Remove NOT_IN_libc

Replace with !IS_IN (libc).  This completes the transition from
the IS_IN/NOT_IN macros to the IN_MODULE macro set.

The generated code is unchanged on x86_64.

	* stdlib/isomac.c (fmt): Replace NOT_IN_libc with IN_MODULE.
	(get_null_defines): Adjust.
	* sunrpc/Makefile: Adjust comment.
	* Makerules (CPPFLAGS-nonlib): Remove NOT_IN_libc.
	* elf/Makefile (CPPFLAGS-sotruss-lib): Likewise.
	(CFLAGS-interp.c): Likewise.
	(CFLAGS-ldconfig.c): Likewise.
	(CPPFLAGS-.os): Likewise.
	* elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
	* extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
	* extra-modules.mk (extra-modules.mk): Likewise.
	* iconv/Makefile (CPPFLAGS-iconvprogs): Likewise.
	* locale/Makefile (CPPFLAGS-locale_programs): Likewise.
	* malloc/Makefile (CPPFLAGS-memusagestat): Likewise.
	* nscd/Makefile (CPPFLAGS-nscd): Likewise.
	* nss/Makefile (CPPFLAGS-nss_test1): Likewise.
	* stdlib/Makefile (CFLAGS-tst-putenvmod.c): Likewise.
	* sysdeps/gnu/Makefile ($(objpfx)errlist-compat.c): Likewise.
	* sysdeps/unix/sysv/linux/Makefile (CPPFLAGS-lddlibc4): Likewise.
	* iconvdata/Makefile (CPPFLAGS): Likewise.
	(cpp-srcs-left): Add libof for all iconvdata routines.
	* bits/stdio-lock.h: Replace NOT_IN_libc with IS_IN.
	* include/assert.h: Likewise.
	* include/ctype.h: Likewise.
	* include/errno.h: Likewise.
	* include/libc-symbols.h: Likewise.
	* include/math.h: Likewise.
	* include/netdb.h: Likewise.
	* include/resolv.h: Likewise.
	* include/stdio.h: Likewise.
	* include/stdlib.h: Likewise.
	* include/string.h: Likewise.
	* include/sys/stat.h: Likewise.
	* include/wctype.h: Likewise.
	* intl/l10nflist.c: Likewise.
	* libidn/idn-stub.c: Likewise.
	* libio/libioP.h: Likewise.
	* nptl/libc_multiple_threads.c: Likewise.
	* nptl/pthreadP.h: Likewise.
	* posix/regex_internal.h: Likewise.
	* resolv/res_hconf.c: Likewise.
	* sysdeps/arm/armv7/multiarch/memcpy.S: Likewise.
	* sysdeps/arm/memmove.S: Likewise.
	* sysdeps/arm/sysdep.h: Likewise.
	* sysdeps/generic/_itoa.h: Likewise.
	* sysdeps/generic/symbol-hacks.h: Likewise.
	* sysdeps/gnu/errlist.awk: Likewise.
	* sysdeps/gnu/errlist.c: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i686/memcpy.S: Likewise.
	* sysdeps/i386/i686/memmove.S: Likewise.
	* sysdeps/i386/i686/mempcpy.S: Likewise.
	* sysdeps/i386/i686/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/bcopy.S: Likewise.
	* sysdeps/i386/i686/multiarch/bzero.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/rawmemchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strnlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp.S: Likewise.
	* sysdeps/ia64/fpu/libm-symbols.h: Likewise.
	* sysdeps/nptl/bits/libc-lock.h: Likewise.
	* sysdeps/nptl/bits/libc-lockP.h: Likewise.
	* sysdeps/nptl/bits/stdio-lock.h: Likewise.
	* sysdeps/posix/closedir.c: Likewise.
	* sysdeps/posix/opendir.c: Likewise.
	* sysdeps/posix/readdir.c: Likewise.
	* sysdeps/posix/rewinddir.c: Likewise.
	* sysdeps/powerpc/novmx-sigjmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power6/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strpbrk.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc64/setjmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memset.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memset.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset.S: Likewise.
	* sysdeps/unix/alpha/sysdep.S: Likewise.
	* sysdeps/unix/alpha/sysdep.h: Likewise.
	* sysdeps/unix/make-syscalls.sh: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/getpid.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/longjmp_chk.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
	* sysdeps/wordsize-32/symbol-hacks.h: Likewise.
	* sysdeps/x86_64/memcpy.S: Likewise.
	* sysdeps/x86_64/memmove.c: Likewise.
	* sysdeps/x86_64/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.h: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove.c: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memset-avx2.S: Likewise.
	* sysdeps/x86_64/multiarch/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/strcspn.S: Likewise.
	* sysdeps/x86_64/multiarch/strspn.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy.S: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp.S: Likewise.
	* sysdeps/x86_64/strcmp.S: Likewise.

282 files changed, 388 insertions, 389 deletions

diff --git a/sysdeps/arm/armv7/multiarch/memcpy.S b/sysdeps/arm/armv7/multiarch/memcpy.S
index c4f4e80fb0..3439cb7a2c 100644
--- a/sysdeps/arm/armv7/multiarch/memcpy.S
+++ b/sysdeps/arm/armv7/multiarch/memcpy.S
@@ -22,7 +22,7 @@
 #include <sysdep.h>
 #include <rtld-global-offsets.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 /* Under __ARM_NEON__, memcpy_neon.S defines the name memcpy.  */
 # ifndef __ARM_NEON__
 	.text
diff --git a/sysdeps/arm/memmove.S b/sysdeps/arm/memmove.S
index 04aa7db7b4..488e1562a3 100644
--- a/sysdeps/arm/memmove.S
+++ b/sysdeps/arm/memmove.S
@@ -69,7 +69,7 @@ ENTRY(memmove)
 
 		subs	ip, r0, r1
 		cmphi	r2, ip
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 		bls	memcpy
 #else
 		bls	HIDDEN_JUMPTARGET(memcpy)
diff --git a/sysdeps/arm/sysdep.h b/sysdeps/arm/sysdep.h
index bc86d5a4e6..62f74eb49e 100644
--- a/sysdeps/arm/sysdep.h
+++ b/sysdeps/arm/sysdep.h
@@ -344,7 +344,7 @@
 
 /* Pointer mangling support.  */
 #if (IS_IN (rtld) || \
-     (!defined SHARED && (!defined NOT_IN_libc || IS_IN (libpthread))))
+     (!defined SHARED && (IS_IN (libc) || IS_IN (libpthread))))
 # ifdef __ASSEMBLER__
 #  define PTR_MANGLE_LOAD(guard, tmp)					\
   LDR_HIDDEN (guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard_local), 0)
diff --git a/sysdeps/generic/_itoa.h b/sysdeps/generic/_itoa.h
index 8360bafe70..ed84e56ae4 100644
--- a/sysdeps/generic/_itoa.h
+++ b/sysdeps/generic/_itoa.h
@@ -46,12 +46,12 @@ extern char *_itoa (unsigned long long int value, char *buflim,
 
 extern const char _itoa_upper_digits[];
 extern const char _itoa_lower_digits[];
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 hidden_proto (_itoa_upper_digits)
 hidden_proto (_itoa_lower_digits)
 #endif
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 extern char *_itoa_word (_ITOA_WORD_TYPE value, char *buflim,
 			 unsigned int base, int upper_case);
 #else
diff --git a/sysdeps/generic/symbol-hacks.h b/sysdeps/generic/symbol-hacks.h
index 6bec24b7a0..ce576c9fd2 100644
--- a/sysdeps/generic/symbol-hacks.h
+++ b/sysdeps/generic/symbol-hacks.h
@@ -1,6 +1,6 @@
 /* Some compiler optimizations may transform loops into memset/memmove
    calls and without proper declaration it may generate PLT calls.  */
-#if !defined __ASSEMBLER__ && !defined NOT_IN_libc && defined SHARED
+#if !defined __ASSEMBLER__ && IS_IN (libc) && defined SHARED
 asm ("memmove = __GI_memmove");
 asm ("memset = __GI_memset");
 asm ("memcpy = __GI_memcpy");
diff --git a/sysdeps/gnu/Makefile b/sysdeps/gnu/Makefile
index b5b2cf0562..ba495ed236 100644
--- a/sysdeps/gnu/Makefile
+++ b/sysdeps/gnu/Makefile
@@ -40,7 +40,7 @@ $(objpfx)errlist-compat.c: $(errlist-c) $(..)sysdeps/gnu/errlist-compat.awk \
 endif
 	$(make-target-directory)
 	$(AWK) -v maxerr=`\
-	  $(CC) -S $(CPPFLAGS) $(CFLAGS) -DNOT_IN_libc -DEMIT_ERR_MAX $< -o - \
+	  $(CC) -S $(CPPFLAGS) $(CFLAGS) -DEMIT_ERR_MAX $< -o - \
 	  | sed -n 's/^.*@@@[^0-9]*\([0-9]*\)[^0-9]*@@@.*$$/\1/p'` \
 	       -f $(..)sysdeps/gnu/errlist-compat.awk \
 	       $(wildcard $(sysdirs:=/Versions)) > $@T
diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk
index 7fa53053ae..6da844a246 100644
--- a/sysdeps/gnu/errlist.awk
+++ b/sysdeps/gnu/errlist.awk
@@ -110,7 +110,7 @@ END {
   print "  (sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0])";
   print "const int _sys_nerr_internal = NERR;"
   print "";
-  print "#if !defined NOT_IN_libc && !defined ERRLIST_NO_COMPAT";
+  print "#if IS_IN (libc) && !defined ERRLIST_NO_COMPAT";
   print "# include <errlist-compat.c>";
   print "#endif";
   print "";
diff --git a/sysdeps/gnu/errlist.c b/sysdeps/gnu/errlist.c
index 8381434c2c..a9a5960503 100644
--- a/sysdeps/gnu/errlist.c
+++ b/sysdeps/gnu/errlist.c
@@ -1480,7 +1480,7 @@ TRANS error; @pxref{Cancel AIO Operations}. */
   (sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0])
 const int _sys_nerr_internal = NERR;
 
-#if !defined NOT_IN_libc && !defined ERRLIST_NO_COMPAT
+#if IS_IN (libc) && !defined ERRLIST_NO_COMPAT
 # include <errlist-compat.c>
 #endif
 
diff --git a/sysdeps/i386/i586/memcpy.S b/sysdeps/i386/i586/memcpy.S
index edd9f08723..6e0cc4c76b 100644
--- a/sysdeps/i386/i586/memcpy.S
+++ b/sysdeps/i386/i586/memcpy.S
@@ -32,7 +32,7 @@
 #define LEN	SRC+4
 
         .text
-#if defined PIC && !defined NOT_IN_libc
+#if defined PIC && IS_IN (libc)
 ENTRY (__memcpy_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S
index 910d7bbb99..50b498b6ab 100644
--- a/sysdeps/i386/i586/memset.S
+++ b/sysdeps/i386/i586/memset.S
@@ -35,7 +35,7 @@
 #endif
 
         .text
-#if defined PIC && !defined NOT_IN_libc && !BZERO_P
+#if defined PIC && IS_IN (libc) && !BZERO_P
 ENTRY (__memset_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/memcpy.S b/sysdeps/i386/i686/memcpy.S
index 17e815e901..6a150048c6 100644
--- a/sysdeps/i386/i686/memcpy.S
+++ b/sysdeps/i386/i686/memcpy.S
@@ -28,7 +28,7 @@
 #define LEN	SRC+4
 
 	.text
-#if defined PIC && !defined NOT_IN_libc
+#if defined PIC && IS_IN (libc)
 ENTRY_CHK (__memcpy_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/memmove.S b/sysdeps/i386/i686/memmove.S
index 4b8785f22c..561f2fc837 100644
--- a/sysdeps/i386/i686/memmove.S
+++ b/sysdeps/i386/i686/memmove.S
@@ -35,7 +35,7 @@
 # define SRC	DEST+4
 # define LEN	SRC+4
 
-# if defined PIC && !defined NOT_IN_libc
+# if defined PIC && IS_IN (libc)
 ENTRY_CHK (__memmove_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/mempcpy.S b/sysdeps/i386/i686/mempcpy.S
index ec4b42b8d7..8e51a1390b 100644
--- a/sysdeps/i386/i686/mempcpy.S
+++ b/sysdeps/i386/i686/mempcpy.S
@@ -28,7 +28,7 @@
 #define LEN	SRC+4
 
 	.text
-#if defined PIC && !defined NOT_IN_libc
+#if defined PIC && IS_IN (libc)
 ENTRY_CHK (__mempcpy_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
index 72d21fa92d..877bdda290 100644
--- a/sysdeps/i386/i686/memset.S
+++ b/sysdeps/i386/i686/memset.S
@@ -36,7 +36,7 @@
 #endif
 
         .text
-#if defined PIC && !defined NOT_IN_libc && !BZERO_P
+#if defined PIC && IS_IN (libc) && !BZERO_P
 ENTRY_CHK (__memset_chk)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
@@ -99,7 +99,7 @@ ENTRY (memset)
 END (memset)
 libc_hidden_builtin_def (memset)
 
