2005-01-05 09:39:54 +00:00
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/i386.
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2012-03-07 20:51:54 +00:00
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AC_CHECK_HEADER([cpuid.h], ,
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[AC_MSG_ERROR([gcc must provide the <cpuid.h> header])],
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[/* No default includes. */])
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2009-08-02 10:38:44 -07:00
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2009-07-03 02:48:56 -07:00
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dnl Check if -msse4 works.
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AC_CACHE_CHECK(for SSE4 support, libc_cv_cc_sse4, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-msse4], [libc_cv_cc_sse4=yes], [libc_cv_cc_sse4=no])
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])
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2009-07-03 02:48:56 -07:00
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if test $libc_cv_cc_sse4 = yes; then
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AC_DEFINE(HAVE_SSE4_SUPPORT)
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fi
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2010-03-04 21:30:17 -08:00
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dnl Check if -Wa,-mtune=i686 works.
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AC_CACHE_CHECK(for assembler -mtune=i686 support, libc_cv_as_i686, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-Wa,-mtune=i686],
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[libc_cv_as_i686=yes],
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[libc_cv_as_i686=no])
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])
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2010-04-14 22:27:59 -07:00
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dnl Check if -mavx works.
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AC_CACHE_CHECK(for AVX support, libc_cv_cc_avx, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-mavx], [libc_cv_cc_avx=yes], [libc_cv_cc_avx=no])
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])
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2010-04-14 22:27:59 -07:00
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if test $libc_cv_cc_avx = yes; then
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AC_DEFINE(HAVE_AVX_SUPPORT)
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fi
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2011-02-02 19:28:44 -05:00
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2012-01-28 14:48:46 -05:00
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dnl Check if -msse2avx works.
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AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-msse2avx],
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[libc_cv_cc_sse2avx=yes],
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[libc_cv_cc_sse2avx=no])
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])
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2012-01-28 14:48:46 -05:00
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if test $libc_cv_cc_sse2avx = yes; then
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AC_DEFINE(HAVE_SSE2AVX_SUPPORT)
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fi
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2011-10-20 22:43:15 -04:00
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dnl Check if -mfma4 works.
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AC_CACHE_CHECK(for FMA4 support, libc_cv_cc_fma4, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-mfma4], [libc_cv_cc_fma4=yes], [libc_cv_cc_fma4=no])
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])
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2011-10-20 22:43:15 -04:00
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if test $libc_cv_cc_fma4 = yes; then
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AC_DEFINE(HAVE_FMA4_SUPPORT)
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fi
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2011-02-02 19:28:44 -05:00
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dnl Check if -mno-vzeroupper works.
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AC_CACHE_CHECK(for -mno-vzeroupper support, libc_cv_cc_novzeroupper, [dnl
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2012-03-21 16:33:57 +00:00
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LIBC_TRY_CC_OPTION([-mno-vzeroupper],
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[libc_cv_cc_novzeroupper=yes],
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[libc_cv_cc_novzeroupper=no])
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])
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2012-03-19 21:00:15 +01:00
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dnl It is always possible to access static and hidden symbols in an
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dnl position independent way.
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AC_DEFINE(PI_STATIC_AND_HIDDEN)
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