Add a build script for GRPC on Linux

GrpcInstall/

build_grpc_linux.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+if [ $# -lt 2 ]; then
+   echo "You need to provide two arguments:"
+   echo "  1. The folder in which to clone and build grpc"
+   echo "  2. The folder in which to install grpc"
+   echo "Both folders need to be user writeable but will be created if they do not exist"
+   echo "Example: "
+   echo "   build_grpc.sh /tmp/grpc `pwd`/GrpcInstall"
+   exit 1
+fi
+
+parentdir="$(dirname $1)"
+if [ -d $1 ]; then
+  if ! [ -w $1 ]; then
+    echo "$1 exists and you don't have the permissions to write to it"
+    exit 1
+  fi
+elif [ -d ${parentdir} ]; then
+  if ! [ -w ${parentdir} ]; then
+    echo "You don't have the permissions to write to ${parentdir}"
+    exit 1
+  fi
+else
+  echo "${parentdir} does not exist"
+  exit 1
+fi
+
+if [ -d "$2" ]; then
+  if ! [ -w "$2" ]; then
+    echo "You don't have the permissions to write to $2"
+    exit 1
+  fi
+else
+  mkdir -p "$2" || { echo "Failed to create $2. Make sure you have write permissions." ; exit 1; }
+fi
+
+
+echo "Cloning GRPC repository to: $1"
+echo "Installing to: $2"
+
+git clone https://github.com/grpc/grpc.git $1
+cd $1
+git checkout v1.21.1
+git submodule init
+git submodule update
+export PROTOBUF_CONFIG_OPTS="--prefix=$2"
+make prefix=$2
+echo "Installing GRPC to $2"
+make install prefix=$2
+cd third_party/protobuf
+make install
+