-#if defined PIC && !defined NOT_IN_libc && !BZERO_P
+#if defined PIC && IS_IN (libc) && !BZERO_P
 strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
 	.section .gnu.warning.__memset_zero_constant_len_parameter
 	.string "memset used with constant zero length parameter; this could be due to transposed parameters"
diff --git a/sysdeps/i386/i686/multiarch/bcopy.S b/sysdeps/i386/i686/multiarch/bcopy.S
index 4f50035d0a..a0fca885ee 100644
--- a/sysdeps/i386/i686/multiarch/bcopy.S
+++ b/sysdeps/i386/i686/multiarch/bcopy.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(bcopy)
diff --git a/sysdeps/i386/i686/multiarch/bzero.S b/sysdeps/i386/i686/multiarch/bzero.S
index cd59940f9c..2dc1d8a436 100644
--- a/sysdeps/i386/i686/multiarch/bzero.S
+++ b/sysdeps/i386/i686/multiarch/bzero.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__bzero)
diff --git a/sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S b/sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S
index 8f5ccca195..a0083a325c 100644
--- a/sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S
+++ b/sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/memchr-sse2.S b/sysdeps/i386/i686/multiarch/memchr-sse2.S
index 8d2c159cea..59a8a7caae 100644
--- a/sysdeps/i386/i686/multiarch/memchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/memchr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/memchr.S b/sysdeps/i386/i686/multiarch/memchr.S
index 1bdf0e7968..b2a22f384d 100644
--- a/sysdeps/i386/i686/multiarch/memchr.S
+++ b/sysdeps/i386/i686/multiarch/memchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 # define CFI_POP(REG) \
 	cfi_adjust_cfa_offset (-4); \
 	cfi_restore (REG)
diff --git a/sysdeps/i386/i686/multiarch/memcmp-sse4.S b/sysdeps/i386/i686/multiarch/memcmp-sse4.S
index a23861556a..570fec0424 100644
--- a/sysdeps/i386/i686/multiarch/memcmp-sse4.S
+++ b/sysdeps/i386/i686/multiarch/memcmp-sse4.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/memcmp-ssse3.S b/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
index 4a0bd6727a..546342892a 100644
--- a/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/memcmp-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/memcmp.S b/sysdeps/i386/i686/multiarch/memcmp.S
index e4d56fa28f..1c5e30c0fc 100644
--- a/sysdeps/i386/i686/multiarch/memcmp.S
+++ b/sysdeps/i386/i686/multiarch/memcmp.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(memcmp)
diff --git a/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S b/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
index c4cdcfdbe3..a7a8f982fc 100644
--- a/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
+++ b/sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S
@@ -19,7 +19,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc \
+#if IS_IN (libc) \
     && (defined SHARED \
 	|| defined USE_AS_MEMMOVE \
 	|| !defined USE_MULTIARCH)
diff --git a/sysdeps/i386/i686/multiarch/memcpy-ssse3.S b/sysdeps/i386/i686/multiarch/memcpy-ssse3.S
index c0d718b8aa..d190ba02e8 100644
--- a/sysdeps/i386/i686/multiarch/memcpy-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/memcpy-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if !defined NOT_IN_libc \
+#if IS_IN (libc) \
     && (defined SHARED \
 	|| defined USE_AS_MEMMOVE \
 	|| !defined USE_MULTIARCH)
diff --git a/sysdeps/i386/i686/multiarch/memcpy.S b/sysdeps/i386/i686/multiarch/memcpy.S
index f583482bd7..76195a52eb 100644
--- a/sysdeps/i386/i686/multiarch/memcpy.S
+++ b/sysdeps/i386/i686/multiarch/memcpy.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need memcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 	.text
 ENTRY(memcpy)
 	.type	memcpy, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/memcpy_chk.S b/sysdeps/i386/i686/multiarch/memcpy_chk.S
index bf93b68fa4..c67968ea6c 100644
--- a/sysdeps/i386/i686/multiarch/memcpy_chk.S
+++ b/sysdeps/i386/i686/multiarch/memcpy_chk.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  There are no multiarch memcpy functions for static binaries.
  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__memcpy_chk)
diff --git a/sysdeps/i386/i686/multiarch/memmove.S b/sysdeps/i386/i686/multiarch/memmove.S
index 90cf16770f..d8de7c6894 100644
--- a/sysdeps/i386/i686/multiarch/memmove.S
+++ b/sysdeps/i386/i686/multiarch/memmove.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(memmove)
diff --git a/sysdeps/i386/i686/multiarch/memmove_chk.S b/sysdeps/i386/i686/multiarch/memmove_chk.S
index 182aeb3d46..3442ce15f1 100644
--- a/sysdeps/i386/i686/multiarch/memmove_chk.S
+++ b/sysdeps/i386/i686/multiarch/memmove_chk.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__memmove_chk)
diff --git a/sysdeps/i386/i686/multiarch/mempcpy.S b/sysdeps/i386/i686/multiarch/mempcpy.S
index 56b50bb2fc..3aab63d172 100644
--- a/sysdeps/i386/i686/multiarch/mempcpy.S
+++ b/sysdeps/i386/i686/multiarch/mempcpy.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need mempcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 	.text
 ENTRY(__mempcpy)
 	.type	__mempcpy, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/mempcpy_chk.S b/sysdeps/i386/i686/multiarch/mempcpy_chk.S
index a76341c0e3..5d81f4ee2d 100644
--- a/sysdeps/i386/i686/multiarch/mempcpy_chk.S
+++ b/sysdeps/i386/i686/multiarch/mempcpy_chk.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  There are no multiarch mempcpy functions for static binaries.
  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__mempcpy_chk)
diff --git a/sysdeps/i386/i686/multiarch/memrchr-c.c b/sysdeps/i386/i686/multiarch/memrchr-c.c
index 44ec1a6ed9..ef7bbbe792 100644
--- a/sysdeps/i386/i686/multiarch/memrchr-c.c
+++ b/sysdeps/i386/i686/multiarch/memrchr-c.c
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define MEMRCHR  __memrchr_ia32
 # include <string.h>
 extern void *__memrchr_ia32 (const void *, int, size_t);
diff --git a/sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S b/sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S
index 303ef9dd62..bc6277508c 100644
--- a/sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S
+++ b/sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/memrchr-sse2.S b/sysdeps/i386/i686/multiarch/memrchr-sse2.S
index 90ba738498..ef605d1c28 100644
--- a/sysdeps/i386/i686/multiarch/memrchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/memrchr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 # define CFI_PUSH(REG)	\
diff --git a/sysdeps/i386/i686/multiarch/memrchr.S b/sysdeps/i386/i686/multiarch/memrchr.S
index 0dff8b6e80..5ffcc2623c 100644
--- a/sysdeps/i386/i686/multiarch/memrchr.S
+++ b/sysdeps/i386/i686/multiarch/memrchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 # define CFI_POP(REG) \
 	cfi_adjust_cfa_offset (-4); \
 	cfi_restore (REG)
diff --git a/sysdeps/i386/i686/multiarch/memset-sse2-rep.S b/sysdeps/i386/i686/multiarch/memset-sse2-rep.S
index 8655a8c5b4..2a064a1ad0 100644
--- a/sysdeps/i386/i686/multiarch/memset-sse2-rep.S
+++ b/sysdeps/i386/i686/multiarch/memset-sse2-rep.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #include <sysdep.h>
 #include "asm-syntax.h"
@@ -79,7 +79,7 @@
 #endif
 
 	.section .text.sse2,"ax",@progbits
-#if defined SHARED && !defined NOT_IN_libc && !defined USE_AS_BZERO
+#if defined SHARED && IS_IN (libc) && !defined USE_AS_BZERO
 ENTRY (__memset_chk_sse2_rep)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/multiarch/memset-sse2.S b/sysdeps/i386/i686/multiarch/memset-sse2.S
index cd94e4e7b9..a48f9fae1b 100644
--- a/sysdeps/i386/i686/multiarch/memset-sse2.S
+++ b/sysdeps/i386/i686/multiarch/memset-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #include <sysdep.h>
 #include "asm-syntax.h"
@@ -79,7 +79,7 @@
 #endif
 
 	.section .text.sse2,"ax",@progbits
-#if defined SHARED && !defined NOT_IN_libc && !defined USE_AS_BZERO
+#if defined SHARED && IS_IN (libc) && !defined USE_AS_BZERO
 ENTRY (__memset_chk_sse2)
 	movl	12(%esp), %eax
 	cmpl	%eax, 16(%esp)
diff --git a/sysdeps/i386/i686/multiarch/memset.S b/sysdeps/i386/i686/multiarch/memset.S
index ecec1ead46..c818002cdc 100644
--- a/sysdeps/i386/i686/multiarch/memset.S
+++ b/sysdeps/i386/i686/multiarch/memset.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(memset)
diff --git a/sysdeps/i386/i686/multiarch/memset_chk.S b/sysdeps/i386/i686/multiarch/memset_chk.S
index 92c6099590..f9805206c7 100644
--- a/sysdeps/i386/i686/multiarch/memset_chk.S
+++ b/sysdeps/i386/i686/multiarch/memset_chk.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__memset_chk)
diff --git a/sysdeps/i386/i686/multiarch/rawmemchr.S b/sysdeps/i386/i686/multiarch/rawmemchr.S
index 01850cf904..db4d461054 100644
--- a/sysdeps/i386/i686/multiarch/rawmemchr.S
+++ b/sysdeps/i386/i686/multiarch/rawmemchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 # define CFI_POP(REG) \
 	cfi_adjust_cfa_offset (-4); \
 	cfi_restore (REG)
diff --git a/sysdeps/i386/i686/multiarch/strcat-sse2.S b/sysdeps/i386/i686/multiarch/strcat-sse2.S
index efd3f67a39..ae82e9a9f7 100644
--- a/sysdeps/i386/i686/multiarch/strcat-sse2.S
+++ b/sysdeps/i386/i686/multiarch/strcat-sse2.S
@@ -18,7 +18,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strcat-ssse3.S b/sysdeps/i386/i686/multiarch/strcat-ssse3.S
index 8527166f75..0c506c1a68 100644
--- a/sysdeps/i386/i686/multiarch/strcat-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/strcat-ssse3.S
@@ -18,7 +18,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strcat.S b/sysdeps/i386/i686/multiarch/strcat.S
index 598c3f0a58..267ad13ef2 100644
--- a/sysdeps/i386/i686/multiarch/strcat.S
+++ b/sysdeps/i386/i686/multiarch/strcat.S
@@ -43,7 +43,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strncat in static library since we
    need strncat before the initialization happened.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # ifdef SHARED
 	.text
diff --git a/sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S b/sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S
index 3357f53f56..9ab6c82400 100644
--- a/sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S
+++ b/sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strchr-sse2.S b/sysdeps/i386/i686/multiarch/strchr-sse2.S
index e0f3a2edf4..37867afeb6 100644
--- a/sysdeps/i386/i686/multiarch/strchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/strchr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strchr.S b/sysdeps/i386/i686/multiarch/strchr.S
index 0fc4d8c293..cc0ab9d146 100644
--- a/sysdeps/i386/i686/multiarch/strchr.S
+++ b/sysdeps/i386/i686/multiarch/strchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(strchr)
 	.type	strchr, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/strcmp-sse4.S b/sysdeps/i386/i686/multiarch/strcmp-sse4.S
index 42d308a923..ad15aa8e0f 100644
--- a/sysdeps/i386/i686/multiarch/strcmp-sse4.S
+++ b/sysdeps/i386/i686/multiarch/strcmp-sse4.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #include <sysdep.h>
 #include "asm-syntax.h"
diff --git a/sysdeps/i386/i686/multiarch/strcmp-ssse3.S b/sysdeps/i386/i686/multiarch/strcmp-ssse3.S
index c3107e50ef..1b32a8dfe3 100644
--- a/sysdeps/i386/i686/multiarch/strcmp-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/strcmp-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #include <sysdep.h>
 #include "asm-syntax.h"
diff --git a/sysdeps/i386/i686/multiarch/strcmp.S b/sysdeps/i386/i686/multiarch/strcmp.S
index 23cbd6f3c5..536e87e7c8 100644
--- a/sysdeps/i386/i686/multiarch/strcmp.S
+++ b/sysdeps/i386/i686/multiarch/strcmp.S
@@ -50,7 +50,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strncmp in static library since we
    need strncmp before the initialization happened.  */
-#if (defined SHARED || !defined USE_AS_STRNCMP) && !defined NOT_IN_libc
+#if (defined SHARED || !defined USE_AS_STRNCMP) && IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(STRCMP)
diff --git a/sysdeps/i386/i686/multiarch/strcpy-sse2.S b/sysdeps/i386/i686/multiarch/strcpy-sse2.S
index cbe040caf8..640fd06422 100644
--- a/sysdeps/i386/i686/multiarch/strcpy-sse2.S
+++ b/sysdeps/i386/i686/multiarch/strcpy-sse2.S
@@ -18,7 +18,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strcpy-ssse3.S b/sysdeps/i386/i686/multiarch/strcpy-ssse3.S
index 2d67994816..ad3f7faa99 100644
--- a/sysdeps/i386/i686/multiarch/strcpy-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/strcpy-ssse3.S
@@ -18,7 +18,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # ifndef USE_AS_STRCAT
 #  include <sysdep.h>
diff --git a/sysdeps/i386/i686/multiarch/strcpy.S b/sysdeps/i386/i686/multiarch/strcpy.S
index f44ddf7ec4..54e5b24fe7 100644
--- a/sysdeps/i386/i686/multiarch/strcpy.S
+++ b/sysdeps/i386/i686/multiarch/strcpy.S
@@ -59,7 +59,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strncpy in static library since we
    need strncpy before the initialization happened.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # ifdef SHARED
 	.text
diff --git a/sysdeps/i386/i686/multiarch/strcspn.S b/sysdeps/i386/i686/multiarch/strcspn.S
index c35f4bfc3b..d60874be24 100644
--- a/sysdeps/i386/i686/multiarch/strcspn.S
+++ b/sysdeps/i386/i686/multiarch/strcspn.S
@@ -41,7 +41,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strpbrk in static library since we
    need strpbrk before the initialization happened.  */
-#if (defined SHARED || !defined USE_AS_STRPBRK) && !defined NOT_IN_libc
+#if (defined SHARED || !defined USE_AS_STRPBRK) && IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(STRCSPN)
diff --git a/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S b/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S
index 8f9b149de0..76179464b0 100644
--- a/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S
+++ b/sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 
 #include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strlen-sse2.S b/sysdeps/i386/i686/multiarch/strlen-sse2.S
index 20e82a6104..b2f8973546 100644
--- a/sysdeps/i386/i686/multiarch/strlen-sse2.S
+++ b/sysdeps/i386/i686/multiarch/strlen-sse2.S
@@ -19,7 +19,7 @@
 
 /* for strlen only SHARED version is optimized, for strcat, strncat, strnlen both STATIC and SHARED are optimized */
 
-#if (defined USE_AS_STRNLEN || defined USE_AS_STRCAT || defined SHARED) && !defined NOT_IN_libc
+#if (defined USE_AS_STRNLEN || defined USE_AS_STRCAT || defined SHARED) && IS_IN (libc)
 
 # ifndef USE_AS_STRCAT
 
diff --git a/sysdeps/i386/i686/multiarch/strlen.S b/sysdeps/i386/i686/multiarch/strlen.S
index 5b262a2ef2..6d4eb68a73 100644
--- a/sysdeps/i386/i686/multiarch/strlen.S
+++ b/sysdeps/i386/i686/multiarch/strlen.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in libc and for the
    DSO.  In static binaries, we need strlen before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 	.text
 ENTRY(strlen)
 	.type	strlen, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/strnlen.S b/sysdeps/i386/i686/multiarch/strnlen.S
index 63357d7267..73854d5d8f 100644
--- a/sysdeps/i386/i686/multiarch/strnlen.S
+++ b/sysdeps/i386/i686/multiarch/strnlen.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(__strnlen)
 	.type	__strnlen, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S b/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S
index 622b9f2fe6..09724b5da3 100644
--- a/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S
+++ b/sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strrchr-sse2.S b/sysdeps/i386/i686/multiarch/strrchr-sse2.S
index 1644d5d080..6cfb9a333e 100644
--- a/sysdeps/i386/i686/multiarch/strrchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/strrchr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/strrchr.S b/sysdeps/i386/i686/multiarch/strrchr.S
index 323f3f49ca..24c049336c 100644
--- a/sysdeps/i386/i686/multiarch/strrchr.S
+++ b/sysdeps/i386/i686/multiarch/strrchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(strrchr)
 	.type	strrchr, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/strspn.S b/sysdeps/i386/i686/multiarch/strspn.S
index 703fc174b0..e55e224be1 100644
--- a/sysdeps/i386/i686/multiarch/strspn.S
+++ b/sysdeps/i386/i686/multiarch/strspn.S
@@ -26,7 +26,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(strspn)
diff --git a/sysdeps/i386/i686/multiarch/wcschr-c.c b/sysdeps/i386/i686/multiarch/wcschr-c.c
index c23af26201..4c5f0f6b25 100644
--- a/sysdeps/i386/i686/multiarch/wcschr-c.c
+++ b/sysdeps/i386/i686/multiarch/wcschr-c.c
@@ -1,6 +1,6 @@
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 #  undef libc_hidden_def
 #  define libc_hidden_def(name) \
diff --git a/sysdeps/i386/i686/multiarch/wcschr-sse2.S b/sysdeps/i386/i686/multiarch/wcschr-sse2.S
index 332bdb00be..f0294bcda2 100644
--- a/sysdeps/i386/i686/multiarch/wcschr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/wcschr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <sysdep.h>
 
 # define CFI_PUSH(REG)	\
diff --git a/sysdeps/i386/i686/multiarch/wcschr.S b/sysdeps/i386/i686/multiarch/wcschr.S
index 7622085984..9a80a33618 100644
--- a/sysdeps/i386/i686/multiarch/wcschr.S
+++ b/sysdeps/i386/i686/multiarch/wcschr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wcschr)
 	.type	wcschr, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/wcscmp-sse2.S b/sysdeps/i386/i686/multiarch/wcscmp-sse2.S
index 926bdcf876..6e273d2930 100644
--- a/sysdeps/i386/i686/multiarch/wcscmp-sse2.S
+++ b/sysdeps/i386/i686/multiarch/wcscmp-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/i386/i686/multiarch/wcscmp.S b/sysdeps/i386/i686/multiarch/wcscmp.S
index 37dd07fa9e..ed36d6b58e 100644
--- a/sysdeps/i386/i686/multiarch/wcscmp.S
+++ b/sysdeps/i386/i686/multiarch/wcscmp.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in libc and for the
    DSO.  In static binaries, we need wcscmp before the initialization
    happened.  */
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wcscmp)
 	.type	wcscmp, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/wcscpy-c.c b/sysdeps/i386/i686/multiarch/wcscpy-c.c
index a3c4024c01..fb3000392b 100644
--- a/sysdeps/i386/i686/multiarch/wcscpy-c.c
+++ b/sysdeps/i386/i686/multiarch/wcscpy-c.c
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define wcscpy  __wcscpy_ia32
 #endif
 
diff --git a/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S b/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
index f404252a61..8b2f910be8 100644
--- a/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
+++ b/sysdeps/i386/i686/multiarch/wcscpy-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <sysdep.h>
 
