mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 06:10:10 +00:00
0b25c28e02
All fixes are in comments, so the binaries should be identical before/after this commit, but I can't verify this. Reviewed-by: Rajalakshmi Srinivasaraghavan <rajis@linux.ibm.com>
46 lines
1.5 KiB
Plaintext
46 lines
1.5 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
# Local configure fragment for sysdeps/powerpc/powerpc64.
|
|
|
|
AC_DEFINE(HIDDEN_VAR_NEEDS_DYNAMIC_RELOC)
|
|
|
|
AC_CACHE_CHECK(for support for overlapping .opd entries,
|
|
libc_cv_overlapping_opd, [dnl
|
|
libc_cv_overlapping_opd=no
|
|
echo 'void foo (void) {}' > conftest.c
|
|
if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
changequote(,)dnl
|
|
if grep '\.TOC\.@tocbase' conftest.s > /dev/null; then
|
|
if grep '\.TOC\.@tocbase[ ]*,[ ]*0' conftest.s > /dev/null; then
|
|
:
|
|
else
|
|
libc_cv_overlapping_opd=yes
|
|
fi
|
|
fi
|
|
changequote([,])dnl
|
|
fi
|
|
rm -f conftest.c conftest.s
|
|
])
|
|
if test x$libc_cv_overlapping_opd = xyes; then
|
|
AC_DEFINE(USE_PPC64_OVERLAPPING_OPD)
|
|
fi
|
|
|
|
# We check if compiler supports @notoc generation since there is no
|
|
# gain by enabling it if it will be optimized away by the linker.
|
|
# It also helps linkers that might not optimize it and end up
|
|
# generating stubs with ISA 3.1 instruction even targeting older ISA.
|
|
AC_CACHE_CHECK([if the compiler supports @notoc],
|
|
libc_cv_ppc64_notoc, [dnl
|
|
cat > conftest.c <<EOF
|
|
int bar (void);
|
|
int foo (void) { return bar () + 1; }
|
|
EOF
|
|
libc_cv_ppc64_notoc=no
|
|
if AC_TRY_COMMAND([${CC-cc} $libc_cv_cc_submachine $CFLAGS $CPPFLAGS -S -o conftest.s conftest.c]) \
|
|
&& AC_TRY_COMMAND([grep -q -E 'bar@notoc' conftest.s])
|
|
then
|
|
libc_cv_ppc64_notoc=yes
|
|
fi
|
|
rm -rf conftest.*])
|
|
AS_IF([test x$libc_cv_ppc64_notoc = xyes],
|
|
[AC_DEFINE(USE_PPC64_NOTOC)])
|