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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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4
configure.in
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@ -459,12 +459,14 @@ AC_HELP_STRING([--enable-3dnow], [use MMX assembly routines [[default=yes]]]),
amd3dnow_CFLAGS="-m3dnow"
CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS"
AC_TRY_COMPILE([
AC_TRY_LINK([
#include <mm3dnow.h>
#ifndef __3dNOW__
#error Assembler CPP flag not enabled
#endif
],[
void *p = 0;
_m_prefetch(p);
],[
have_gcc_3dnow=yes
])