mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-13 00:30:07 +00:00
77 lines
2.1 KiB
Plaintext
77 lines
2.1 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
|
|
# Local configure fragment for sysdeps/i386.
|
|
|
|
AC_HEADER_CHECK([cpuid.h], ,
|
|
[AC_MSG_ERROR([gcc must provide the <cpuid.h> header])])
|
|
|
|
AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp,
|
|
libc_cv_cpp_asm_debuginfo, [dnl
|
|
cat > conftest.S <<EOF
|
|
#include "confdefs.h"
|
|
|
|
/* comment on
|
|
two lines */
|
|
${libc_cv_dot_text}
|
|
${libc_cv_asm_global_directive} foo
|
|
foo:
|
|
/* Unfortunately this test only works for a real instruction,
|
|
not for any of the machine-independent pseudo-ops.
|
|
So we just have to assume everybody has a "nop". */
|
|
nop
|
|
/* comment */
|
|
nop
|
|
/* comment */
|
|
nop
|
|
EOF
|
|
if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && {
|
|
ac_pattern='conftest\.S'
|
|
AC_TRY_COMMAND([readelf --debug-dump=line conftest.o |
|
|
grep $ac_pattern 1>&AS_MESSAGE_LOG_FD])
|
|
}; then
|
|
libc_cv_cpp_asm_debuginfo=yes
|
|
else
|
|
libc_cv_cpp_asm_debuginfo=no
|
|
fi
|
|
rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo)
|
|
if test $libc_cv_cpp_asm_debuginfo = yes; then
|
|
AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO)
|
|
fi
|
|
|
|
dnl Check if -msse4 works.
|
|
AC_CACHE_CHECK(for SSE4 support, libc_cv_cc_sse4, [dnl
|
|
if AC_TRY_COMMAND([${CC-cc} -msse4 -xc /dev/null -S -o /dev/null]); then
|
|
libc_cv_cc_sse4=yes
|
|
else
|
|
libc_cv_cc_sse4=no
|
|
fi])
|
|
if test $libc_cv_cc_sse4 = yes; then
|
|
AC_DEFINE(HAVE_SSE4_SUPPORT)
|
|
fi
|
|
|
|
dnl Check if -Wa,-mtune=i686 works.
|
|
AC_CACHE_CHECK(for assembler -mtune=i686 support, libc_cv_as_i686, [dnl
|
|
if AC_TRY_COMMAND([${CC-cc} -Wa,-mtune=i686 -xc /dev/null -S -o /dev/null]); then
|
|
libc_cv_as_i686=yes
|
|
else
|
|
libc_cv_as_i686=no
|
|
fi])
|
|
|
|
dnl Check if -mavx works.
|
|
AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
|
|
if AC_TRY_COMMAND([${CC-cc} -mavx -xc /dev/null -S -o /dev/null]); then
|
|
libc_cv_cc_avx=yes
|
|
else
|
|
libc_cv_cc_avx=no
|
|
fi])
|
|
if test $libc_cv_cc_avx = yes; then
|
|
AC_DEFINE(HAVE_AVX_SUPPORT)
|
|
fi
|
|
|
|
dnl Check if -mno-vzeroupper works.
|
|
AC_CACHE_CHECK(for -mno-vzeroupper support, libc_cv_cc_novzeroupper, [dnl
|
|
if AC_TRY_COMMAND([${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null]); then
|
|
libc_cv_cc_novzeroupper=yes
|
|
else
|
|
libc_cv_cc_novzeroupper=no
|
|
fi])
|