ADD: added new version of protobuf

libs/protobuf/kokoro/release/protoc/linux/build.sh

@@ -1,29 +1,44 @@
 #!/bin/bash
 
-# This is not the source of truth for release protoc executables, and will soon
-# be deprecated.
-
-set -ex
+set -x
 
 # Change to repo root.
 cd $(dirname $0)/../../../..
-GIT_REPO_ROOT=$(pwd)
 
 # Initialize any submodules.
 git submodule update --init --recursive
 
+# Generate the configure script.
+./autogen.sh
+
 # Cross-build for aarch64, ppc64le and s390x. 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
 
-kokoro/release/protoc/build-protoc.sh linux aarch_64 protoc
+sudo apt install -y g++-powerpc64le-linux-gnu
+protoc-artifacts/build-protoc.sh linux ppcle_64 protoc
 
-kokoro/release/protoc/build-protoc.sh linux ppcle_64 protoc
+sudo apt install -y g++-s390x-linux-gnu
+protoc-artifacts/build-protoc.sh linux s390_64 protoc
 
-kokoro/release/protoc/build-protoc.sh linux s390_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
 
-kokoro/release/protoc/build-protoc.sh linux x86_64 protoc
+docker run -v $(pwd):/var/local/protobuf --rm $DOCKER_IMAGE_NAME \
+    bash -l /var/local/protobuf/protoc-artifacts/build-protoc.sh \
+    linux x86_64 protoc || {
+  echo "Failed to build protoc for linux + x86_64."
+  exit 1
+}
 
-kokoro/release/protoc/build-protoc.sh linux x86_32 protoc
+docker run -v $(pwd):/var/local/protobuf --rm $DOCKER_IMAGE_NAME \
+    bash -l /var/local/protobuf/protoc-artifacts/build-protoc.sh \
+    linux x86_32 protoc || {
+  echo "Failed to build protoc for linux + x86_32."
+  exit 1
+}