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Merge contents from sysdeps/i386/configure.in (without i686 check)

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This commit is contained in:
Andreas Jaeger 2012-03-19 20:58:05 +01:00
parent 9d639b9918
commit 0894643164
1 changed files with 91 additions and 2 deletions
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93
sysdeps/x86_64/configure.in
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@ -1,5 +1,94 @@
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/x86_64/elf.
# Local configure fragment for sysdeps/x86_64.
AC_CHECK_HEADER([cpuid.h], ,
[AC_MSG_ERROR([gcc must provide the <cpuid.h> header])],
[/* No default includes. */])
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 $libc_cv_cc_sse4 = yes; then
AC_DEFINE(HAVE_SSE4_SUPPORT)
fi
dnl Check if -mavx works.
AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
if AC_TRY_COMMAND([${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 $libc_cv_cc_avx = yes; then
AC_DEFINE(HAVE_AVX_SUPPORT)
fi
dnl Check if -msse2avx works.
AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl
if AC_TRY_COMMAND([${CC-cc} -msse2avx -xc /dev/null -S -o /dev/null]); then
libc_cv_cc_sse2avx=yes
else
libc_cv_cc_sse2avx=no
fi])
if test $libc_cv_cc_sse2avx = yes; then
AC_DEFINE(HAVE_SSE2AVX_SUPPORT)
fi
dnl Check if -mfma4 works.
AC_CACHE_CHECK(for FMA4 support, libc_cv_cc_fma4, [dnl
if AC_TRY_COMMAND([${CC-cc} -mfma4 -xc /dev/null -S -o /dev/null]); then
libc_cv_cc_fma4=yes
else
libc_cv_cc_fma4=no
fi])
if test $libc_cv_cc_fma4 = yes; then
AC_DEFINE(HAVE_FMA4_SUPPORT)
fi
dnl Check if -mno-vzeroupper works.
AC_CACHE_CHECK(for -mno-vzeroupper support, libc_cv_cc_novzeroupper, [dnl
if AC_TRY_COMMAND([${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null]); then
libc_cv_cc_novzeroupper=yes
else
libc_cv_cc_novzeroupper=no
fi])
# Check for support of thread-local storage handling in assembler and linker.
AC_CACHE_CHECK(for x86-64 TLS support, libc_cv_x86_64_tls, [dnl
@ -30,4 +119,4 @@ fi
dnl It is always possible to access static and hidden symbols in an
dnl position independent way.
AC_DEFINE(PI_STATIC_AND_HIDDEN)
# work around problem with autoconf and empty lines at the end of files
# work around problem with autoconf and empty lines at the end of files