1 files changed, 96 insertions, 15 deletions
diff --git a/extra/ffmpeg/PKGBUILD b/extra/ffmpeg/PKGBUILD
index 7c2a7aed..53170066 100644
--- a/extra/ffmpeg/PKGBUILD
+++ b/extra/ffmpeg/PKGBUILD
@@ -1,3 +1,20 @@
+# disable LTO (breaks with too few registers in error: 'asm' operand has impossible constraints
+eval "$(
+declare -f build | \
+  sed '
+	s/--enable-lto/--disable-lto/
+  '
+)"
+
+# also disable mfx - libmfx does not compile
+depends=(${depends[@]//libmfx/})
+eval "$(
+  declare -f build | \
+    sed '
+      s/--enable-libmfx/--disable-libmfx/
+    '
+)"
+
 # no vamf for non-pentium4
 if [ "$CARCH" == 'i686' ] || [ "$CARCH" == 'i486' ]; then
   depends=(${depends[@]//vmaf/})
@@ -30,22 +47,86 @@ if [ "$CARCH" == 'i486' ]; then
   eval "$(
     declare -f build | \
       sed '
-        s/-enable-avisynth/--disable-avisynth/
+        s/--enable-avisynth/--disable-avisynth/
+      '
+  )"
+fi
+
+# no rav1e on i486, no Rust (yet)
+if [ "$CARCH" == 'i486' ]; then
+  depends=(${depends[@]//librav1e.so/})
+  eval "$(
+    declare -f build | \
+      sed '
+        s@--enable-librav1e@--disable-librav1e@
+      '
+  )"
+fi
+
+# svt-av1 is 64-bit only
+depends=(${depends[@]//svt-av1/})
+eval "$(
+  declare -f build | \
+    sed '
+      s@--enable-libsvtav1@--disable-libsvtav1@
+    '
+)"
+
+# -latomic on i486
+if [ "$CARCH" == 'i486' ]; then
+  depends=(${depends[@]//librav1e.so/})
+  eval "$(
+    declare -f build | \
+      sed '
+        s@make[^ ]@make EXTRALIBS-ffmpeg=-latomic EXTRALIBS-ffplay=-latomic EXTRALIBS-ffprobe=-latomic@
+      '
+  )"
+fi
+
+# disable all modern optimizations
+eval "$(
+  declare -f build | \
+    sed '
+      s|./configure|./configure --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --disable-mmxext --disable-avx --disable-avx2 --disable-avx512|
+    '
+)"
+# disabled specific assembly per subarchitecture
+if [ "$CARCH" == 'i486' ]; then
+  eval "$(
+    declare -f build | \
+      sed '
+        s|./configure|./configure --disable-sse --disable-sse2 --disable-mmx|
+      '
+  )"
+fi
+if [ "$CARCH" == 'i686' ]; then
+  eval "$(
+    declare -f build | \
+      sed '
+        s|./configure|./configure --disable-sse --disable-mmx|
+      '
+  )"
+fi
+
+# see FS32#239, basically everything breaks otherwise
+eval "$(
+  declare -f build | \
+    sed '
+      s|./configure|./configure --disable-asm|
+    '
+)"
+
+# see FS32#239, x264 and i486 result in missing symbols, no clue
+if [ "$CARCH" == 'i486' ]; then
+  eval "$(
+    declare -f build | \
+      sed '
+        s|--enable-libx264|--disable-libx264|
       '
   )"
 fi
 
-# still required dependencies on i486:
-# sdl2
-# - ibus
-#   - gtk3
-#   - libnotify
-#   - python-gobject
-#   - gtk2
-#   - qt5-base
-#   - unicode-cldr
-# - fcitx
-# v4l-utils
-# - qt5-base
-#   - mariadb-libs
-#   - qtk3
+# no Rust and librsvg on i486 (for now), use librsvg-og instead
+if [ "$CARCH" == 'i486' ]; then
+  makedepends+=(librsvg-og)
+fi