 # define CFI_PUSH(REG)	\
diff --git a/sysdeps/i386/i686/multiarch/wcscpy.S b/sysdeps/i386/i686/multiarch/wcscpy.S
index 54a432599f..b87500c9bb 100644
--- a/sysdeps/i386/i686/multiarch/wcscpy.S
+++ b/sysdeps/i386/i686/multiarch/wcscpy.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wcscpy)
 	.type	wcscpy, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/wcslen-c.c b/sysdeps/i386/i686/multiarch/wcslen-c.c
index 8cebfea0e4..a335dc0f7e 100644
--- a/sysdeps/i386/i686/multiarch/wcslen-c.c
+++ b/sysdeps/i386/i686/multiarch/wcslen-c.c
@@ -1,6 +1,6 @@
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define WCSLEN  __wcslen_ia32
 #endif
 
diff --git a/sysdeps/i386/i686/multiarch/wcslen-sse2.S b/sysdeps/i386/i686/multiarch/wcslen-sse2.S
index 8e94545c04..70b73b4825 100644
--- a/sysdeps/i386/i686/multiarch/wcslen-sse2.S
+++ b/sysdeps/i386/i686/multiarch/wcslen-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <sysdep.h>
 # define STR	4
 
diff --git a/sysdeps/i386/i686/multiarch/wcslen.S b/sysdeps/i386/i686/multiarch/wcslen.S
index ba97cc49d6..d42a419481 100644
--- a/sysdeps/i386/i686/multiarch/wcslen.S
+++ b/sysdeps/i386/i686/multiarch/wcslen.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(__wcslen)
 	.type	__wcslen, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/wcsrchr-c.c b/sysdeps/i386/i686/multiarch/wcsrchr-c.c
index c7444ce89b..8d8a335b5b 100644
--- a/sysdeps/i386/i686/multiarch/wcsrchr-c.c
+++ b/sysdeps/i386/i686/multiarch/wcsrchr-c.c
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define wcsrchr  __wcsrchr_ia32
 #endif
 
diff --git a/sysdeps/i386/i686/multiarch/wcsrchr-sse2.S b/sysdeps/i386/i686/multiarch/wcsrchr-sse2.S
index f6abd6b192..0e1b291c19 100644
--- a/sysdeps/i386/i686/multiarch/wcsrchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/wcsrchr-sse2.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <sysdep.h>
 # define CFI_PUSH(REG)	\
 	cfi_adjust_cfa_offset (4);	\
diff --git a/sysdeps/i386/i686/multiarch/wcsrchr.S b/sysdeps/i386/i686/multiarch/wcsrchr.S
index 4d80b54f2e..3ab1735059 100644
--- a/sysdeps/i386/i686/multiarch/wcsrchr.S
+++ b/sysdeps/i386/i686/multiarch/wcsrchr.S
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 #include <init-arch.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wcsrchr)
 	.type	wcsrchr, @gnu_indirect_function
diff --git a/sysdeps/i386/i686/multiarch/wmemcmp-c.c b/sysdeps/i386/i686/multiarch/wmemcmp-c.c
index bd37660fcb..75ab4b94c1 100644
--- a/sysdeps/i386/i686/multiarch/wmemcmp-c.c
+++ b/sysdeps/i386/i686/multiarch/wmemcmp-c.c
@@ -1,6 +1,6 @@
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define WMEMCMP  __wmemcmp_ia32
 #endif
 
diff --git a/sysdeps/i386/i686/multiarch/wmemcmp.S b/sysdeps/i386/i686/multiarch/wmemcmp.S
index 1b5a211982..6790fa448f 100644
--- a/sysdeps/i386/i686/multiarch/wmemcmp.S
+++ b/sysdeps/i386/i686/multiarch/wmemcmp.S
@@ -23,7 +23,7 @@
 
 /* Define multiple versions only for the definition in libc. */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wmemcmp)
 	.type	wmemcmp, @gnu_indirect_function
diff --git a/sysdeps/ia64/fpu/libm-symbols.h b/sysdeps/ia64/fpu/libm-symbols.h
index 0df807601c..3cbc6c41b0 100644
--- a/sysdeps/ia64/fpu/libm-symbols.h
+++ b/sysdeps/ia64/fpu/libm-symbols.h
@@ -53,6 +53,6 @@
  ASM_SIZE_DIRECTIVE(__ieee754_##name);			\
  .type __ieee754_##name, @function
 
-#if defined ASSEMBLER && !defined NOT_IN_libc
+#if defined ASSEMBLER && IS_IN (libc)
 # define __libm_error_support	HIDDEN_JUMPTARGET(__libm_error_support)
 #endif
diff --git a/sysdeps/nptl/bits/libc-lock.h b/sysdeps/nptl/bits/libc-lock.h
index 2acc6bfcd0..d9a82ad962 100644
--- a/sysdeps/nptl/bits/libc-lock.h
+++ b/sysdeps/nptl/bits/libc-lock.h
@@ -26,7 +26,7 @@
 
 /* Mutex type.  */
 #if defined _LIBC || defined _IO_MTSAFE_IO
-# if (defined NOT_IN_libc && !IS_IN (libpthread)) || !defined _LIBC
+# if (!IS_IN (libc) && !IS_IN (libpthread)) || !defined _LIBC
 typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
 # else
 typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t;
@@ -47,7 +47,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 
 /* Define an initialized recursive lock variable NAME with storage
    class CLASS.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 # define __libc_lock_define_initialized_recursive(CLASS, NAME) \
   CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
 # define _LIBC_LOCK_RECURSIVE_INITIALIZER \
@@ -60,7 +60,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Initialize a recursive mutex.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 # define __libc_lock_init_recursive(NAME) \
   ((void) ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER))
 #else
@@ -78,7 +78,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Finalize recursive named lock.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 # define __libc_lock_fini_recursive(NAME) ((void) 0)
 #else
 # define __libc_lock_fini_recursive(NAME) \
@@ -86,7 +86,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Lock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 # define __libc_lock_lock_recursive(NAME) \
   do {									      \
     void *self = THREAD_SELF;						      \
@@ -103,7 +103,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Try to lock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 # define __libc_lock_trylock_recursive(NAME) \
   ({									      \
     int result = 0;							      \
@@ -128,7 +128,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Unlock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
+#if defined _LIBC && (IS_IN (libc) || IS_IN (libpthread))
 /* We do no error checking here.  */
 # define __libc_lock_unlock_recursive(NAME) \
   do {									      \
diff --git a/sysdeps/nptl/bits/libc-lockP.h b/sysdeps/nptl/bits/libc-lockP.h
index ae17507c99..78c545382b 100644
--- a/sysdeps/nptl/bits/libc-lockP.h
+++ b/sysdeps/nptl/bits/libc-lockP.h
@@ -35,7 +35,7 @@
 #include <pthread-functions.h>
 
 /* Mutex type.  */
-#if defined NOT_IN_libc && !IS_IN (libpthread)
+#if !IS_IN (libc) && !IS_IN (libpthread)
 typedef pthread_mutex_t __libc_lock_t;
 #else
 typedef int __libc_lock_t;
@@ -69,7 +69,7 @@ typedef pthread_key_t __libc_key_t;
    initialized locks must be set to one due to the lack of normal
    atomic operations.) */
 
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # if LLL_LOCK_INITIALIZER == 0
 #  define __libc_lock_define_initialized(CLASS,NAME) \
   CLASS __libc_lock_t NAME;
@@ -108,7 +108,7 @@ typedef pthread_key_t __libc_key_t;
 #endif
 
 /* Call thread functions through the function pointer table.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # define PTFAVAIL(NAME) __libc_pthread_functions_init
 # define __libc_ptf_call(FUNC, ARGS, ELSE) \
   (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE)
@@ -125,14 +125,14 @@ typedef pthread_key_t __libc_key_t;
 
 /* Initialize the named lock variable, leaving it in a consistent, unlocked
    state.  */
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # define __libc_lock_init(NAME) \
   ((void) ((NAME) = LLL_LOCK_INITIALIZER))
 #else
 # define __libc_lock_init(NAME) \
   __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0)
 #endif
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER) is inefficient.  */
 # define __libc_rwlock_init(NAME) \
   ((void) __builtin_memset (&(NAME), '\0', sizeof (NAME)))
@@ -144,13 +144,13 @@ typedef pthread_key_t __libc_key_t;
 /* Finalize the named lock variable, which must be locked.  It cannot be
    used again until __libc_lock_init is called again on it.  This must be
    called on a lock variable before the containing storage is reused.  */
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # define __libc_lock_fini(NAME) ((void) 0)
 #else
 # define __libc_lock_fini(NAME) \
   __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)
 #endif
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # define __libc_rwlock_fini(NAME) ((void) 0)
 #else
 # define __libc_rwlock_fini(NAME) \
@@ -158,7 +158,7 @@ typedef pthread_key_t __libc_key_t;
 #endif
 
 /* Lock the named lock variable.  */
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # ifndef __libc_lock_lock
 #  define __libc_lock_lock(NAME) \
   ({ lll_lock (NAME, LLL_PRIVATE); 0; })
@@ -174,7 +174,7 @@ typedef pthread_key_t __libc_key_t;
   __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0)
 
 /* Try to lock the named lock variable.  */
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # ifndef __libc_lock_trylock
 #  define __libc_lock_trylock(NAME) \
   lll_trylock (NAME)
@@ -193,7 +193,7 @@ typedef pthread_key_t __libc_key_t;
   __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0)
 
 /* Unlock the named lock variable.  */
-#if !defined NOT_IN_libc || IS_IN (libpthread)
+#if IS_IN (libc) || IS_IN (libpthread)
 # define __libc_lock_unlock(NAME) \
   lll_unlock (NAME, LLL_PRIVATE)
 #else
diff --git a/sysdeps/nptl/bits/stdio-lock.h b/sysdeps/nptl/bits/stdio-lock.h
index 269df5e55e..848f417673 100644
--- a/sysdeps/nptl/bits/stdio-lock.h
+++ b/sysdeps/nptl/bits/stdio-lock.h
@@ -84,7 +84,7 @@ typedef struct { int lock; int cnt; void *owner; } _IO_lock_t;
 #define _IO_cleanup_region_end(_doit) \
   __libc_cleanup_region_end (_doit)
 
-#if defined _LIBC && !defined NOT_IN_libc
+#if defined _LIBC && IS_IN (libc)
 
 # ifdef __EXCEPTIONS
 #  define _IO_acquire_lock(_fp) \
diff --git a/sysdeps/posix/closedir.c b/sysdeps/posix/closedir.c
index 24ba1a5c42..0b57a0dff1 100644
--- a/sysdeps/posix/closedir.c
+++ b/sysdeps/posix/closedir.c
@@ -43,7 +43,7 @@ __closedir (DIR *dirp)
 
   fd = dirp->fd;
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_fini (dirp->lock);
 #endif
 
diff --git a/sysdeps/posix/opendir.c b/sysdeps/posix/opendir.c
index be234bda8c..1ae5c0dafb 100644
--- a/sysdeps/posix/opendir.c
+++ b/sysdeps/posix/opendir.c
@@ -224,7 +224,7 @@ __alloc_dir (int fd, bool close_fd, int flags, const struct stat64 *statp)
     }
 
   dirp->fd = fd;
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_init (dirp->lock);
 #endif
   dirp->allocation = allocation;
diff --git a/sysdeps/posix/readdir.c b/sysdeps/posix/readdir.c
index 7bb956a916..84d7f6ac85 100644
--- a/sysdeps/posix/readdir.c
+++ b/sysdeps/posix/readdir.c
@@ -40,7 +40,7 @@ __READDIR (DIR *dirp)
   DIRENT_TYPE *dp;
   int saved_errno = errno;
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_lock (dirp->lock);
 #endif
 
@@ -110,7 +110,7 @@ __READDIR (DIR *dirp)
       /* Skip deleted files.  */
     } while (dp->d_ino == 0);
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_unlock (dirp->lock);
 #endif
 
diff --git a/sysdeps/posix/rewinddir.c b/sysdeps/posix/rewinddir.c
index e9bc78d073..d1d46716ef 100644
--- a/sysdeps/posix/rewinddir.c
+++ b/sysdeps/posix/rewinddir.c
@@ -26,7 +26,7 @@ void
 __rewinddir (dirp)
      DIR *dirp;
 {
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_lock (dirp->lock);
 #endif
   (void) __lseek (dirp->fd, (off_t) 0, SEEK_SET);
@@ -34,7 +34,7 @@ __rewinddir (dirp)
   dirp->offset = 0;
   dirp->size = 0;
   dirp->errcode = 0;
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
   __libc_lock_unlock (dirp->lock);
 #endif
 }
diff --git a/sysdeps/powerpc/novmx-sigjmp.c b/sysdeps/powerpc/novmx-sigjmp.c
index c651f4231f..1f370bf476 100644
--- a/sysdeps/powerpc/novmx-sigjmp.c
+++ b/sysdeps/powerpc/novmx-sigjmp.c
@@ -20,7 +20,7 @@
 
 #include <bits/wordsize.h>
 #include <shlib-compat.h>
-#if !defined NOT_IN_libc && defined SHARED
+#if IS_IN (libc) && defined SHARED
 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
 #  include <stddef.h>
 #  include <novmxsetjmp.h>
@@ -41,4 +41,4 @@ __novmx__sigjmp_save (__novmx__sigjmp_buf env, int savemask)
 }
 
