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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/s390.
# Check for support of thread-local storage handling in assembler and
# linker.
AC_CACHE_CHECK(for s390 TLS support, libc_cv_390_tls, [dnl
cat > conftest.S <<\EOF
.section ".tdata", "awT", @progbits
foo: .long 25
.text
.quad foo@TLSGD
.quad foo@TLSLDM
.quad foo@DTPOFF
.quad foo@NTPOFF
.quad foo@GOTNTPOFF
.quad foo@INDNTPOFF
lg %r1,foo@GOTNTPOFF(%r12)
lg %r1,0(%r1):tls_load:foo
brasl %r14,__tls_get_offset@plt:tls_gdcall:foo
brasl %r14,__tls_get_offset@plt:tls_ldcall:foo
EOF
dnl
if AC_TRY_COMMAND(${CC-cc} -S $CFLAGS conftest.S 1>&AS_MESSAGE_LOG_FD); then
libc_cv_390_tls=yes
else
libc_cv_390_tls=no
fi
rm -f conftest*])
if test $libc_cv_390_tls = no; then
AC_MSG_ERROR([the assembler must support TLS])
fi
dnl It is always possible to access static and hidden symbols in an
dnl position independent way.
AC_DEFINE(PI_STATIC_AND_HIDDEN)
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