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

diff --git a/sysdeps/x86_64/configure.in b/sysdeps/x86_64/configure.in
index c53328b..5874c9a 100644 (file)
--- a/sysdeps/x86_64/configure.in
+++ b/sysdeps/x86_64/configure.in
@@ -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
\ No newline at end of file