 # endif /* SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4) */
-#endif /* !NOT_IN_libc && SHARED  */
+#endif /* IS_IN (libc) && SHARED  */
diff --git a/sysdeps/powerpc/powerpc32/__longjmp.S b/sysdeps/powerpc/powerpc32/__longjmp.S
index 3371176112..9a83369f1e 100644
--- a/sysdeps/powerpc/powerpc32/__longjmp.S
+++ b/sysdeps/powerpc/powerpc32/__longjmp.S
@@ -19,12 +19,12 @@
 #include <libc-symbols.h>
 #include <shlib-compat.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # define __longjmp_symbol __longjmp
 # include "__longjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 strong_alias (__vmx__longjmp, __longjmp);
 # define __longjmp_symbol  __vmx__longjmp
 # include "__longjmp-common.S"
@@ -36,4 +36,4 @@ strong_alias (__vmx__longjmp, __longjmp);
 #  define __longjmp_symbol  __novmx__longjmp
 #  include "__longjmp-common.S"
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc32/bsd-_setjmp.S b/sysdeps/powerpc/powerpc32/bsd-_setjmp.S
index 71b6c71b5d..b9521701cc 100644
--- a/sysdeps/powerpc/powerpc32/bsd-_setjmp.S
+++ b/sysdeps/powerpc/powerpc32/bsd-_setjmp.S
@@ -19,7 +19,7 @@
 #include <libc-symbols.h>
 #include <sysdep.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 ENTRY (_setjmp)
 	li r4,0			/* Set second argument to 0.  */
@@ -53,4 +53,4 @@ ENTRY (__vmx_setjmp)
 	b __vmx__sigsetjmp@local
 END (__vmx_setjmp)
 libc_hidden_def (__vmx_setjmp)
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc32/fpu/__longjmp.S b/sysdeps/powerpc/powerpc32/fpu/__longjmp.S
index 08bdd54f75..e68eb73fd3 100644
--- a/sysdeps/powerpc/powerpc32/fpu/__longjmp.S
+++ b/sysdeps/powerpc/powerpc32/fpu/__longjmp.S
@@ -20,12 +20,12 @@
 #include <rtld-global-offsets.h>
 #include <shlib-compat.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # define __longjmp_symbol __longjmp
 # include "__longjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 /* Build a versioned object for libc.  */
 versioned_symbol (libc, __vmx__longjmp, __longjmp, GLIBC_2_3_4);
 # define __longjmp_symbol  __vmx__longjmp
@@ -39,4 +39,4 @@ compat_symbol (libc, __novmx__longjmp, __longjmp, GLIBC_2_0);
 #  define __longjmp_symbol  __novmx__longjmp
 #  include "__longjmp-common.S"
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc32/fpu/setjmp.S b/sysdeps/powerpc/powerpc32/fpu/setjmp.S
index 333f707dad..169704f11a 100644
--- a/sysdeps/powerpc/powerpc32/fpu/setjmp.S
+++ b/sysdeps/powerpc/powerpc32/fpu/setjmp.S
@@ -20,13 +20,13 @@
 #include <rtld-global-offsets.h>
 #include <shlib-compat.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # define __sigsetjmp_symbol __sigsetjmp
 # define __sigjmp_save_symbol __sigjmp_save
 # include "setjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 /* Build a versioned object for libc.  */
 versioned_symbol (libc, __vmx__sigsetjmp, __sigsetjmp, GLIBC_2_3_4)
 # define __sigsetjmp_symbol __vmx__sigsetjmp
@@ -43,4 +43,4 @@ compat_symbol (libc, __novmx__sigsetjmp, __sigsetjmp, GLIBC_2_0)
 #  define __sigjmp_save_symbol __novmx__sigjmp_save
 #  include "setjmp-common.S"
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c b/sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c
index baaa6b4bcf..2b54622317 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <strings.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c
index 94c22ef4ea..d8c6d4de92 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # undef memcpy
 /* Redefine memchr so that the compiler won't make the weak_alias point
    to internal hidden definition (__GI_memchr), since PPC32 does not
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S
index 3b473a354a..03c72269c5 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .globl C_SYMBOL_NAME(__memcmp_ppc);				\
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
index 79fec67d66..04ed027743 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S
index e525c2f6a3..0f1f404b26 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .globl C_SYMBOL_NAME(__memcpy_ppc);				\
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
index f263a38687..70b5298a63 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
@@ -19,7 +19,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need memcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
index 10701484ff..8b30143c8b 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* Redefine memmove so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
 # include <string.h>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
index 89f4912fc9..5d6298229c 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define NO_MEMPCPY_STPCPY_REDIRECT
 # include <string.h>
 # include <shlib-compat.h>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
index c30e7d6963..435987a3da 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define MEMRCHR  __memrchr_ppc
 # include <string.h>
 extern void *__memrchr_ppc (const void *, int, size_t);
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c
index 610a9570c9..353a18609b 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S
index a907eb1e18..6da001aa1a 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .globl C_SYMBOL_NAME(__memset_ppc);				\
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
index e4e798254a..eb1c0b1542 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memset.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
index 3f53cd5725..063f12ef36 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c
index 6d1edf981b..f7ef822779 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strcasecmp __strcasecmp_ppc
 
@@ -27,7 +27,7 @@ extern __typeof (__strcasecmp) __strcasecmp_power7 attribute_hidden;
 #include <string/strcasecmp.c>
 #undef strcasecmp
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c
index 6359bf4eb9..6291233cc1 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strcasecmp_l __strcasecmp_l_ppc
 
@@ -27,7 +27,7 @@ extern __typeof (__strcasecmp_l) __strcasecmp_l_power7 attribute_hidden;
 #include <string/strcasecmp_l.c>
 #undef strcasecmp_l
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
index 74a9d54bb9..99e4e456db 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c
index dab1cbf9ed..db0aab48c2 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S
index 3ee9f93e23..663d4fa2f7 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 
 #include <sysdep.h>
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
index 1b61ba00a0..cb81f5ddd3 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c
index a2227d80bd..a5d4ab7cf5 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strncasecmp __strncasecmp_ppc
 extern __typeof (__strncasecmp) __strncasecmp_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strncasecmp) __strncasecmp_power7 attribute_hidden;
 #include <string/strncase.c>
 #undef strncasecmp
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c
index 9fe3aa0914..65309b302b 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strncasecmp_l __strncasecmp_l_ppc
 extern __typeof (__strncasecmp_l) __strncasecmp_l_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strncasecmp_l) __strncasecmp_l_power7 attribute_hidden;
 #include <string/strncase_l.c>
 #undef strncasecmp_l
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S
index 9a857c7f35..f53ab94eb6 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S
@@ -17,7 +17,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .globl C_SYMBOL_NAME(__strncmp_ppc);			\
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
index a329f77b84..9faad6d23e 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
index 62d4918e41..aca4c537e8 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c
index a42f70c3b3..9a067afacd 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c
@@ -17,7 +17,7 @@
 
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 #   undef libc_hidden_def
 #   define libc_hidden_def(name)  \
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c
index 216d2bc61c..6b8cd9c528 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
index c135835599..148913a469 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
@@ -17,7 +17,7 @@
 
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define WCSCPY  __wcscpy_ppc
 #endif
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c
index 251660a617..7c6edd83be 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c
index 9c7fe2da74..7b7edfb8cc 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c
@@ -17,7 +17,7 @@
 
 #include <wchar.h>
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define WCSRCHR  __wcsrchr_ppc
 #endif
 
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c
index 42e2d8eb93..deec86f7ca 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c
index 889be2555f..54ca039263 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <stddef.h>
 # include <memcopy.h>
 # include <shlib-compat.h>
diff --git a/sysdeps/powerpc/powerpc32/power6/memset.S b/sysdeps/powerpc/powerpc32/power6/memset.S
index 445fa44b1a..811a7efded 100644
--- a/sysdeps/powerpc/powerpc32/power6/memset.S
+++ b/sysdeps/powerpc/powerpc32/power6/memset.S
@@ -228,7 +228,7 @@ L(nzCacheAligned128):
 	ori	r1,r1,0
         stw     rCHR,60(rMEMP3)
 	blt	cr6,L(cacheAligned1)
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	lfd	0,-128(rMEMP)
 #endif
 	b	L(nzCacheAligned256)
@@ -236,7 +236,7 @@ L(nzCacheAligned128):
 L(nzCacheAligned256):
 	cmplwi	cr1,rLEN,256
 	addi	rMEMP3,rMEMP,64
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 /* When we are not in libc we should use only GPRs to avoid the FPU lock
    interrupt.  */
 	stw	rCHR,0(rMEMP)
diff --git a/sysdeps/powerpc/powerpc32/setjmp.S b/sysdeps/powerpc/powerpc32/setjmp.S
index 9b587e0477..c73e65cee7 100644
--- a/sysdeps/powerpc/powerpc32/setjmp.S
+++ b/sysdeps/powerpc/powerpc32/setjmp.S
@@ -19,13 +19,13 @@
 #include <shlib-compat.h>
 #include <libc-symbols.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # define __sigsetjmp_symbol __sigsetjmp
 # define __sigjmp_save_symbol __sigjmp_save
 # include "setjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 /* Build a versioned object for libc.  */
 versioned_symbol (libc, __vmx__sigsetjmp, __sigsetjmp, GLIBC_2_3_4)
 # define __sigsetjmp_symbol __vmx__sigsetjmp
@@ -42,4 +42,4 @@ compat_symbol (libc, __novmx__sigsetjmp, __sigsetjmp, GLIBC_2_0)
 #  define __sigjmp_save_symbol __novmx__sigjmp_save
 #  include "setjmp-common.S"
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc64/__longjmp.S b/sysdeps/powerpc/powerpc64/__longjmp.S
index 0f446817bf..9313eab567 100644
--- a/sysdeps/powerpc/powerpc64/__longjmp.S
+++ b/sysdeps/powerpc/powerpc64/__longjmp.S
@@ -20,11 +20,11 @@
 #include <rtld-global-offsets.h>
 #include <shlib-compat.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # include "__longjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 strong_alias (__vmx__longjmp, __longjmp)
 # define __longjmp  __vmx__longjmp
 # include "__longjmp-common.S"
@@ -36,4 +36,4 @@ strong_alias (__vmx__longjmp, __longjmp)
 #  define __longjmp  __novmx__longjmp
 #  include "__longjmp-common.S"
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/powerpc/powerpc64/multiarch/bzero.c b/sysdeps/powerpc/powerpc64/multiarch/bzero.c
index 298cf005a1..bf67e463c7 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/bzero.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/bzero.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <strings.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memchr.c b/sysdeps/powerpc/powerpc64/multiarch/memchr.c
index ca0f714385..1d763a6736 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c
index 1a39d4aed0..74626f561e 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c
@@ -22,7 +22,7 @@
 #define weak_alias(name, aliasname) \
   extern __typeof (__memcmp_ppc) aliasname \
     __attribute__ ((weak, alias ("__memcmp_ppc")));
-#if !defined(NOT_IN_libc) && defined(SHARED)
+#if IS_IN (libc) && defined(SHARED)
 # undef libc_hidden_builtin_def
 # define libc_hidden_builtin_def(name) \
   __hidden_ver1(__memcmp_ppc, __GI_memcmp, __memcmp_ppc);
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcmp.c b/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
index af90f0ab98..b0325de499 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcmp.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S
index c63065439f..8365c27119 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memcpy.c b/sysdeps/powerpc/powerpc64/multiarch/memcpy.c
index 305e963e63..22bca62a5e 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memcpy.c
@@ -19,7 +19,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need memcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* Redefine memcpy so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
 # undef memcpy
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c
index ff78fe6257..fab0312c93 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c
@@ -18,7 +18,7 @@
 #include <string.h>
 
 #define MEMMOVE __memmove_ppc
-#if !defined(NOT_IN_libc) && defined(SHARED)
+#if IS_IN (libc) && defined(SHARED)
 # undef libc_hidden_builtin_def
 # define libc_hidden_builtin_def(name)
 #endif
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memmove.c b/sysdeps/powerpc/powerpc64/multiarch/memmove.c
index 9a1ce8f688..20a3a9e576 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memmove.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memmove.c
@@ -19,7 +19,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need memmove before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* Redefine memmove so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
 # undef memmove
diff --git a/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
index 89f4912fc9..5d6298229c 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define NO_MEMPCPY_STPCPY_REDIRECT
 # include <string.h>
 # include <shlib-compat.h>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memrchr.c b/sysdeps/powerpc/powerpc64/multiarch/memrchr.c
index 610a9570c9..353a18609b 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memrchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memrchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S
index 3601a77cd4..ff88f48e1d 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S
@@ -29,7 +29,7 @@ ENTRY (__bzero_ppc)
 END_GEN_TB (__bzero_ppc,TB_TOCLESS)
 
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/memset.c b/sysdeps/powerpc/powerpc64/multiarch/memset.c
index 9c7ed10c87..5c077738b4 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/memset.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/memset.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* Redefine memset so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
 # undef memset
diff --git a/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
index 3f53cd5725..063f12ef36 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S
index d80c82fb11..b2213a8629 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
index 28153b7266..11458cb2a3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # define NO_MEMPCPY_STPCPY_REDIRECT
 # include <string.h>
 # include <shlib-compat.h>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
index dbf85214a2..5c3551be38 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/stpncpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c b/sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c
index 7f02a25207..3e440b5e93 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strcasecmp __strcasecmp_ppc
 extern __typeof (__strcasecmp) __strcasecmp_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strcasecmp) __strcasecmp_power7 attribute_hidden;
 #include <string/strcasecmp.c>
 #undef strcasecmp
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c b/sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c
index a3374c3286..623d844532 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strcasecmp_l __strcasecmp_l_ppc
 extern __typeof (__strcasecmp_l) __strcasecmp_l_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strcasecmp_l) __strcasecmp_l_power7 attribute_hidden;
 #include <string/strcasecmp_l.c>
 #undef strcasecmp_l
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcat.c b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
index 847a62de52..ec210629d7 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcat.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcat.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strchr.c b/sysdeps/powerpc/powerpc64/multiarch/strchr.c
index 74a9d54bb9..99e4e456db 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strchr.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strchrnul.c b/sysdeps/powerpc/powerpc64/multiarch/strchrnul.c
index dab1cbf9ed..db0aab48c2 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strchrnul.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strchrnul.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S
index 93d12771f0..e65c11b750 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
index 2013301aa1..4d72a4b9ba 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S
index 33a8b1c92e..fb38a3aa51 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef EALIGN
 # define EALIGN(name, alignt, words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcpy.c b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
index 1b6e9e0665..8efebcd321 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcspn.c b/sysdeps/powerpc/powerpc64/multiarch/strcspn.c
index 3609d93ad2..156fa6aa71 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strcspn.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strcspn.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
index a195e9a0c1..c9bfed0b0c 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # undef ENTRY
 # define ENTRY(name)						\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strlen.c b/sysdeps/powerpc/powerpc64/multiarch/strlen.c
index d2c26e9a9c..bffb0390e6 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strlen.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strlen.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 /* Redefine strlen so that the compiler won't complain about the type
    mismatch with the IFUNC selector in strong_alias, below.  */
 # undef strlen
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncase.c b/sysdeps/powerpc/powerpc64/multiarch/strncase.c
index 05eba7c364..8956c70c6c 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncase.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncase.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strncasecmp __strncasecmp_ppc
 extern __typeof (__strncasecmp) __strncasecmp_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strncasecmp) __strncasecmp_power7 attribute_hidden;
 #include <string/strncase.c>
 #undef strncasecmp
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncase_l.c b/sysdeps/powerpc/powerpc64/multiarch/strncase_l.c
index 4014269ba9..1b4bc68e05 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncase_l.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncase_l.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # define strncasecmp_l __strncasecmp_l_ppc
 extern __typeof (__strncasecmp_l) __strncasecmp_l_ppc attribute_hidden;
@@ -26,7 +26,7 @@ extern __typeof (__strncasecmp_l) __strncasecmp_l_power7 attribute_hidden;
 #include <string/strncase_l.c>
 #undef strncasecmp_l
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncat.c b/sysdeps/powerpc/powerpc64/multiarch/strncat.c
index db98ec1a00..cdf892665f 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncat.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncat.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S b/sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S
index 14a2bec648..c404977e8f 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S
@@ -17,7 +17,7 @@
 
 #include <sysdep.h>
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 #undef EALIGN
 #define EALIGN(name,alignt,words)				\
   .section ".text";						\
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncmp.c b/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
index 9829d69395..7830ebaf56 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncmp.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c
index e3111d259c..79ae3820e3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c
@@ -22,7 +22,7 @@
 #define weak_alias(name, aliasname) \
   extern __typeof (__strncpy_ppc) aliasname \
     __attribute__ ((weak, alias ("__strncpy_ppc")));
-#if !defined(NOT_IN_libc) && defined(SHARED)
+#if IS_IN (libc) && defined(SHARED)
 # undef libc_hidden_builtin_def
 # define libc_hidden_builtin_def(name) \
   __hidden_ver1(__strncpy_ppc, __GI_strncpy, __strncpy_ppc);
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncpy.c b/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
index 8fd5e4b0c8..771b731c5a 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strncpy.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/ >.  */
 
