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Implement a proper configure test for AltiVec vector declaration syntax. 

Originally committed as revision 13555 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun 2008-05-30 10:58:48 +00:00
parent 81a5cdde80
commit b006b26c83
2 changed files with 11 additions and 4 deletions
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8
configure vendored
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@ -714,6 +714,7 @@ HAVE_LIST="
$ARCH_EXT_LIST $ARCH_EXT_LIST
$THREADS_LIST $THREADS_LIST
altivec_h altivec_h
altivec_vector_braces
arpa_inet_h arpa_inet_h
bswap bswap
byteswap_h byteswap_h
@ -1542,6 +1543,13 @@ int main(void) {
v1 = vec_add(v2,v3); v1 = vec_add(v2,v3);
return 0; return 0;
} }
EOF
# check if our compiler supports braces for vector declarations
check_cc <<EOF && enable altivec_vector_braces
$inc_altivec_h
#define AVV(x...) {x}
int main (void) { (vector int) AVV(1); return 0; }
EOF EOF
fi fi

7
libavutil/internal.h
View File

@ -50,11 +50,10 @@
#endif #endif
#endif #endif
/* Use Apple-specific AltiVec syntax for vector declarations when necessary. */ #ifdef HAVE_ALTIVEC_VECTOR_BRACES
#ifdef __APPLE_CC__
#define AVV(x...) (x)
#else
#define AVV(x...) {x} #define AVV(x...) {x}
#else
#define AVV(x...) (x)
#endif #endif
#ifndef M_PI #ifndef M_PI