altivec build tidyup patch by (Brian Foley <bfoley at compsoc dot nuigalway dot ie>)

Originally committed as revision 898 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 30 insertions, 0 deletions

diff --git a/configure b/configure
index 1f94134263..39342a1c40 100755
--- a/configure
+++ b/configure
@@ -25,6 +25,7 @@ make="make"
 strip="strip"
 cpu=`uname -m`
 mmx="default"
+altivec="default"
 case "$cpu" in
   i386|i486|i586|i686|i86pc|BePC)
     cpu="x86"
@@ -161,6 +162,8 @@ for opt do
   ;;
   --disable-mmx) mmx="no"
   ;;
+  --disable-altivec) altivec="no"
+  ;;
   --enable-gprof) gprof="yes"
   ;;
   --disable-v4l) v4l="no"
@@ -201,6 +204,27 @@ if test $mmx = "default"; then
     fi
 fi
 
+# Can only do AltiVec on PowerPC
+if test $altivec = "default"; then
+    if test $cpu = "powerpc"; then
+        altivec="yes"
+    else
+        altivec="no"
+    fi
+fi
+
+# See does our compiler support Motorola AltiVec C API
+if test $altivec = "yes"; then
+cat > $TMPC << EOF
+int main(void) {
+    vector signed int v1, v2, v3;
+    v1 = vec_add(v2,v3);
+    return 0;
+}
+EOF
+$cc -o $TMPO $TMPC -faltivec 2> /dev/null || altivec="no"
+fi
+
 # Checking for CFLAGS
 if test -z "$CFLAGS"; then
     CFLAGS="-O3"
@@ -324,6 +348,7 @@ echo "  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]"
 echo "  --extra-libs=ELIBS       add ELIBS [$ELIBS]"
 echo "  --cpu=CPU                force cpu to CPU  [$cpu]"
 echo "  --disable-mmx            disable mmx usage"
+echo "  --disable-altivec        disable AltiVec usage"
 echo "  --disable-audio-oss      disable OSS audio support [default=no]"
 echo "  --disable-v4l            disable video4linux grabbing [default=no]"
 echo "  --disable-network        disable network support [default=no]"
@@ -345,6 +370,7 @@ echo "make             $make"
 echo "CPU              $cpu"
 echo "Big Endian       $bigendian"
 echo "MMX enabled      $mmx"
+echo "AltiVec enabled  $altivec"
 echo "gprof enabled    $gprof"
 echo "zlib enabled     $zlib"
 echo "mp3lame enabled  $mp3lame"
@@ -391,6 +417,10 @@ if test "$mmx" = "yes" ; then
   echo "TARGET_MMX=yes" >> config.mak
   echo "#define HAVE_MMX 1" >> $TMPH
 fi
+if test "$altivec" = "yes" ; then
+  echo "TARGET_ALTIVEC=yes" >> config.mak
+  echo "#define HAVE_ALTIVEC 1" >> $TMPH
+fi
 if test "$gprof" = "yes" ; then
   echo "TARGET_GPROF=yes" >> config.mak
   echo "#define HAVE_GPROF 1" >> $TMPH