From 17e016869a22b13b1f568ec534444928ff136a8e Mon Sep 17 00:00:00 2001
From: murgatroid99 <mlumish@google.com>
Date: Fri, 9 Jun 2017 16:26:14 -0700
Subject: [PATCH] Add ARM Linux Node artifacts

---
 tools/dockerfile/grpc_artifact_linux_x64/Dockerfile | 8 ++++++++
 tools/run_tests/artifacts/artifact_targets.py       | 7 ++++---
 tools/run_tests/artifacts/build_artifact_node.sh    | 7 +++++++
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/tools/dockerfile/grpc_artifact_linux_x64/Dockerfile b/tools/dockerfile/grpc_artifact_linux_x64/Dockerfile
index 34799447171..c3590f5e5db 100644
--- a/tools/dockerfile/grpc_artifact_linux_x64/Dockerfile
+++ b/tools/dockerfile/grpc_artifact_linux_x64/Dockerfile
@@ -101,6 +101,14 @@ RUN /bin/bash -l -c "gem install bundler --no-ri --no-rdoc"
 RUN apt-get update && apt-get install -y \
     php5 php5-dev php-pear phpunit
 
+##################
+# Install cross compiler for ARM
+
+RUN echo 'deb http://emdebian.org/tools/debian/ jessie main' | tee -a /etc/apt/sources.list.d/crosstools.list && \
+  curl http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add -
+
+RUN dpkg --add-architecture armhf && apt-get update && apt-get install -y crossbuild-essential-armhf
+
 RUN mkdir /var/local/jenkins
 
 # Define the default command.
diff --git a/tools/run_tests/artifacts/artifact_targets.py b/tools/run_tests/artifacts/artifact_targets.py
index e3658acbf65..29eca92a34b 100644
--- a/tools/run_tests/artifacts/artifact_targets.py
+++ b/tools/run_tests/artifacts/artifact_targets.py
@@ -279,11 +279,12 @@ class NodeExtArtifact:
         return create_docker_jobspec(
             self.name,
             'tools/dockerfile/grpc_artifact_linux_{}'.format(self.arch),
-            'tools/run_tests/artifacts/build_artifact_node.sh {}'.format(self.gyp_arch))
+            'tools/run_tests/artifacts/build_artifact_node.sh {} {}'.format(
+                self.gyp_arch, self.platform))
       else:
         return create_jobspec(self.name,
                               ['tools/run_tests/artifacts/build_artifact_node.sh',
-                               self.gyp_arch],
+                               self.gyp_arch, self.platform],
                                use_workspace=True)
 
 class PHPArtifact:
@@ -343,7 +344,7 @@ class ProtocArtifact:
             environ=environ,
             use_workspace=True)
     else:
-      generator = 'Visual Studio 12 Win64' if self.arch == 'x64' else 'Visual Studio 12' 
+      generator = 'Visual Studio 12 Win64' if self.arch == 'x64' else 'Visual Studio 12'
       vcplatform = 'x64' if self.arch == 'x64' else 'Win32'
       return create_jobspec(self.name,
                             ['tools\\run_tests\\artifacts\\build_artifact_protoc.bat'],
diff --git a/tools/run_tests/artifacts/build_artifact_node.sh b/tools/run_tests/artifacts/build_artifact_node.sh
index e5e36903ebd..af0bed1fe23 100755
--- a/tools/run_tests/artifacts/build_artifact_node.sh
+++ b/tools/run_tests/artifacts/build_artifact_node.sh
@@ -29,6 +29,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 NODE_TARGET_ARCH=$1
+NODE_TARGET_OS=$2
 source ~/.nvm/nvm.sh
 
 nvm use 4
@@ -50,6 +51,12 @@ for version in ${node_versions[@]}
 do
   ./node_modules/.bin/node-pre-gyp configure rebuild package --target=$version --target_arch=$NODE_TARGET_ARCH --grpc_alpine=true
   cp -r build/stage/* "${ARTIFACTS_OUT}"/
+  if [ "$NODE_TARGET_ARCH" == 'x64' ] && [ "$NODE_TARGET_OS" == 'linux' ]
+  then
+    # Cross compile for ARM on x64
+    CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-g++ ./node_modules/.bin/node-pre-gyp configure rebuild package testpackage --target=$version --target_arch=arm
+    cp -r build/stage/* "${ARTIFACTS_OUT}"/
+  fi
 done
 
 for version in ${electron_versions[@]}