 /* Define multiple versions only for definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strnlen.c b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
index 392603117f..02b654fac3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strnlen.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strpbrk.c b/sysdeps/powerpc/powerpc64/multiarch/strpbrk.c
index 8b05536ae1..47ab6d3525 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strpbrk.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strpbrk.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c
index 5633a9f003..ef7cc65aed 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c
@@ -22,7 +22,7 @@
 #define weak_alias(name, aliasname) \
   extern __typeof (__strrchr_ppc) aliasname \
     __attribute__ ((weak, alias ("__strrchr_ppc")));
-#if !defined(NOT_IN_libc) && defined(SHARED)
+#if IS_IN (libc) && defined(SHARED)
 # undef libc_hidden_builtin_def
 # define libc_hidden_builtin_def(name) \
   __hidden_ver1(__strrchr_ppc, __GI_strrchr, __strrchr_ppc);
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
index 046162f2d7..11d3f625de 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strrchr.c
@@ -17,7 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 /* Define multiple versions only for definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c
index d543772a97..b35af3e016 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c
@@ -22,7 +22,7 @@
 #define weak_alias(name, aliasname) \
   extern __typeof (__strspn_ppc) aliasname \
     __attribute__ ((weak, alias ("__strspn_ppc")));
-#if !defined(NOT_IN_libc) && defined(SHARED)
+#if IS_IN (libc) && defined(SHARED)
 # undef libc_hidden_builtin_def
 # define libc_hidden_builtin_def(name) \
   __hidden_ver1(__strspn_ppc, __GI_strspn, __strspn_ppc);
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strspn.c b/sysdeps/powerpc/powerpc64/multiarch/strspn.c
index bf8c877ec2..dd9ec18ba3 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/strspn.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/strspn.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <string.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/wcschr.c b/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
index 216d2bc61c..6b8cd9c528 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/wcschr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/wcscpy.c b/sysdeps/powerpc/powerpc64/multiarch/wcscpy.c
index 5c0a6d339c..aadf490332 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/wcscpy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/wcscpy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c b/sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c
index 3d0ab422e9..91ba389ccb 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 # include <shlib-compat.h>
 # include "init-arch.h"
diff --git a/sysdeps/powerpc/powerpc64/multiarch/wordcopy.c b/sysdeps/powerpc/powerpc64/multiarch/wordcopy.c
index 889be2555f..54ca039263 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/wordcopy.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/wordcopy.c
@@ -16,7 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <stddef.h>
 # include <memcopy.h>
 # include <shlib-compat.h>
diff --git a/sysdeps/powerpc/powerpc64/setjmp.S b/sysdeps/powerpc/powerpc64/setjmp.S
index c15908c126..a8de3bbbcd 100644
--- a/sysdeps/powerpc/powerpc64/setjmp.S
+++ b/sysdeps/powerpc/powerpc64/setjmp.S
@@ -20,7 +20,7 @@
 #include <rtld-global-offsets.h>
 #include <shlib-compat.h>
 
-#if defined NOT_IN_libc
+#if !IS_IN (libc)
 /* Build a non-versioned object for rtld-*.  */
 # define setjmp_symbol setjmp
 # define _setjmp_symbol _setjmp
@@ -28,7 +28,7 @@
 # define __sigjmp_save_symbol __sigjmp_save
 # include "setjmp-common.S"
 
-#else /* !NOT_IN_libc */
+#else /* IS_IN (libc) */
 /* Build a versioned object for libc.  */
 versioned_symbol (libc, __vmxsetjmp, setjmp, GLIBC_2_3_4)
 versioned_symbol (libc, __vmx_setjmp, _setjmp, GLIBC_2_3_4)
@@ -58,4 +58,4 @@ compat_symbol (libc, __novmx__sigsetjmp,__sigsetjmp, GLIBC_2_3)
 #  include "setjmp-common.S"
 strong_alias (__novmxsetjmp, __novmx__setjmp)
 # endif
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
diff --git a/sysdeps/s390/s390-32/multiarch/ifunc-resolve.c b/sysdeps/s390/s390-32/multiarch/ifunc-resolve.c
index 2ccfc9c105..a46c9a1140 100644
--- a/sysdeps/s390/s390-32/multiarch/ifunc-resolve.c
+++ b/sysdeps/s390/s390-32/multiarch/ifunc-resolve.c
@@ -23,7 +23,7 @@
 #define STFLE_BITS_Z10  34 /* General instructions extension */
 #define STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #define IFUNC_RESOLVE(FUNC)						\
   asm (".globl " #FUNC "\n\t"						\
diff --git a/sysdeps/s390/s390-32/multiarch/memcmp.S b/sysdeps/s390/s390-32/multiarch/memcmp.S
index f298baa2ac..32f08ef94a 100644
--- a/sysdeps/s390/s390-32/multiarch/memcmp.S
+++ b/sysdeps/s390/s390-32/multiarch/memcmp.S
@@ -27,7 +27,7 @@
 
        .text
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 ENTRY(memcmp_z196)
 	.machine "z196"
@@ -96,7 +96,7 @@ END(memcmp_z10)
 
 #include "../memcmp.S"
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 .globl   memcmp
 .set     memcmp,memcmp_g5
 .weak    bcmp
diff --git a/sysdeps/s390/s390-32/multiarch/memcpy.S b/sysdeps/s390/s390-32/multiarch/memcpy.S
index 78ed7379cd..bc65bd8119 100644
--- a/sysdeps/s390/s390-32/multiarch/memcpy.S
+++ b/sysdeps/s390/s390-32/multiarch/memcpy.S
@@ -27,7 +27,7 @@
 
        .text
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 
 ENTRY(memcpy_z196)
 	.machine "z196"
@@ -92,7 +92,7 @@ END(memcpy_z10)
 
 #include "../memcpy.S"
 
-#if !defined SHARED || defined NOT_IN_libc
+#if !defined SHARED || !IS_IN (libc)
 .globl   memcpy
 .set     memcpy,memcpy_g5
 #endif
diff --git a/sysdeps/s390/s390-32/multiarch/memset.S b/sysdeps/s390/s390-32/multiarch/memset.S
index 99d7df0dd2..971c593dfe 100644
--- a/sysdeps/s390/s390-32/multiarch/memset.S
+++ b/sysdeps/s390/s390-32/multiarch/memset.S
@@ -27,7 +27,7 @@
 
        .text
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 ENTRY(memset_z196)
 	.machine "z196"
@@ -107,7 +107,7 @@ END(memset_mvcle)
 
 #include "../memset.S"
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 .globl   memset
 .set     memset,memset_g5
 #endif
diff --git a/sysdeps/s390/s390-64/multiarch/ifunc-resolve.c b/sysdeps/s390/s390-64/multiarch/ifunc-resolve.c
index f8c69ffbb8..f8b9040109 100644
--- a/sysdeps/s390/s390-64/multiarch/ifunc-resolve.c
+++ b/sysdeps/s390/s390-64/multiarch/ifunc-resolve.c
@@ -23,7 +23,7 @@
 #define STFLE_BITS_Z10  34 /* General instructions extension */
 #define STFLE_BITS_Z196 45 /* Distinct operands, pop ... */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 #define IFUNC_RESOLVE(FUNC)						\
   asm (".globl " #FUNC "\n\t"						\
diff --git a/sysdeps/s390/s390-64/multiarch/memcmp.S b/sysdeps/s390/s390-64/multiarch/memcmp.S
index c31d7c446c..8e4eca2255 100644
--- a/sysdeps/s390/s390-64/multiarch/memcmp.S
+++ b/sysdeps/s390/s390-64/multiarch/memcmp.S
@@ -27,7 +27,7 @@
 
        .text
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 ENTRY(memcmp_z196)
 	.machine "z196"
@@ -93,7 +93,7 @@ END(memcmp_z10)
 
 #include "../memcmp.S"
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 .globl   memcmp
 .set     memcmp,memcmp_z900
 .weak    bcmp
diff --git a/sysdeps/s390/s390-64/multiarch/memcpy.S b/sysdeps/s390/s390-64/multiarch/memcpy.S
index 6590f43f27..2536ef4773 100644
--- a/sysdeps/s390/s390-64/multiarch/memcpy.S
+++ b/sysdeps/s390/s390-64/multiarch/memcpy.S
@@ -27,7 +27,7 @@
 
        .text
 
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 
 ENTRY(memcpy_z196)
         .machine "z196"
@@ -88,7 +88,7 @@ END(memcpy_z10)
 
 #include "../memcpy.S"
 
-#if !defined SHARED || defined NOT_IN_libc
+#if !defined SHARED || !IS_IN (libc)
 .globl   memcpy
 .set     memcpy,memcpy_z900
 #endif
diff --git a/sysdeps/s390/s390-64/multiarch/memset.S b/sysdeps/s390/s390-64/multiarch/memset.S
index 3b962696dd..4d52051ac7 100644
--- a/sysdeps/s390/s390-64/multiarch/memset.S
+++ b/sysdeps/s390/s390-64/multiarch/memset.S
@@ -27,7 +27,7 @@
 
        .text
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 ENTRY(memset_z196)
 	.machine "z196"
@@ -103,7 +103,7 @@ END(memset_mvcle)
 
 #include "../memset.S"
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 .globl   memset
 .set     memset,memset_z900
 #endif
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
index 4b7b22d030..a1c558840a 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S
@@ -35,7 +35,7 @@
 #define XCC xcc
 #endif
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2,#scratch
 	.register	%g3,#scratch
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
index a1a9642bd8..a77618b2d9 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S
@@ -137,7 +137,7 @@
 	LOAD(ldd, base + 0x28, %x5); \
 	LOAD(ldd, base + 0x30, %x6);
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2,#scratch
 	.register	%g3,#scratch
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S
index 63e0d8333e..24c6c6db33 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S
@@ -46,7 +46,7 @@
 #define STORE(type,src,addr)	type src, [addr]
 #define STORE_INIT(src,addr)	stxa src, [addr] STORE_ASI
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2,#scratch
 	.register	%g3,#scratch
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
index ffb36468de..88a58d6143 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
@@ -30,7 +30,7 @@
 #define XCC xcc
 #endif
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2,#scratch
 	.register	%g3,#scratch
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy.S b/sysdeps/sparc/sparc64/multiarch/memcpy.S
index 62977a4d3c..dad39eca2c 100644
--- a/sysdeps/sparc/sparc64/multiarch/memcpy.S
+++ b/sysdeps/sparc/sparc64/multiarch/memcpy.S
@@ -20,7 +20,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(memcpy)
 	.type	memcpy, @gnu_indirect_function
diff --git a/sysdeps/sparc/sparc64/multiarch/memset-niagara1.S b/sysdeps/sparc/sparc64/multiarch/memset-niagara1.S
index ed53522c14..ae45f5ddc1 100644
--- a/sysdeps/sparc/sparc64/multiarch/memset-niagara1.S
+++ b/sysdeps/sparc/sparc64/multiarch/memset-niagara1.S
@@ -28,7 +28,7 @@
 #define XCC xcc
 #endif
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2,#scratch
 
diff --git a/sysdeps/sparc/sparc64/multiarch/memset-niagara4.S b/sysdeps/sparc/sparc64/multiarch/memset-niagara4.S
index c090c50e9d..dc17e89744 100644
--- a/sysdeps/sparc/sparc64/multiarch/memset-niagara4.S
+++ b/sysdeps/sparc/sparc64/multiarch/memset-niagara4.S
@@ -21,7 +21,7 @@
 
 #define ASI_BLK_INIT_QUAD_LDD_P	0xe2
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 	.register	%g2, #scratch
 	.register	%g3, #scratch
diff --git a/sysdeps/sparc/sparc64/multiarch/memset.S b/sysdeps/sparc/sparc64/multiarch/memset.S
index 96c75e0d06..2f63fe9343 100644
--- a/sysdeps/sparc/sparc64/multiarch/memset.S
+++ b/sysdeps/sparc/sparc64/multiarch/memset.S
@@ -20,7 +20,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(memset)
 	.type	memset, @gnu_indirect_function
diff --git a/sysdeps/unix/alpha/sysdep.S b/sysdeps/unix/alpha/sysdep.S
index a39ee617ce..22b8b6cbb4 100644
--- a/sysdeps/unix/alpha/sysdep.S
+++ b/sysdeps/unix/alpha/sysdep.S
@@ -28,7 +28,7 @@
 	.text
 #endif
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define SYSCALL_ERROR_ERRNO __libc_errno
 #else
 # define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
index 0b5ff20229..4a280cd67e 100644
--- a/sysdeps/unix/alpha/sysdep.h
+++ b/sysdeps/unix/alpha/sysdep.h
@@ -372,7 +372,7 @@ __LABEL(name)						\
 #else
 # include <stdint.h>
 # if (IS_IN (rtld) \
-      || (!defined SHARED && (!defined NOT_IN_libc \
+      || (!defined SHARED && (IS_IN (libc) \
 			      || IS_IN (libpthread))))
 extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
 #  define PTR_MANGLE(var) \
diff --git a/sysdeps/unix/make-syscalls.sh b/sysdeps/unix/make-syscalls.sh
index fd6ebb4dbc..567081a624 100644
--- a/sysdeps/unix/make-syscalls.sh
+++ b/sysdeps/unix/make-syscalls.sh
@@ -96,7 +96,7 @@ emit_weak_aliases()
       *@@*)
 	base=`echo $name | sed 's/@@.*//'`
 	ver=`echo $name | sed 's/.*@@//;s/\./_/g'`
-	echo "	 echo '#ifndef NOT_IN_libc'; \\"
+	echo "	 echo '#if IS_IN (libc)'; \\"
 	if test -z "$vcount" ; then
 	  source=$strong
 	  vcount=1
@@ -113,7 +113,7 @@ emit_weak_aliases()
       *@*)
 	base=`echo $name | sed 's/@.*//'`
 	ver=`echo $name | sed 's/.*@//;s/\./_/g'`
-	echo "	 echo '#if defined SHARED && !defined NOT_IN_libc'; \\"
+	echo "	 echo '#if defined SHARED && IS_IN (libc)'; \\"
 	if test -z "$vcount" ; then
 	  source=$strong
 	  vcount=1
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 2d6d8bbc73..72754b76cc 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -179,7 +179,6 @@ sysdep-rtld-routines += dl-brk dl-sbrk dl-getcwd dl-openat64 dl-opendir \
 			dl-fxstatat64
 
 libof-lddlibc4 = lddlibc4
-CPPFLAGS-lddlibc4 += -DNOT_IN_libc
 
 others += pldd
 install-bin += pldd
diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
index f2f8009b3c..de88ad2170 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				\
@@ -85,7 +85,7 @@ ENTRY (name);								\
 #  define CENABLE	bl __pthread_enable_asynccancel
 #  define CDISABLE	bl __pthread_disable_asynccancel
 #  define __local_multiple_threads __pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	bl __libc_enable_asynccancel
 #  define CDISABLE	bl __libc_disable_asynccancel
 #  define __local_multiple_threads __libc_multiple_threads
@@ -96,7 +96,7 @@ ENTRY (name);								\
 #  error Unsupported library
 # endif
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep.h b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
index 3fb6742759..45a86365cd 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
@@ -92,7 +92,7 @@
 
 # define ret_ERRVAL ret
 
-# if NOT_IN_libc
+# if !IS_IN (libc)
 #  define SYSCALL_ERROR  .Lsyscall_error
 #  if RTLD_PRIVATE_ERRNO
 #   define SYSCALL_ERROR_HANDLER				\
@@ -310,7 +310,7 @@
 
 /* Pointer mangling is supported for AArch64.  */
 #if (IS_IN (rtld) || \
-     (!defined SHARED && (!defined NOT_IN_libc \
+     (!defined SHARED && (IS_IN (libc) \
 			  || IS_IN (libpthread))))
 # ifdef __ASSEMBLER__
 #  define PTR_MANGLE(dst, src, guard, tmp)                                \
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h b/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
index 5479556c91..d8439bf09f 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 /* ??? Assumes that nothing comes between PSEUDO and PSEUDO_END
    besides "ret".  */
@@ -117,7 +117,7 @@ __LABEL($multi_error)						\
 #  define __local_enable_asynccancel	__pthread_enable_asynccancel
 #  define __local_disable_asynccancel	__pthread_disable_asynccancel
 #  define __local_multiple_threads	__pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define __local_enable_asynccancel	__libc_enable_asynccancel
 #  define __local_disable_asynccancel	__libc_disable_asynccancel
 #  define __local_multiple_threads	__libc_multiple_threads
@@ -136,7 +136,7 @@ __LABEL($multi_error)						\
 #  define CDISABLE	jsr ra, __local_disable_asynccancel; ldgp ra, 0(gp)
 # endif
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/alpha/vfork.S b/sysdeps/unix/sysv/linux/alpha/vfork.S
index befcd78e60..d18ae27834 100644
--- a/sysdeps/unix/sysv/linux/alpha/vfork.S
+++ b/sysdeps/unix/sysv/linux/alpha/vfork.S
@@ -49,7 +49,7 @@ ENTRY(__libc_vfork)
 
