[x264-devel] patch for configure on ppc osx + gcc16

[Andrew Randrianasulu]

Hello!

We were testing ppcports overlay on my newly acquired ppc powermac, and
x264 was failing  out of the box

I think I fixed that (new gcc does not support -fastf) and discovered there
was vsx enable/disable switch for configure.

Now it displays vsx status in configure summary, and sets vsx to no if
MACOSX (as far as I understand there never was OSX for those powerpc64le
machines where VSX exist). Without disabling vsx build was failing in this
case.

for working altivec we seems to need two more patches, one uncommited from
x264 merge request, another from some linux distro.

https://github.com/macos-powerpc/powerpc-ports/tree/main/multimedia/x264
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diff --git a/configure b/configure
index d1d0a471..aecb350b 100755
--- a/configure
+++ b/configure
@@ -38,6 +38,7 @@ Configuration options:
 
 Advanced options:
   --disable-asm            disable platform-specific assembly optimizations
+  --disable-vsx            disable VSX asm
   --enable-lto             enable link-time optimization
   --enable-debug           add -g
   --enable-gprof           add -pg
@@ -675,6 +676,8 @@ case $host_os in
     darwin*)
         SYS="MACOSX"
         libm="-lm"
+        vsx="no"
+        cc_check "" -fastf && CFLAGS="$CFLAGS -fastf"
         if [ "$pic" = "no" ]; then
             cc_check "" -mdynamic-no-pic && CFLAGS="$CFLAGS -mdynamic-no-pic"
         fi
@@ -822,7 +825,7 @@ case $host_cpu in
             AS="${AS-${CC}}"
             AS_EXT=".c"
             if [ $SYS = MACOSX ] ; then
-                CFLAGS="$CFLAGS -faltivec -fastf -mcpu=G4"
+                CFLAGS="$CFLAGS -faltivec -mcpu=G4"
             else
                 CFLAGS="$CFLAGS -maltivec -mabi=altivec"
                 define HAVE_ALTIVEC_H
@@ -1743,6 +1746,7 @@ shared:         $shared
 static:         $static
 bashcompletion: $bashcompletion
 asm:            $asm
+vsx             $vsx
 interlaced:     $interlaced
 avs:            $avs
 lavf:           $lavf