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50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
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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AC_HEADER_CHECK([cpuid.h], ,
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[AC_MSG_ERROR([gcc must provide the <cpuid.h> header])])
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AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp,
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libc_cv_cpp_asm_debuginfo, [dnl
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cat > conftest.S <<EOF
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#include "confdefs.h"
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/* comment on
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two lines */
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${libc_cv_dot_text}
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${libc_cv_asm_global_directive} foo
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foo:
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/* Unfortunately this test only works for a real instruction,
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not for any of the machine-independent pseudo-ops.
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So we just have to assume everybody has a "nop". */
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nop
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/* comment */
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nop
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/* comment */
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nop
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EOF
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if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && {
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ac_pattern='conftest\.S'
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AC_TRY_COMMAND([readelf --debug-dump=line conftest.o |
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grep $ac_pattern 1>&AS_MESSAGE_LOG_FD])
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}; then
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libc_cv_cpp_asm_debuginfo=yes
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else
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libc_cv_cpp_asm_debuginfo=no
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fi
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rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo)
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if test $libc_cv_cpp_asm_debuginfo = yes; then
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AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO)
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fi
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dnl Check if -msse4 works.
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AC_CACHE_CHECK(for SSE4 support, libc_cv_cc_sse4, [dnl
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if AC_TRY_COMMAND([${CC-cc} -msse4 -xc /dev/null -S -o /dev/null]); then
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libc_cv_cc_sse4=yes
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else
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libc_cv_cc_sse4=no
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fi])
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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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