 PSEUDO_END (__libc_vfork)
 
-#if !NOT_IN_libc
+#if IS_IN (libc)
 weak_alias (__libc_vfork, vfork)
 strong_alias (__libc_vfork, __vfork)
 libc_hidden_def (__vfork)
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h b/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
index 9211d049a4..f966e9564d 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 /* NOTE: We do mark syscalls with unwind annotations, for the benefit of
    cancellation; but they're really only accurate at the point of the
@@ -185,7 +185,7 @@
 #  define CENABLE	bl PLTJMP(__pthread_enable_asynccancel)
 #  define CDISABLE	bl PLTJMP(__pthread_disable_asynccancel)
 #  define __local_multiple_threads __pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	bl PLTJMP(__libc_enable_asynccancel)
 #  define CDISABLE	bl PLTJMP(__libc_disable_asynccancel)
 #  define __local_multiple_threads __libc_multiple_threads
@@ -196,7 +196,7 @@
 #  error Unsupported library
 # endif
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h
index 91bdca5226..f2d334329d 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep.h
@@ -136,7 +136,7 @@
 
 #define ret_ERRVAL PSEUDO_RET_NOERRNO
 
-#if NOT_IN_libc
+#if !IS_IN (libc)
 # define SYSCALL_ERROR __local_syscall_error
 # if RTLD_PRIVATE_ERRNO
 #  define SYSCALL_ERROR_HANDLER					\
diff --git a/sysdeps/unix/sysv/linux/getpid.c b/sysdeps/unix/sysv/linux/getpid.c
index 937b1d4e11..af5db449c3 100644
--- a/sysdeps/unix/sysv/linux/getpid.c
+++ b/sysdeps/unix/sysv/linux/getpid.c
@@ -21,7 +21,7 @@
 #include <sysdep.h>
 
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 static inline __attribute__((always_inline)) pid_t really_getpid (pid_t oldval);
 
 static inline __attribute__((always_inline)) pid_t
@@ -48,7 +48,7 @@ really_getpid (pid_t oldval)
 pid_t
 __getpid (void)
 {
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
   INTERNAL_SYSCALL_DECL (err);
   pid_t result = INTERNAL_SYSCALL (getpid, err, 0);
 #else
diff --git a/sysdeps/unix/sysv/linux/hppa/lowlevellock.h b/sysdeps/unix/sysv/linux/hppa/lowlevellock.h
index 9a60492479..2a4d273e73 100644
--- a/sysdeps/unix/sysv/linux/hppa/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/hppa/lowlevellock.h
@@ -58,7 +58,7 @@
 /* Initialize locks to zero.  */
 #define LLL_MUTEX_LOCK_INITIALIZER (0)
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
index 5d4ff342d4..aec3f37afd 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # ifndef NO_ERROR
 #  define NO_ERROR -0x1000
@@ -216,7 +216,7 @@ L(pre_end):						ASM_LINE_SEP	\
 #   define CDISABLE .import __pthread_disable_asynccancel,code ASM_LINE_SEP \
 			bl __pthread_disable_asynccancel,%r2 ASM_LINE_SEP
 #  endif
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  ifdef PIC
 #   define CENABLE .import __libc_enable_asynccancel,code ASM_LINE_SEP \
 			bl __libc_enable_asynccancel,%r2 ASM_LINE_SEP
@@ -246,7 +246,7 @@ L(pre_end):						ASM_LINE_SEP	\
 
 # if IS_IN (libpthread)
 #  define __local_multiple_threads __pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define __local_multiple_threads __libc_multiple_threads
 # elif IS_IN (librt)
 #  define __local_multiple_threads __librt_multiple_threads
@@ -271,7 +271,7 @@ L(pre_end):						ASM_LINE_SEP	\
 # define NO_CANCELLATION 1
 
 #endif
-/* !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt) */
+/* IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) */
 
 #ifndef __ASSEMBLER__
 # define RTLD_SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S b/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
index 4ed46fc63e..13596f11ac 100644
--- a/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S
@@ -115,7 +115,7 @@ __lll_lock_wait_private:
 	cfi_endproc
 	.size	__lll_lock_wait_private,.-__lll_lock_wait_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_lock_wait
 	.type	__lll_lock_wait,@function
 	.hidden	__lll_lock_wait
@@ -361,7 +361,7 @@ __lll_unlock_wake_private:
 	cfi_endproc
 	.size	__lll_unlock_wake_private,.-__lll_unlock_wake_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_unlock_wake
 	.type	__lll_unlock_wake,@function
 	.hidden	__lll_unlock_wake
diff --git a/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index ffae477160..1032f4b666 100644
--- a/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -71,7 +71,7 @@
 #define LLL_SHARED	FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
@@ -169,7 +169,7 @@
    value is zero.  In case the operation failed, the cmpxchg instruction
    has loaded the current value of the memory work which is guaranteed
    to be nonzero.  */
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_trylock_asm LOCK_INSTR "cmpxchgl %2, %1"
 #else
 # define __lll_trylock_asm "cmpl $0, %%gs:%P5\n\t" \
@@ -198,7 +198,7 @@
 		       : "memory");					      \
      ret; })
 
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_lock_asm_start LOCK_INSTR "cmpxchgl %1, %2\n\t"
 #else
 # define __lll_lock_asm_start "cmpl $0, %%gs:%P6\n\t"			      \
@@ -324,7 +324,7 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count,
 		       : "memory");					      \
      result; })
 
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_unlock_asm LOCK_INSTR "subl $1, %0\n\t"
 #else
 # define __lll_unlock_asm "cmpl $0, %%gs:%P3\n\t"			      \
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
index c17ff6c586..ab15b9d3ef 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -111,7 +111,7 @@
 # if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel;
 #  define CDISABLE	call __pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	call __libc_enable_asynccancel;
 #  define CDISABLE	call __libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index b5380043a8..d751c58e3e 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -34,7 +34,7 @@
 #define SYS_ify(syscall_name)	__NR_##syscall_name
 
 #if defined USE_DL_SYSINFO \
-    && (!defined NOT_IN_libc || IS_IN (libpthread))
+    && (IS_IN (libc) || IS_IN (libpthread))
 # define I386_USE_SYSENTER	1
 #else
 # undef I386_USE_SYSENTER
@@ -115,7 +115,7 @@
 
 # elif defined _LIBC_REENTRANT
 
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/ia64/lowlevellock.h b/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
index fe4a90e7bb..b586731cfb 100644
--- a/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/ia64/lowlevellock.h
@@ -52,7 +52,7 @@
 #define LLL_SHARED	FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
index 0458fcea64..c402dca60f 100644
--- a/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
@@ -22,11 +22,11 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 #  define SYSDEP_CANCEL_ERRNO __libc_errno
 # else
 #  define SYSDEP_CANCEL_ERRNO errno
@@ -182,7 +182,7 @@ __GC_##name:								      \
 # if IS_IN (libpthread)
 #  define CENABLE	br.call.sptk.many b0 = __pthread_enable_asynccancel
 #  define CDISABLE	br.call.sptk.many b0 = __pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	br.call.sptk.many b0 = __libc_enable_asynccancel
 #  define CDISABLE	br.call.sptk.many b0 = __libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.S b/sysdeps/unix/sysv/linux/ia64/sysdep.S
index 004ade1627..9ec89513d1 100644
--- a/sysdeps/unix/sysv/linux/ia64/sysdep.S
+++ b/sysdeps/unix/sysv/linux/ia64/sysdep.S
@@ -34,7 +34,7 @@ ENTRY(__syscall_error)
 	st4	[r2]=r8
 	mov	r8=-1
 #else
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 #  define SYSCALL_ERROR_ERRNO __libc_errno
 # else
 #  define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h
index 094385256a..49684f8296 100644
--- a/sysdeps/unix/sysv/linux/ia64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h
@@ -61,7 +61,7 @@
 #endif
 
 #if defined USE_DL_SYSINFO \
-	&& (!defined NOT_IN_libc \
+	&& (IS_IN (libc) \
 	    || IS_IN (libpthread) || IS_IN (librt))
 # define IA64_USE_NEW_STUB
 #else
diff --git a/sysdeps/unix/sysv/linux/lowlevellock-futex.h b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
index 11150b33ba..8927661544 100644
--- a/sysdeps/unix/sysv/linux/lowlevellock-futex.h
+++ b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
@@ -49,7 +49,7 @@
 #define LLL_SHARED	FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h b/sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h
index b75bf17549..aa116c4c7e 100644
--- a/sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h
+++ b/sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h
@@ -35,7 +35,7 @@
 
 /* We define __rtld_* copies for rtld.
    We need them visible in libc to initialize.  */
-#  if IS_IN (rtld) || !defined NOT_IN_libc
+#  if IS_IN (rtld) || IS_IN (libc)
 extern void *__rtld___vdso_read_tp;
 extern void *__rtld___vdso_atomic_cmpxchg_32;
 extern void *__rtld___vdso_atomic_barrier;
@@ -44,7 +44,7 @@ extern void *__rtld___vdso_atomic_barrier;
 extern void __vdso_read_tp_stub (void);
 extern void __vdso_atomic_cmpxchg_32_stub (void);
 extern void __vdso_atomic_barrier_stub (void);
-#  endif /* IS_IN (rtld) || !NOT_IN_libc */
+#  endif /* IS_IN (rtld) || IS_IN (libc) */
 
 /* RTLD should only use its own copies.  */
 #  if !IS_IN (rtld)
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h b/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
index 33ce922b2f..d5b8445a41 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -103,7 +103,7 @@
 # if IS_IN (libpthread)
 #  define CENABLE	PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE	PSEUDO_JMP (__pthread_disable_asynccancel)
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	PSEUDO_JMP (__libc_enable_asynccancel)
 #  define CDISABLE	PSEUDO_JMP (__libc_disable_asynccancel)
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.h b/sysdeps/unix/sysv/linux/m68k/sysdep.h
index 3a91e867f3..97090884e0 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep.h
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep.h
@@ -101,7 +101,7 @@ SYSCALL_ERROR_LABEL:							      \
     move.l %d0, %a0;							      \
     rts;
 # elif defined _LIBC_REENTRANT
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h b/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h
index 9c21eeb96c..659248428f 100644
--- a/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/microblaze/lowlevellock.h
@@ -52,7 +52,7 @@
 #define LLL_SHARED  FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private)                                      \
diff --git a/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h b/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
index 0fe5b1208a..5e185a34e4 100644
--- a/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # if !IS_IN (librt) || !defined(PIC)
 #  define AC_STACK_SIZE  16  /* space for r15, async_cancel arg and 2 temp words */
@@ -106,7 +106,7 @@ L(pseudo_cancel):                                                    \
 #  define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE  PSEUDO_JMP (__pthread_disable_asynccancel)
 #  define __local_multiple_threads __pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE PSEUDO_JMP (__libc_enable_asynccancel)
 #  define CDISABLE  PSEUDO_JMP (__libc_disable_asynccancel)
 #  define __local_multiple_threads __libc_multiple_threads
@@ -118,7 +118,7 @@ L(pseudo_cancel):                                                    \
 # endif
 
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
index 6f79b14f62..40e4225ed5 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
@@ -27,7 +27,7 @@
    happen before any instructions.  So we use cfi_same_value instead of
    cfi_restore.  */
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 #ifdef __PIC__
 # undef PSEUDO
diff --git a/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h b/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
index 1d711f784a..e12eea71be 100644
--- a/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # ifdef __PIC__
 #  define PSEUDO_CPLOAD .cpload t9;
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index 1d65f20404..0858ce845a 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -19,7 +19,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 extern int __open_nocancel (const char *, int, ...) attribute_hidden;
 extern int __close_nocancel (int) attribute_hidden;
 extern int __read_nocancel (int, void *, size_t) attribute_hidden;
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
index 25bf797f7c..db1dfb8c5a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -23,7 +23,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				\
@@ -84,7 +84,7 @@
 # if IS_IN (libpthread)
 #  define CENABLE	bl __pthread_enable_asynccancel@local
 #  define CDISABLE	bl __pthread_disable_asynccancel@local
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	bl __libc_enable_asynccancel@local
 #  define CDISABLE	bl __libc_disable_asynccancel@local
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
index 8683b6bf77..9fff7505fd 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
@@ -23,7 +23,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # ifdef HAVE_ASM_GLOBAL_DOT_NAME
 #  define DASHDASHPFX(str) .__##str
@@ -107,7 +107,7 @@
 #   define CENABLE	bl JUMPTARGET(__pthread_enable_asynccancel); nop
 #   define CDISABLE	bl JUMPTARGET(__pthread_disable_asynccancel); nop
 #  endif
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  ifdef SHARED
 #   define CENABLE	bl JUMPTARGET(__libc_enable_asynccancel)
 #   define CDISABLE	bl JUMPTARGET(__libc_disable_asynccancel)
diff --git a/sysdeps/unix/sysv/linux/s390/longjmp_chk.c b/sysdeps/unix/sysv/linux/s390/longjmp_chk.c
index 02c96c289a..d18fbdf0a3 100644
--- a/sysdeps/unix/sysv/linux/s390/longjmp_chk.c
+++ b/sysdeps/unix/sysv/linux/s390/longjmp_chk.c
@@ -20,7 +20,7 @@
 
 #include <shlib-compat.h>
 
-#if !defined NOT_IN_libc && defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
+#if IS_IN (libc) && defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
 /* this is a copy from debug/longjmp_chk.c because we need an unique name
    for __longjmp_chk, but it is already named via a define
    for __libc_siglongjmp in debug/longjmp_chk.c.  */
diff --git a/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/sysdeps/unix/sysv/linux/s390/lowlevellock.h
index 2c17b2cab5..14fb4a87ed 100644
--- a/sysdeps/unix/sysv/linux/s390/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/s390/lowlevellock.h
@@ -51,7 +51,7 @@
 #define LLL_SHARED	FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
index d19500ded1..3b027e01f1 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -78,7 +78,7 @@ L(pseudo_end):
 # if IS_IN (libpthread)
 #  define CENABLE	__pthread_enable_asynccancel
 #  define CDISABLE	__pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	__libc_enable_asynccancel
 #  define CDISABLE	__libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
index de3f8a4e84..aca7e22a9c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
@@ -31,7 +31,7 @@
 	.text
 ENTRY(__syscall_error)
 #ifndef PIC
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 #  define SYSCALL_ERROR_ERRNO __libc_errno
 # else
 #  define SYSCALL_ERROR_ERRNO errno
@@ -54,7 +54,7 @@ ENTRY(__syscall_error)
 	br	%r14
 1:	.long	rtld_errno - 0b
 # else
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
index e6fd96a334..f0ef41cef4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
@@ -105,7 +105,7 @@
     br    %r14;								      \
 2:  .long rtld_errno-1b
 # elif defined _LIBC_REENTRANT
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
index 290e464089..3a368c8d5c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
@@ -52,7 +52,7 @@ ENTRY (__libc_vfork)
 	br	%r14
 PSEUDO_END (__libc_vfork)
 
