Merge pull request #4990 from acozzette/aarch64-build

Added support for building the aarch64 and ppcle64 protoc binaries with Kokoro

kokoro/release/protoc/linux/build.sh

@@ -11,6 +11,16 @@ git submodule update --init --recursive
 # Generate the configure script.
 ./autogen.sh
 
+# Cross-build for aarch64 and ppc64le. Note: we do these builds first to avoid
+# file permission issues. The Docker builds will create directories owned by
+# root, which causes problems if we try to add new artifacts to those
+# directories afterward.
+sudo apt install -y g++-aarch64-linux-gnu
+protoc-artifacts/build-protoc.sh linux aarch_64 protoc
+
+sudo apt install -y g++-powerpc64le-linux-gnu
+protoc-artifacts/build-protoc.sh linux ppcle_64 protoc
+
 # Use docker image to build linux artifacts.
 DOCKER_IMAGE_NAME=protobuf/protoc_$(sha1sum protoc-artifacts/Dockerfile | cut -f1 -d " ")
 docker pull $DOCKER_IMAGE_NAME
@@ -28,9 +38,3 @@ docker run -v $(pwd):/var/local/protobuf --rm $DOCKER_IMAGE_NAME \
   echo "Failed to build protoc for linux + x86_32."
   exit 1
 }
-
-# Cross-build for some architectures.
-# TODO(xiaofeng): It currently fails with "machine `aarch64' not recognized"
-# error.
-# sudo apt install -y g++-aarch64-linux-gnu
-# protoc-artifacts/build-protoc.sh linux aarch_64 protoc

protoc-artifacts/README.md

@@ -154,10 +154,10 @@ and upload these zip packages to the download section of the github
 release. For example:
 
 ```
-$ ./build-zip.sh 3.6.0
+$ ./build-zip.sh protoc 3.6.0
 ```
 
-The above command will create 5 zip files:
+The above command will create 7 zip files:
 
 ```
 dist/protoc-3.6.0-win32.zip
@@ -165,6 +165,7 @@ dist/protoc-3.6.0-osx-x86_32.zip
 dist/protoc-3.6.0-osx-x86_64.zip
 dist/protoc-3.6.0-linux-x86_32.zip
 dist/protoc-3.6.0-linux-x86_64.zip
+dist/protoc-3.6.0-linux-aarch_64.zip
 dist/protoc-3.6.0-linux-ppcle_64.zip
 ```