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authorUlrich Drepper <drepper@redhat.com>2002-02-07 17:54:45 +0000
committerUlrich Drepper <drepper@redhat.com>2002-02-07 17:54:45 +0000
commitd555194cb3d236bda07fa9ef08f4f7020421763a (patch)
treefcd827d43fd1fb19dd29e7f8c44f92396a95301d /configure.in
parentd4468ab7887325daf8bcdc8d7591238f3adcc70b (diff)
downloadglibc-d555194cb3d236bda07fa9ef08f4f7020421763a.tar.gz
Update.
2002-02-07 Andreas Schwab <schwab@suse.de> * configure.in: Fix check for -zcombreloc. 2002-02-06 H.J. Lu <hjl@gnu.org> * config.h.in (HAVE_BUILTIN_MEMSET): New. * configure.in: Check if __builtin_memset really works. * elf/rtld.c (_dl_start): Check HAVE_BUILTIN_MEMSET instead of __GNUC_PREREQ (2, 96) before using __builtin_memset. 2002-02-06 Jakub Jelinek <jakub@redhat.com> * io/bug-ftw3.c (main): Don't try the test if root. 2002-02-06 Martin Schwidefsky <schwidefsky@de.ibm.com> * sysdeps/unix/sysv/linux/s390/brk.c (__brk): Correct inline assembly constraints. * sysdeps/unix/sysv/linux/s390/s390-32/bits/resource.h (RLIMIT_LOCKS): Add RLIMIT_LOCKS and adjust RLIMIT_NLIMITS. * sysdeps/unix/sysv/linux/s390/s390-64/bits/resource.h (RLIMIT_LOCKS): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S (clone): Make clone a weak alias for __clone. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S (clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/profil-counter.h: Fix typo. * sysdeps/unix/sysv/linux/s390/s390-64/Makefile: Add framestate. * sysdeps/unix/sysv/linux/s390/s390-64/Versions: New file. * sysdeps/unix/sysv/linux/s390/s390-64/mmap.S (__mmap64): Make __mmap a weak alias for __mmap64. * sysdeps/mips/atomicity.h (exchange_and_add): Not use branch likely. * sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Likewise. * sysdeps/generic/dl-tls.c: Don't read TLS header if TLS is not needed.
Diffstat (limited to 'configure.in')
-rw-r--r--configure.in24
1 files changed, 22 insertions, 2 deletions
diff --git a/configure.in b/configure.in
index 5299146cdd..9c627c5611 100644
--- a/configure.in
+++ b/configure.in
@@ -1065,8 +1065,9 @@ EOF
AC_CACHE_CHECK(for -z combreloc,
libc_cv_z_combreloc, [dnl
cat > conftest.c <<EOF
-extern int bar (void);
-int foo (void) { return bar (); }
+extern int bar (int);
+extern int mumble;
+int foo (void) { return bar (mumble); }
EOF
if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c
-nostdlib -nostartfiles
@@ -1398,6 +1399,25 @@ if test "$libc_cv_gcc_builtin_expect" = yes; then
AC_DEFINE(HAVE_BUILTIN_EXPECT)
fi
+AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
+cat > conftest.c <<\EOF
+void zero (void *x)
+{
+ __builtin_memset (x, 0, 4);
+}
+EOF
+dnl
+if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]);
+then
+ libc_cv_gcc_builtin_memset=no
+else
+ libc_cv_gcc_builtin_memset=yes
+fi
+rm -f conftest* ])
+if test "$libc_cv_gcc_builtin_memset" = yes ; then
+ AC_DEFINE(HAVE_BUILTIN_MEMSET)
+fi
+
dnl Check whether the compiler supports subtraction of local labels.
AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
[cat > conftest.c <<EOF