Update script to build aarch64-linux

.github/scripts/build.sh

@@ -3,8 +3,38 @@ set -euo pipefail
 
 # Usage: TARGET=x86_64-pc-windows-gnu ./generate-rustflags.sh
 
+# Set linkers for cross-compilation targets using clang
+
+case "$TARGET" in
+    x86_64-unknown-linux-gnu)
+        OS=LINUX
+	EXE=radiance
+	STRIP=strip
+        export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER="gcc"
+	;;
+    aarch64-unknown-linux-gnu)
+        OS=LINUX
+	EXE=radiance
+	STRIP=aarch64-linux-gnu-strip
+        export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER="aarch64-linux-gnu-gcc"
+	;;
+    x86_64-pc-windows-gnu)
+        OS=WINDOWS
+	EXE=radiance.exe
+	STRIP=x86_64-w64-mingw32-strip
+	;;
+    *)
+        echo "Unknown TARGET" >&2
+	exit 1
+	;;
+esac
+
+LIBMPV_STATIC_BUILD="$(cd "../libmpv-static-build" && pwd)"
+
 # Set PKG_CONFIG_PATH based on target
-export PKG_CONFIG_PATH="../libmpv-static-build/${TARGET}/output/lib/pkgconfig"
+export PKG_CONFIG_LIBDIR="${LIBMPV_STATIC_BUILD}/${TARGET}/output/lib/pkgconfig"
+export PKG_CONFIG_PATH="$PKG_CONFIG_LIBDIR"
+export PKG_CONFIG_ALLOW_CROSS=1
 
 # Get all the static library dependencies
 LIBS=$(pkg-config --static --libs mpv)
@@ -23,8 +53,8 @@ for flag in $LIBS; do
 done
 
 # Platform-specific linking
-case "$TARGET" in
-  x86_64-pc-windows-gnu)
+case "$OS" in
+  WINDOWS)
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,--allow-multiple-definition"
     # Wrap all static libraries in a group to resolve circular dependencies
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bstatic"
@@ -49,22 +79,18 @@ case "$TARGET" in
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-ladvapi32"
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-lshell32"
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-lole32"
-
-    export RUSTFLAGS
-    echo "Generated RUSTFLAGS: $RUSTFLAGS"
-
-    cargo build --release --target "$TARGET"
-    x86_64-w64-mingw32-strip "target/${TARGET}/release/radiance.exe"
     ;;
-  x86_64-unknown-linux-gnu)
+  LINUX)
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bstatic"
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-lstdc++"
+    RUSTFLAGS="$RUSTFLAGS -C link-arg=-lgcc"
     RUSTFLAGS="$RUSTFLAGS -C link-arg=-Wl,-Bdynamic"
 
     # Populate /tmp/native-lib-pc with fake pkg-config files so we only dynamically link the things we want to
     rm -rf /tmp/native-lib-pc/
     mkdir -p /tmp/native-lib-pc/
 
+    # Skip linker flags for mpv since we need more fine-grained control over it
     cat <<EOF >/tmp/native-lib-pc/mpv.pc
 Name: mpv
 Description: placeholder
@@ -89,16 +115,17 @@ Cflags:
 Libs: -lasound
 EOF
 
-    export RUSTFLAGS
-    echo "Generated RUSTFLAGS: $RUSTFLAGS"
-
-    PKG_CONFIG_LIBDIR="/tmp/native-lib-pc/" \
-    PKG_CONFIG_PATH="/tmp/native-lib-pc/" \
-    cargo build --release --target "$TARGET"
-    strip "target/${TARGET}/release/radiance"
+    #PKG_CONFIG_LIBDIR="/tmp/native-lib-pc/" \
+    #PKG_CONFIG_PATH="/tmp/native-lib-pc/" \
     ;;
   *)
     echo "Unknown target: $TARGET" >&2
     exit 1
     ;;
 esac
+
+export RUSTFLAGS
+echo "Generated RUSTFLAGS: $RUSTFLAGS"
+
+cargo build --release --target "$TARGET"
+$STRIP "target/${TARGET}/release/${EXE}"