blob: 44f53a57a034a3d592687f21d9b312ea281bebf0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/i386.
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
|
