Add aarch64-apple-darwin to CI

Author: shepmaster

.github/workflows/main.yml

@@ -43,6 +43,10 @@ jobs:
           target: x86_64-apple-darwin
           rust: stable
           os: macos-latest
+        - thing: macos-aarch64
+          target: aarch64-apple-darwin
+          rust: nightly
+          os: macos-latest
         - thing: arm-android
           target: arm-linux-androideabi
           rust: stable

ci/run.sh

@@ -1,5 +1,13 @@
 target=$1
 set -ex
+
+if [ "$1" = "aarch64-apple-darwin" ] ; then
+	sudo xcode-select -s /Applications/Xcode_12.2.app/Contents/Developer/
+	export SDKROOT=$(xcrun -sdk macosx11.0 --show-sdk-path)
+	export MACOSX_DEPLOYMENT_TARGET=$(xcrun -sdk macosx11.0 --show-sdk-platform-version)
+	export CARGO_TARGET_AARCH64_APPLE_DARWIN_RUNNER=echo
+fi
+
 cargo test --manifest-path testcrate/Cargo.toml --target $1 -vv
 cargo test --manifest-path testcrate/Cargo.toml --target $1 -vv --release
 if [ "$1" = "x86_64-unknown-linux-gnu" ] ; then