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Fixed 3DNow! detection for clang llvm

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This commit is contained in:
Sam Lantinga 2012-09-20 21:16:02 -07:00
parent 1c3d9891d2
commit ad908fa0de
2 changed files with 8 additions and 3 deletions
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7
configure vendored
View file

@ -17219,17 +17219,20 @@ int
main () main ()
{ {
void *p = 0;
_m_prefetch(p);
; ;
return 0; return 0;
} }
_ACEOF _ACEOF
if ac_fn_c_try_compile "$LINENO"; then : if ac_fn_c_try_link "$LINENO"; then :
have_gcc_3dnow=yes have_gcc_3dnow=yes
fi fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gcc_3dnow" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_gcc_3dnow" >&5
$as_echo "$have_gcc_3dnow" >&6; } $as_echo "$have_gcc_3dnow" >&6; }
CFLAGS="$save_CFLAGS" CFLAGS="$save_CFLAGS"

4
configure.in
View file

@ -459,12 +459,14 @@ AC_HELP_STRING([--enable-3dnow], [use MMX assembly routines [[default=yes]]]),
amd3dnow_CFLAGS="-m3dnow" amd3dnow_CFLAGS="-m3dnow"
CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS" CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS"
AC_TRY_COMPILE([ AC_TRY_LINK([
#include <mm3dnow.h> #include <mm3dnow.h>
#ifndef __3dNOW__ #ifndef __3dNOW__
#error Assembler CPP flag not enabled #error Assembler CPP flag not enabled
#endif #endif
],[ ],[
void *p = 0;
_m_prefetch(p);
],[ ],[
have_gcc_3dnow=yes have_gcc_3dnow=yes
]) ])