Fix aarch64 build for windows and linux

.github/scripts/ffmpeg/.gitignore

@@ -1 +1 @@
-out
+out*

.github/scripts/ffmpeg/build.sh

@@ -25,8 +25,20 @@ export PKG_CONFIG_LIBDIR="${PREFIX}/lib/pkgconfig:${PREFIX}/share/pkgconfig"
 
 case "$TARGET" in
   *linux*)
-    export CFLAGS="-I${PREFIX}/include -pipe -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fstack-clash-protection -fvisibility=hidden"
-    export LDFLAGS="-L${PREFIX}/lib -pipe -fstack-protector-strong -fstack-clash-protection -Wl,-z,relro,-z,now"
+    export CFLAGS="-I${PREFIX}/include -pipe -D_FORTIFY_SOURCE=1 -fvisibility=hidden"
+    export LDFLAGS="-L${PREFIX}/lib -pipe -Wl,-z,relro,-z,now"
+
+    case "$TARGET" in
+      x86_64*)
+        export CFLAGS="${CFLAGS} -fstack-protector-strong -fstack-clash-protection"
+        export LDFLAGS="${LDFLAGS} -fstack-protector-strong -fstack-clash-protection"
+        ;;
+      aarch64*)
+        # https://github.com/ziglang/zig/issues/17430#issuecomment-1752592338
+        export CFLAGS="${CFLAGS} -fno-stack-protector -fno-stack-check"
+        export LDFLAGS="${LDFLAGS} -fno-stack-protector -fno-stack-check"
+    esac
+
     export CXXFLAGS="$CFLAGS"
     export SHARED_FLAGS="${CFLAGS:-} -fno-semantic-interposition"
     ;;

.github/scripts/ffmpeg/scripts/20-bzip2.sh

@@ -3,7 +3,7 @@
 echo "Download bzip2..."
 mkdir -p bzip2
 
-curl_tar 'https://gitlab.com/bzip2/bzip2/-/archive/66c46b8c9436613fd81bc5d03f63a61933a4dcc3/bzip2-66c46b8c9436613fd81bc5d03f63a61933a4dcc3.tar.gz' bzip2 1
+curl_tar 'https://gitlab.com/bzip2/bzip2/-/archive/66c46b8c/bzip2.tar.gz' bzip2 1
 
 sed -i '/add_subdirectory(man)/d' bzip2/CMakeLists.txt
 
@@ -16,6 +16,9 @@ bak_src 'bzip2'
 mkdir -p bzip2/build
 cd bzip2/build
 
+export CFLAGS="${CFLAGS:-} -DBZ_DEBUG=0"
+export CXXFLAGS="${CXXFLAGS:-} -DBZ_DEBUG=0"
+
 echo "Build bzip2..."
 cmake \
   -DUSE_OLD_SONAME=On \

.github/scripts/ffmpeg/scripts/50-svt-av1.sh

@@ -12,8 +12,7 @@ case "$TARGET" in
   aarch64*)
     ENABLE_NASM=Off
     # Patch to enable SSE in aarch64
-    curl -LSs 'https://raw.githubusercontent.com/HandBrake/HandBrake/621a6ff/contrib/svt-av1/A01-adds-neon-sse2neon-implementations-of-SVT-AV1_v15.patch' \
-      | patch -F5 -lp1 -d svt-av1 -t
+    curl -LSs 'https://gitlab.com/AOMediaCodec/SVT-AV1/-/merge_requests/2135.patch' | patch -F5 -lp1 -d svt-av1 -t
     ;;
 esac
 

.github/scripts/ffmpeg/scripts/50-zimg.sh

@@ -19,9 +19,6 @@ cd zimg
 
 echo "Build zimg..."
 
-export CFLAGS="${CFLAGS:-} -Oz"
-export CXXFLAGS="${CFLAGS}"
-
 ./autogen.sh
 
 ./configure \

.github/scripts/ffmpeg/scripts/99-ffmpeg.sh

@@ -146,7 +146,6 @@ if ! ./configure \
   --enable-optimizations \
   --enable-postproc \
   --enable-shared \
-  --enable-small \
   --enable-swscale \
   --enable-version3 \
   --enable-vulkan \

.github/scripts/ffmpeg/zig-cc.sh

@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-case "$TARGET" in
+case "${TARGET:?TARGET envvar is required to be defined}" in
   *linux-gnu)
     # Set the glibc minimum version
     # This is the lowest we can go at the moment
@@ -19,6 +19,9 @@ case "$TARGET" in
   *windows*)
     LD='lld-link'
     ;;
+  # Mach-O (macOS) linker (ld64.lld) was dropped in favour of zig's internal linker
+  # https://github.com/ziglang/zig/commit/81bf05bf6c1249c39273b494d3e337d300b4ddd5
+  # https://github.com/ziglang/zig/commit/0e15205521b9a8c95db3c1714dffe3be1df5cda1
 esac
 
 case "$0" in
@@ -88,6 +91,12 @@ while [ "$#" -gt 0 ]; do
     if [ "$lto" != '-fno-lto' ]; then
       lto="$1"
     fi
+  elif (case "$1" in -O* | --optimize*) exit 0 ;; *) exit 1 ;; esac) then
+    # Drop optmize flags, we force -Os below
+    # This also misteriosly fix an aarch64 compiler bug in clang 16
+    # https://github.com/llvm/llvm-project/issues/47432
+    # https://github.com/llvm/llvm-project/issues/66912
+    true
   elif [ "$1" = '-xassembler' ] || [ "$1" = '--language=assembler' ]; then
     # Zig behaves very oddly when passed the explicit assembler language option
     # https://github.com/ziglang/zig/issues/10915
@@ -213,6 +222,9 @@ if [ "$help" -eq 0 ]; then
       ;;
   esac
 
+  # Like -O2 with extra optimizations to reduce code size
+  c_argv+=(-Os)
+
   # If a SDK is defined ensure it is set as sysroot if is not already set
   if [ -z "$sysroot" ] && [ -d "${SDKROOT:-}" ]; then
     c_argv+=("--sysroot=${SDKROOT}")