-#if !NOT_IN_libc
+#if IS_IN (libc)
 weak_alias (__libc_vfork, vfork)
 strong_alias (__libc_vfork, __vfork)
 libc_hidden_def (__vfork)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
index 9622d5a9ab..4955ec1cbd 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -73,7 +73,7 @@ L(pseudo_end):
 #  define CENABLE	__pthread_enable_asynccancel
 #  define CDISABLE	__pthread_disable_asynccancel
 #  define __local_multiple_threads	__pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	__libc_enable_asynccancel
 #  define CDISABLE	__libc_disable_asynccancel
 #  define __local_multiple_threads	__libc_multiple_threads
@@ -111,7 +111,7 @@ L(pseudo_end):
 #define LR7_6		lg %r7,56+160(%r15); \
 			cfi_restore (%r7);
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
index 0fbfe9c9e0..6b4a613a6a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
@@ -32,7 +32,7 @@
 .text
 ENTRY(__syscall_error)
 #ifndef PIC
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 #  define SYSCALL_ERROR_ERRNO __libc_errno
 # else
 #  define SYSCALL_ERROR_ERRNO errno
@@ -55,7 +55,7 @@ ENTRY(__syscall_error)
 	lghi	%r2,-1
 	br	%r14
 # else
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
index 917a636ee2..696e4b3c04 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
@@ -113,7 +113,7 @@
     lghi  %r2,-1;							      \
     br    %r14
 # elif defined _LIBC_REENTRANT
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
index 7de1bb07ad..54bb2724c8 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
@@ -53,7 +53,7 @@ ENTRY (__libc_vfork)
 	br	%r14
 PSEUDO_END (__libc_vfork)
 
-#if !NOT_IN_libc
+#if IS_IN (libc)
 weak_alias (__libc_vfork, vfork)
 strong_alias (__libc_vfork, __vfork)
 libc_hidden_def (__vfork)
diff --git a/sysdeps/unix/sysv/linux/sh/lowlevellock.S b/sysdeps/unix/sysv/linux/sh/lowlevellock.S
index 84b8edb86c..3fab373b03 100644
--- a/sysdeps/unix/sysv/linux/sh/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/sh/lowlevellock.S
@@ -172,7 +172,7 @@ __lll_lock_wait_private:
 	cfi_endproc
 	.size	__lll_lock_wait_private,.-__lll_lock_wait_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_lock_wait
 	.type	__lll_lock_wait,@function
 	.hidden	__lll_lock_wait
@@ -454,7 +454,7 @@ __lll_unlock_wake_private:
 	cfi_endproc
 	.size	__lll_unlock_wake_private,.-__lll_unlock_wake_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_unlock_wake
 	.type	__lll_unlock_wake,@function
 	.hidden	__lll_unlock_wake
diff --git a/sysdeps/unix/sysv/linux/sh/lowlevellock.h b/sysdeps/unix/sysv/linux/sh/lowlevellock.h
index 328446c094..e6dbab248d 100644
--- a/sysdeps/unix/sysv/linux/sh/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/sh/lowlevellock.h
@@ -49,7 +49,7 @@
 #define LLL_SHARED     FUTEX_PRIVATE_FLAG
 
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
index 131f42b49f..9b5911c0a2 100644
--- a/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # define _IMM12 #-12
 # define _IMM16 #-16
@@ -108,7 +108,7 @@
 # if IS_IN (libpthread)
 #  define __local_enable_asynccancel	__pthread_enable_asynccancel
 #  define __local_disable_asynccancel	__pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define __local_enable_asynccancel	__libc_enable_asynccancel
 #  define __local_disable_asynccancel	__libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/sh/sysdep.h b/sysdeps/unix/sysv/linux/sh/sysdep.h
index 4fc5dd7775..6f57854466 100644
--- a/sysdeps/unix/sysv/linux/sh/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sh/sysdep.h
@@ -116,7 +116,7 @@
 
 # elif defined _LIBC_REENTRANT
 
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/sh/vfork.S b/sysdeps/unix/sysv/linux/sh/vfork.S
index 76326f5048..63ca02386a 100644
--- a/sysdeps/unix/sysv/linux/sh/vfork.S
+++ b/sysdeps/unix/sysv/linux/sh/vfork.S
@@ -66,7 +66,7 @@ ENTRY (__libc_vfork)
 	.align	2
 PSEUDO_END (__libc_vfork)
 
-#if !NOT_IN_libc
+#if IS_IN (libc)
 weak_alias (__libc_vfork, vfork)
 strong_alias (__libc_vfork, __vfork)
 libc_hidden_def (__vfork)
diff --git a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
index eebf406eae..5c8c3f4588 100644
--- a/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
@@ -57,7 +57,7 @@ extern void __cpu_relax (void);
 #define BUSY_WAIT_NOP	__cpu_relax ()
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
index cc7adfcdeb..526e87554f 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)	\
@@ -71,7 +71,7 @@ __##syscall_name##_nocancel:			\
 # if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel
 #  define CDISABLE	call __pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	call __libc_enable_asynccancel
 #  define CDISABLE	call __libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
index e5bb3b5501..c9f38f4e4e 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
@@ -79,7 +79,7 @@ ENTRY(name);					\
 	 mov	-1, %o0;
 # elif defined _LIBC_REENTRANT
 
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/brk.S b/sysdeps/unix/sysv/linux/sparc/sparc64/brk.S
index 567163f907..875ee3d301 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/brk.S
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/brk.S
@@ -89,7 +89,7 @@ ENTRY (__brk)
 #endif
 	st	%o0, [%g1]
 #else
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	call	HIDDEN_JUMPTARGET(__errno_location)
 #else
 	call	__errno_location
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
index aee3deecbc..e11f7c18c2 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)	\
@@ -69,7 +69,7 @@ __##syscall_name##_nocancel:			\
 # if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel
 #  define CDISABLE	call __pthread_disable_asynccancel
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	call __libc_enable_asynccancel
 #  define CDISABLE	call __libc_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
index e9aedcee0f..52b07c2791 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
@@ -89,7 +89,7 @@ ENTRY(name);					\
 	 mov	-1, %o0;
 # elif defined _LIBC_REENTRANT
 
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h b/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
index 028c3930e1..6c10552b14 100644
--- a/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 /* Allow hacking in some extra code if desired. */
 #ifndef PSEUDO_EXTRA
diff --git a/sysdeps/unix/sysv/linux/tile/sysdep.h b/sysdeps/unix/sysv/linux/tile/sysdep.h
index b521351887..d3b98bd359 100644
--- a/sysdeps/unix/sysv/linux/tile/sysdep.h
+++ b/sysdeps/unix/sysv/linux/tile/sysdep.h
@@ -45,7 +45,7 @@
 #ifndef PIC
 /* For static code, on error jump to __syscall_error directly. */
 # define SYSCALL_ERROR_NAME __syscall_error
-#elif !defined NOT_IN_libc || IS_IN (libpthread)
+#elif IS_IN (libc) || IS_IN (libpthread)
 /* Use the internal name for libc/libpthread shared objects. */
 # define SYSCALL_ERROR_NAME __GI___syscall_error
 #else
diff --git a/sysdeps/unix/sysv/linux/tile/waitpid.S b/sysdeps/unix/sysv/linux/tile/waitpid.S
index 7fa1cca660..dee1b0cce1 100644
--- a/sysdeps/unix/sysv/linux/tile/waitpid.S
+++ b/sysdeps/unix/sysv/linux/tile/waitpid.S
@@ -1,7 +1,7 @@
 /*
 extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
 */
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 /* Call __NR_wait4, providing fourth argument (struct rusage *) as NULL. */
 #define PSEUDO_EXTRA move r3, zero;
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
index f2dca070f3..5d8e77c1a7 100644
--- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
@@ -108,7 +108,7 @@ __lll_lock_wait_private:
 	cfi_endproc
 	.size	__lll_lock_wait_private,.-__lll_lock_wait_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_lock_wait
 	.type	__lll_lock_wait,@function
 	.hidden	__lll_lock_wait
@@ -348,7 +348,7 @@ __lll_unlock_wake_private:
 	cfi_endproc
 	.size	__lll_unlock_wake_private,.-__lll_unlock_wake_private
 
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 	.globl	__lll_unlock_wake
 	.type	__lll_unlock_wake,@function
 	.hidden	__lll_unlock_wake
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
index 37c0faf25a..2f0cf5cb6d 100644
--- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
+++ b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h
@@ -72,7 +72,7 @@
 
 #ifndef __ASSEMBLER__
 
-#if !defined NOT_IN_libc || IS_IN (rtld)
+#if IS_IN (libc) || IS_IN (rtld)
 /* In libc.so or ld.so all futexes are private.  */
 # ifdef __ASSUME_PRIVATE_FUTEX
 #  define __lll_private_flag(fl, private) \
@@ -145,7 +145,7 @@
    value is zero.  In case the operation failed, the cmpxchg instruction
    has loaded the current value of the memory work which is guaranteed
    to be nonzero.  */
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_trylock_asm LOCK_INSTR "cmpxchgl %2, %1"
 #else
 # define __lll_trylock_asm "cmpl $0, __libc_multiple_threads(%%rip)\n\t"      \
@@ -174,7 +174,7 @@
 		       : "memory");					      \
      ret; })
 
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_lock_asm_start LOCK_INSTR "cmpxchgl %4, %2\n\t"		      \
 			      "jz 24f\n\t"
 #else
@@ -316,7 +316,7 @@ extern int __lll_timedlock_elision (int *futex, short *adapt_count,
 		       : "memory", "cx", "cc", "r10", "r11");		      \
      result; })
 
-#if defined NOT_IN_libc || defined UP
+#if !IS_IN (libc) || defined UP
 # define __lll_unlock_asm_start LOCK_INSTR "decl %0\n\t"		      \
 				"je 24f\n\t"
 #else
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
index 2667292155..cecaec1619 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
 /* The code to disable cancellation depends on the fact that the called
    functions are special.  They don't modify registers other than %rax
@@ -63,7 +63,7 @@
 #  define CENABLE	call __pthread_enable_asynccancel;
 #  define CDISABLE	call __pthread_disable_asynccancel;
 #  define __local_multiple_threads __pthread_multiple_threads
-# elif !defined NOT_IN_libc
+# elif IS_IN (libc)
 #  define CENABLE	call __libc_enable_asynccancel;
 #  define CDISABLE	call __libc_disable_asynccancel;
 #  define __local_multiple_threads __libc_multiple_threads
@@ -74,7 +74,7 @@
 #  error Unsupported library
 # endif
 
-# if IS_IN (libpthread) || !defined NOT_IN_libc
+# if IS_IN (libpthread) || IS_IN (libc)
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index 6377183d54..16c497bcb4 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -115,7 +115,7 @@
   neg %eax;					\
   movl %eax, (%rcx)
 # else
-#  ifndef NOT_IN_libc
+#  if IS_IN (libc)
 #   define SYSCALL_ERROR_ERRNO __libc_errno
 #  else
 #   define SYSCALL_ERROR_ERRNO errno
diff --git a/sysdeps/wordsize-32/symbol-hacks.h b/sysdeps/wordsize-32/symbol-hacks.h
index 11e4701c50..38b2b74347 100644
--- a/sysdeps/wordsize-32/symbol-hacks.h
+++ b/sysdeps/wordsize-32/symbol-hacks.h
@@ -23,7 +23,7 @@
    therefore we get PLTs.  Unnecessarily so.  Changing gcc is a big
    task which might not be worth it so we play tricks with the
    assembler.  */
-#if !defined __ASSEMBLER__ && !defined in_divdi3_c && !defined NOT_IN_libc && defined SHARED
+#if !defined __ASSEMBLER__ && !defined in_divdi3_c && IS_IN (libc) && defined SHARED
 asm ("__divdi3 = __divdi3_internal");
 asm ("__udivdi3 = __udivdi3_internal");
 asm ("__moddi3 = __moddi3_internal");
diff --git a/sysdeps/x86_64/memcpy.S b/sysdeps/x86_64/memcpy.S
index 60f3c65183..2c9aa5a160 100644
--- a/sysdeps/x86_64/memcpy.S
+++ b/sysdeps/x86_64/memcpy.S
@@ -30,7 +30,7 @@
 #  define RETVAL	(0)
 #else
 #  define RETVAL	(-8)
-#  if defined SHARED && !defined USE_MULTIARCH && !defined NOT_IN_libc
+#  if defined SHARED && !defined USE_MULTIARCH && IS_IN (libc)
 #    define memcpy	__memcpy
 #    undef libc_hidden_builtin_def
 #    define libc_hidden_builtin_def(name) \
@@ -44,7 +44,7 @@
 
         .text
 
-#if defined PIC && !defined NOT_IN_libc
+#if defined PIC && IS_IN (libc)
 ENTRY_CHK (__memcpy_chk)
 
 	cmpq	%rdx, %rcx
@@ -253,14 +253,14 @@ L(32after):
 /* Handle blocks smaller than 1/2 L1. */
 
 L(fasttry):				/* first 1/2 L1 */
-#ifndef NOT_IN_libc			/* only up to this algorithm outside of libc.so */
+#if IS_IN (libc)			/* only up to this algorithm outside of libc.so */
 	mov	__x86_data_cache_size_half(%rip), %R11_LP
 	cmpq	%rdx, %r11		/* calculate the smaller of */
 	cmovaq	%rdx, %r11		/* remaining bytes and 1/2 L1 */
 #endif
 
 L(fast):				/* good ol' MOVS */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	movq	%r11, %rcx
 	andq	$-8, %r11
 #else
@@ -275,7 +275,7 @@ L(fast):				/* good ol' MOVS */
 	.p2align 4,, 4
 
 L(fastskip):
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	subq	%r11, %rdx		/* check for more */
 	testq	$-8, %rdx
 	jnz	L(fastafter)
@@ -294,7 +294,7 @@ L(fastskip):
 #endif
 	retq				/* exit */
 
-#ifndef NOT_IN_libc			/* none of the algorithms below for RTLD */
+#if IS_IN (libc)			/* none of the algorithms below for RTLD */
 
 	.p2align 4
 
@@ -570,13 +570,13 @@ L(NTskip):
 #endif
 	retq				/* exit */
 
-#endif /* !NOT_IN_libc */
+#endif /* IS_IN (libc) */
 
 END(memcpy)
 
 #ifndef USE_AS_MEMPCPY
 libc_hidden_builtin_def (memcpy)
-# if defined SHARED && !defined USE_MULTIARCH && !defined NOT_IN_libc
+# if defined SHARED && !defined USE_MULTIARCH && IS_IN (libc)
 #  undef memcpy
 #  include <shlib-compat.h>
 versioned_symbol (libc, __memcpy, memcpy, GLIBC_2_14);
diff --git a/sysdeps/x86_64/memmove.c b/sysdeps/x86_64/memmove.c
index 202f5b861e..d538ebaf74 100644
--- a/sysdeps/x86_64/memmove.c
+++ b/sysdeps/x86_64/memmove.c
@@ -17,7 +17,7 @@
 
 #include "string/memmove.c"
 
-#if !defined memmove && !defined NOT_IN_libc
+#if !defined memmove && IS_IN (libc)
 #include <shlib-compat.h>
 
 #if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14)
diff --git a/sysdeps/x86_64/memset.S b/sysdeps/x86_64/memset.S
index db4fb842ef..7fec5779b5 100644
--- a/sysdeps/x86_64/memset.S
+++ b/sysdeps/x86_64/memset.S
@@ -20,7 +20,7 @@
 #include <sysdep.h>
 
 	.text
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 ENTRY(__bzero)
 	movq	%rdi, %rax /* Set return value.  */
 	movq	%rsi, %rdx /* Set n.  */
@@ -42,7 +42,7 @@ ENTRY(__memset_tail)
 END(__memset_tail)
 #endif
 
-#if defined PIC && !defined NOT_IN_libc
+#if defined PIC && IS_IN (libc)
 ENTRY_CHK (__memset_chk)
 	cmpq	%rdx, %rcx
 	jb	HIDDEN_JUMPTARGET (__chk_fail)
@@ -125,7 +125,7 @@ L(between8_16bytes):
 END (memset)
 libc_hidden_builtin_def (memset)
 
