Musl: add arm64 build

Closes #133

.github/workflows/build-all.yml

@@ -268,6 +268,18 @@ jobs:
       target_cpu: x86
       enable_v8: true
 
+  linux_musl_arm64:
+    name: Linux musl arm64
+    uses: ./.github/workflows/build.yml
+    with:
+      branch: ${{ github.event.inputs.branch }}
+      version: ${{ github.event.inputs.version }}
+      is_debug: ${{ github.event.inputs.is_debug == 'true' }}
+      target_os: linux
+      target_cpu: arm64
+      target_libc: musl
+      enable_v8: false
+
   linux_musl_x64:
     name: Linux musl x64
     uses: ./.github/workflows/build.yml
@@ -631,6 +643,7 @@ jobs:
       - linux_arm_v8
       - linux_arm64
       - linux_arm64_v8
+      - linux_musl_arm64
       - linux_musl_x64
       - linux_musl_x64_v8
       - linux_musl_x86

.gitignore

@@ -10,6 +10,6 @@
 /staging/
 /build/
 *.tgz
-/*-musl-cross/
+/*-musl*-cross/
 /android-ndk*
 /conda/out/

patches/musl/toolchain.gn

@@ -43,3 +43,47 @@ gcc_toolchain("x64") {
     is_clang = false
   }
 }
+
+gcc_toolchain("arm") {
+  toolprefix = "arm-linux-musleabihf-"
+
+  cc = "${toolprefix}gcc"
+  cxx = "${toolprefix}g++"
+
+  readelf = "${toolprefix}readelf"
+  nm = "${toolprefix}nm"
+  ar = "${toolprefix}ar"
+  ld = cxx
+
+  extra_ldflags = "-static-libgcc -static-libstdc++"
+
+  toolchain_args = {
+    current_cpu = "arm"
+    current_os = "linux"
+
+    use_remoteexec = false
+    is_clang = false
+  }
+}
+
+gcc_toolchain("arm64") {
+  toolprefix = "aarch64-linux-musl-"
+
+  cc = "${toolprefix}gcc"
+  cxx = "${toolprefix}g++"
+
+  readelf = "${toolprefix}readelf"
+  nm = "${toolprefix}nm"
+  ar = "${toolprefix}ar"
+  ld = cxx
+
+  extra_ldflags = "-static-libgcc -static-libstdc++"
+
+  toolchain_args = {
+    current_cpu = "arm64"
+    current_os = "linux"
+
+    use_remoteexec = false
+    is_clang = false
+  }
+}

steps/01-install.sh

@@ -49,6 +49,16 @@ case "$TARGET_OS" in
           MUSL_VERSION="x86_64-linux-musl-cross"
           PACKAGES="g++-10"
           ;;
+
+        arm)
+          MUSL_VERSION="arm-linux-musleabihf-cross"
+          PACKAGES="g++-10"
+          ;;
+
+        arm64)
+          MUSL_VERSION="aarch64-linux-musl-cross"
+          PACKAGES="g++-10"
+          ;;
       esac
 
       [ -d "$MUSL_VERSION" ] || curl -L "$MUSL_URL/$MUSL_VERSION.tgz" | tar xz

steps/08-test.sh

@@ -56,12 +56,20 @@ case "$OS" in
   linux)
     case "$CPU" in
       arm)
-        PREFIX="arm-linux-gnueabihf-"
-        SUFFIX="-10"
+        if [ "$TARGET_LIBC" == "musl" ]; then
+          PREFIX="arm-linux-musleabihf-"
+        else
+          PREFIX="arm-linux-gnueabihf-"
+          SUFFIX="-10"
+        fi
         ;;
       arm64)
-        PREFIX="aarch64-linux-gnu-"
-        SUFFIX="-10"
+        if [ "$TARGET_LIBC" == "musl" ]; then
+          PREFIX="aarch64-linux-musl-"
+        else
+          PREFIX="aarch64-linux-gnu-"
+          SUFFIX="-10"
+        fi
         ;;
       x86)
         if [ "$TARGET_LIBC" == "musl" ]; then