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authorMans Rullgard <mans@mansr.com>2012-08-16 00:10:33 +0100
committerMans Rullgard <mans@mansr.com>2012-08-16 23:15:38 +0100
commit20bcce507aa6b9c866e34eee75d80305109767a8 (patch)
treeda81ed381184ac7ba106543bd8b04a012272db2c /configure
parent962e912a496dd868055291a4e1e9902e6fb2b245 (diff)
downloadffmpeg-20bcce507aa6b9c866e34eee75d80305109767a8.tar.gz
configure: clean up Altivec detection
There used to be one test for Altivec intrinsics support and a separate test to determine which of two possible syntaxes to use for vector literals. Since 2008, we only support the more common of these so the split test no longer makes sense. This combines the tests into one and also changes the hard error on failure to a warning. The test can reasonably fail if no --cpu flag is provided (or is provided with an unknown CPU) and the compiler default target does not support Altivec. Aborting in this case is probably over-reacting. Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure11
1 files changed, 4 insertions, 7 deletions
diff --git a/configure b/configure
index 6622b24770..18f81e4d31 100755
--- a/configure
+++ b/configure
@@ -2875,17 +2875,14 @@ elif enabled ppc; then
check_cc <<EOF || disable altivec
$inc_altivec_h
int main(void) {
- vector signed int v1, v2, v3;
- v1 = vec_add(v2,v3);
+ vector signed int v1 = (vector signed int) { 0 };
+ vector signed int v2 = (vector signed int) { 1 };
+ v1 = vec_add(v1, v2);
return 0;
}
EOF
- # check if our compiler supports braces for vector declarations
- check_cc <<EOF || die "You need a compiler that supports {} in AltiVec vector declarations."
-$inc_altivec_h
-int main (void) { (vector int) {1}; return 0; }
-EOF
+ enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
fi
elif enabled sparc; then