-#if defined PIC && !defined NOT_IN_libc && !defined USE_MULTIARCH
+#if defined PIC && IS_IN (libc) && !defined USE_MULTIARCH
 strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
 	.section .gnu.warning.__memset_zero_constant_len_parameter
 	.string "memset used with constant zero length parameter; this could be due to transposed parameters"
diff --git a/sysdeps/x86_64/multiarch/init-arch.h b/sysdeps/x86_64/multiarch/init-arch.h
index ef0abbd226..c701edd185 100644
--- a/sysdeps/x86_64/multiarch/init-arch.h
+++ b/sysdeps/x86_64/multiarch/init-arch.h
@@ -122,7 +122,7 @@ extern void __init_cpu_features (void) attribute_hidden;
 extern const struct cpu_features *__get_cpu_features (void)
      __attribute__ ((const));
 
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 #  define __get_cpu_features()	(&__cpu_features)
 # endif
 
diff --git a/sysdeps/x86_64/multiarch/memcmp-sse4.S b/sysdeps/x86_64/multiarch/memcmp-sse4.S
index e753d62bf4..e747e97de4 100644
--- a/sysdeps/x86_64/multiarch/memcmp-sse4.S
+++ b/sysdeps/x86_64/multiarch/memcmp-sse4.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/x86_64/multiarch/memcmp-ssse3.S b/sysdeps/x86_64/multiarch/memcmp-ssse3.S
index 5f7572fbab..82297edaaf 100644
--- a/sysdeps/x86_64/multiarch/memcmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/memcmp-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/x86_64/multiarch/memcmp.S b/sysdeps/x86_64/multiarch/memcmp.S
index 627d8d05cf..f0beaebdf3 100644
--- a/sysdeps/x86_64/multiarch/memcmp.S
+++ b/sysdeps/x86_64/multiarch/memcmp.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(memcmp)
 	.type	memcmp, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
index 3cac1e33cd..eb5de254e2 100644
--- a/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
+++ b/sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc \
+#if IS_IN (libc) \
     && (defined SHARED \
         || defined USE_AS_MEMMOVE \
 	|| !defined USE_MULTIARCH)
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
index 899ccbc34b..2fa465bc69 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3-back.S
@@ -19,7 +19,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc \
+#if IS_IN (libc) \
     && (defined SHARED \
         || defined USE_AS_MEMMOVE \
 	|| !defined USE_MULTIARCH)
diff --git a/sysdeps/x86_64/multiarch/memcpy-ssse3.S b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
index 0ad9a0008a..7d0755e258 100644
--- a/sysdeps/x86_64/multiarch/memcpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/memcpy-ssse3.S
@@ -19,7 +19,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc \
+#if IS_IN (libc) \
     && (defined SHARED \
         || defined USE_AS_MEMMOVE \
 	|| !defined USE_MULTIARCH)
diff --git a/sysdeps/x86_64/multiarch/memcpy.S b/sysdeps/x86_64/multiarch/memcpy.S
index e666695407..1523313f24 100644
--- a/sysdeps/x86_64/multiarch/memcpy.S
+++ b/sysdeps/x86_64/multiarch/memcpy.S
@@ -25,7 +25,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need memcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 	.text
 ENTRY(__new_memcpy)
 	.type	__new_memcpy, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/memcpy_chk.S b/sysdeps/x86_64/multiarch/memcpy_chk.S
index 076b19a9ea..ded14abc58 100644
--- a/sysdeps/x86_64/multiarch/memcpy_chk.S
+++ b/sysdeps/x86_64/multiarch/memcpy_chk.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  There are no multiarch memcpy functions for static binaries.
  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__memcpy_chk)
diff --git a/sysdeps/x86_64/multiarch/memmove.c b/sysdeps/x86_64/multiarch/memmove.c
index 0c9af7e4df..31d00f8e82 100644
--- a/sysdeps/x86_64/multiarch/memmove.c
+++ b/sysdeps/x86_64/multiarch/memmove.c
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define MEMMOVE __memmove_sse2
 # ifdef SHARED
 #  undef libc_hidden_builtin_def
@@ -41,7 +41,7 @@ extern __typeof (__redirect_memmove) __memmove_avx_unaligned attribute_hidden;
 
 #include "string/memmove.c"
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <shlib-compat.h>
 # include "init-arch.h"
 
diff --git a/sysdeps/x86_64/multiarch/mempcpy.S b/sysdeps/x86_64/multiarch/mempcpy.S
index 7589d8c1ec..3b7bdb0579 100644
--- a/sysdeps/x86_64/multiarch/mempcpy.S
+++ b/sysdeps/x86_64/multiarch/mempcpy.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  In static binaries we need mempcpy before the initialization
    happened.  */
-#if defined SHARED && !defined NOT_IN_libc
+#if defined SHARED && IS_IN (libc)
 ENTRY(__mempcpy)
 	.type	__mempcpy, @gnu_indirect_function
 	cmpl	$0, KIND_OFFSET+__cpu_features(%rip)
diff --git a/sysdeps/x86_64/multiarch/mempcpy_chk.S b/sysdeps/x86_64/multiarch/mempcpy_chk.S
index 88e0b74e83..c0d33fecd2 100644
--- a/sysdeps/x86_64/multiarch/mempcpy_chk.S
+++ b/sysdeps/x86_64/multiarch/mempcpy_chk.S
@@ -24,7 +24,7 @@
 /* Define multiple versions only for the definition in lib and for
    DSO.  There are no multiarch mempcpy functions for static binaries.
  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # ifdef SHARED
 	.text
 ENTRY(__mempcpy_chk)
diff --git a/sysdeps/x86_64/multiarch/memset-avx2.S b/sysdeps/x86_64/multiarch/memset-avx2.S
index b45f8a0d53..0de08002d7 100644
--- a/sysdeps/x86_64/multiarch/memset-avx2.S
+++ b/sysdeps/x86_64/multiarch/memset-avx2.S
@@ -18,7 +18,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc
+#if IS_IN (libc)
 
 #include "asm-syntax.h"
 #ifndef MEMSET
diff --git a/sysdeps/x86_64/multiarch/memset.S b/sysdeps/x86_64/multiarch/memset.S
index 00d46d12d0..61868c7012 100644
--- a/sysdeps/x86_64/multiarch/memset.S
+++ b/sysdeps/x86_64/multiarch/memset.S
@@ -23,7 +23,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-# ifndef NOT_IN_libc
+# if IS_IN (libc)
 ENTRY(memset)
 	.type	memset, @gnu_indirect_function
 	cmpl	$0, __cpu_features+KIND_OFFSET(%rip)
@@ -37,7 +37,7 @@ ENTRY(memset)
 END(memset)
 # endif
 
-# if !defined NOT_IN_libc
+# if IS_IN (libc)
 #  undef memset
 #  define memset __memset_sse2
 
diff --git a/sysdeps/x86_64/multiarch/memset_chk.S b/sysdeps/x86_64/multiarch/memset_chk.S
index 8a607bd6b7..7528a422d8 100644
--- a/sysdeps/x86_64/multiarch/memset_chk.S
+++ b/sysdeps/x86_64/multiarch/memset_chk.S
@@ -21,7 +21,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in lib.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # if defined SHARED && defined HAVE_AVX2_SUPPORT
 ENTRY(__memset_chk)
 	.type	__memset_chk, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
index dc782f2c23..9b8db7a786 100644
--- a/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
+++ b/sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/x86_64/multiarch/strcat-ssse3.S b/sysdeps/x86_64/multiarch/strcat-ssse3.S
index fde7b90822..9448125acb 100644
--- a/sysdeps/x86_64/multiarch/strcat-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcat-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 
diff --git a/sysdeps/x86_64/multiarch/strcat.S b/sysdeps/x86_64/multiarch/strcat.S
index d5c9d847d4..531878016f 100644
--- a/sysdeps/x86_64/multiarch/strcat.S
+++ b/sysdeps/x86_64/multiarch/strcat.S
@@ -43,7 +43,7 @@
 
 
 /* Define multiple versions only for the definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(STRCAT)
 	.type	STRCAT, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S b/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
index 0b3f0961c3..7870494b6e 100644
--- a/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
+++ b/sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef  NOT_IN_libc
+#if IS_IN (libc)
 
 # include <sysdep.h>
 # include "asm-syntax.h"
diff --git a/sysdeps/x86_64/multiarch/strchr.S b/sysdeps/x86_64/multiarch/strchr.S
index 63a35fa62f..3f247b6169 100644
--- a/sysdeps/x86_64/multiarch/strchr.S
+++ b/sysdeps/x86_64/multiarch/strchr.S
@@ -21,7 +21,7 @@
 
 
 /* Define multiple versions only for the definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(strchr)
 	.type	strchr, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strcmp-ssse3.S b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
index 43b3f300b4..1b7fa33c91 100644
--- a/sysdeps/x86_64/multiarch/strcmp-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define USE_SSSE3 1
 # define STRCMP __strcmp_ssse3
 # include "../strcmp.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp.S b/sysdeps/x86_64/multiarch/strcmp.S
index bd71714e0b..45b2186086 100644
--- a/sysdeps/x86_64/multiarch/strcmp.S
+++ b/sysdeps/x86_64/multiarch/strcmp.S
@@ -80,7 +80,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strncmp in static library since we
    need strncmp before the initialization happened.  */
-#if (defined SHARED || !defined USE_AS_STRNCMP) && !defined NOT_IN_libc
+#if (defined SHARED || !defined USE_AS_STRNCMP) && IS_IN (libc)
 	.text
 ENTRY(STRCMP)
 	.type	STRCMP, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S b/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
index be7513d480..d616d1a7e5 100644
--- a/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
+++ b/sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # ifndef USE_AS_STRCAT
 #  include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcpy-ssse3.S b/sysdeps/x86_64/multiarch/strcpy-ssse3.S
index 86569ff54a..7ca044d3be 100644
--- a/sysdeps/x86_64/multiarch/strcpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/strcpy-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 # ifndef USE_AS_STRCAT
 #  include <sysdep.h>
diff --git a/sysdeps/x86_64/multiarch/strcpy.S b/sysdeps/x86_64/multiarch/strcpy.S
index 80ed98b30a..0467b216ce 100644
--- a/sysdeps/x86_64/multiarch/strcpy.S
+++ b/sysdeps/x86_64/multiarch/strcpy.S
@@ -57,7 +57,7 @@
 
 
 /* Define multiple versions only for the definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(STRCPY)
 	.type	STRCPY, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strcspn.S b/sysdeps/x86_64/multiarch/strcspn.S
index 24f55e9579..1250dc8fb5 100644
--- a/sysdeps/x86_64/multiarch/strcspn.S
+++ b/sysdeps/x86_64/multiarch/strcspn.S
@@ -41,7 +41,7 @@
 /* Define multiple versions only for the definition in libc.  Don't
    define multiple versions for strpbrk in static library since we
    need strpbrk before the initialization happened.  */
-#if (defined SHARED || !defined USE_AS_STRPBRK) && !defined NOT_IN_libc
+#if (defined SHARED || !defined USE_AS_STRPBRK) && IS_IN (libc)
 	.text
 ENTRY(STRCSPN)
 	.type	STRCSPN, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/strspn.S b/sysdeps/x86_64/multiarch/strspn.S
index bf7308eade..66309266e3 100644
--- a/sysdeps/x86_64/multiarch/strspn.S
+++ b/sysdeps/x86_64/multiarch/strspn.S
@@ -26,7 +26,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc.  */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(strspn)
 	.type	strspn, @gnu_indirect_function
diff --git a/sysdeps/x86_64/multiarch/wcscpy-c.c b/sysdeps/x86_64/multiarch/wcscpy-c.c
index f27c069198..a51a83a9be 100644
--- a/sysdeps/x86_64/multiarch/wcscpy-c.c
+++ b/sysdeps/x86_64/multiarch/wcscpy-c.c
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # define wcscpy  __wcscpy_sse2
 #endif
 
diff --git a/sysdeps/x86_64/multiarch/wcscpy-ssse3.S b/sysdeps/x86_64/multiarch/wcscpy-ssse3.S
index c79389ec3b..5b188ac46e 100644
--- a/sysdeps/x86_64/multiarch/wcscpy-ssse3.S
+++ b/sysdeps/x86_64/multiarch/wcscpy-ssse3.S
@@ -17,7 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <sysdep.h>
 
 	.section .text.ssse3,"ax",@progbits
diff --git a/sysdeps/x86_64/multiarch/wcscpy.S b/sysdeps/x86_64/multiarch/wcscpy.S
index f12ba27d60..43ffe6df00 100644
--- a/sysdeps/x86_64/multiarch/wcscpy.S
+++ b/sysdeps/x86_64/multiarch/wcscpy.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 
 	.text
 ENTRY(wcscpy)
diff --git a/sysdeps/x86_64/multiarch/wmemcmp-c.c b/sysdeps/x86_64/multiarch/wmemcmp-c.c
index 1074238daf..46b6715e18 100644
--- a/sysdeps/x86_64/multiarch/wmemcmp-c.c
+++ b/sysdeps/x86_64/multiarch/wmemcmp-c.c
@@ -1,4 +1,4 @@
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 # include <wchar.h>
 
 # define WMEMCMP  __wmemcmp_sse2
diff --git a/sysdeps/x86_64/multiarch/wmemcmp.S b/sysdeps/x86_64/multiarch/wmemcmp.S
index 37b9bbaeea..c5b211d786 100644
--- a/sysdeps/x86_64/multiarch/wmemcmp.S
+++ b/sysdeps/x86_64/multiarch/wmemcmp.S
@@ -22,7 +22,7 @@
 #include <init-arch.h>
 
 /* Define multiple versions only for the definition in libc. */
-#ifndef NOT_IN_libc
+#if IS_IN (libc)
 	.text
 ENTRY(wmemcmp)
 	.type	wmemcmp, @gnu_indirect_function
diff --git a/sysdeps/x86_64/strcmp.S b/sysdeps/x86_64/strcmp.S
index fc45a620ac..b022a04ff7 100644
--- a/sysdeps/x86_64/strcmp.S
+++ b/sysdeps/x86_64/strcmp.S
@@ -32,7 +32,7 @@
 /* The simplified code below is not set up to handle strncmp() so far.
    Should this become necessary it has to be implemented.  For now
    just report the problem.  */
-# ifdef NOT_IN_libc
+# if !IS_IN (libc)
 #  error "strncmp not implemented so far"
 # endif
 
@@ -51,7 +51,7 @@
 # include "locale-defines.h"
 
 /* No support for strcasecmp outside libc so far since it is not needed.  */
-# ifdef NOT_IN_libc
+# if !IS_IN (libc)
 #  error "strcasecmp_l not implemented so far"
 # endif
 
@@ -60,7 +60,7 @@
 # include "locale-defines.h"
 
 /* No support for strncasecmp outside libc so far since it is not needed.  */
-# ifdef NOT_IN_libc
+# if !IS_IN (libc)
 #  error "strncasecmp_l not implemented so far"
 # endif
 
@@ -126,7 +126,7 @@ libc_hidden_def (__strncasecmp)
 #endif
 
 ENTRY (STRCMP)
-#ifdef NOT_IN_libc
+#if !IS_IN (libc)
 /* Simple version since we can't use SSE registers in ld.so.  */
 L(oop):	movb	(%rdi), %al
 	cmpb	(%rsi), %al
@@ -144,7 +144,7 @@ L(neq):	movl	$1, %eax
 	cmovbl	%ecx, %eax
 	ret
 END (STRCMP)
-#else	/* NOT_IN_libc */
+#else	/* !IS_IN (libc) */
 # ifdef USE_AS_STRCASECMP_L
 	/* We have to fall back on the C implementation for locales
 	   with encodings not matching ASCII for single bytes.  */
@@ -2300,5 +2300,5 @@ LABEL(unaligned_table):
 	.int	LABEL(ashr_14) - LABEL(unaligned_table)
 	.int	LABEL(ashr_15) - LABEL(unaligned_table)
 	.int	LABEL(ashr_0) - LABEL(unaligned_table)
-#endif /* NOT_IN_libc */
+#endif /* !IS_IN (libc) */
 libc_hidden_builtin_def (STRCMP)