[ARMPL] Fix a bug in the installation of ARM Performance Library that was causing the download of GCC dependencies from

          GCC website rather than the ParallelCluster public bucket.

Author: gmarciani

CHANGELOG.md

@@ -12,6 +12,10 @@ This file is used to list changes made in each version of the AWS ParallelCluste
 **CHANGES**
 - Ubuntu 20.04 is no longer supported.
 
+**BUG FIXES**
+- Fix a bug in the installation of ARM Performance Library that was causing the download of GCC dependencies from 
+  gcc website rather than the ParallelCluster public bucket.
+
 3.13.0
 ------
 **ENHANCEMENTS**

cookbooks/aws-parallelcluster-platform/resources/arm_pl/partial/_arm_pl_common.rb

@@ -119,14 +119,15 @@
     group 'root'
     cwd new_resource.sources_dir
     code <<-GCC
-        set -e
+        set -ex
 
         # Remove dir if it exists. This happens in case of retries.
         rm -rf gcc-#{gcc_version}
         tar -xf #{gcc_tarball}
         cd gcc-#{gcc_version}
-        # Patch the download_prerequisites script to download over https and not ftp. This works better in China regions.
-        sed -i "s#ftp://gcc\.gnu\.org/pub/gcc/infrastructure##{node['cluster']['artifacts_s3_url']}/dependencies/gcc/prerequisites#g" ./contrib/download_prerequisites
+        # Patch the download_prerequisites script to download GCC dependencies from our public bucket.
+        # This is required to support build image in isolated environments, also HTTPS works better than FTP in China regions. 
+        sed -i "s#\(ftp\|http\)://gcc\.gnu\.org/pub/gcc/infrastructure##{node['cluster']['artifacts_s3_url']}/dependencies/gcc/prerequisites#g" ./contrib/download_prerequisites
         ./contrib/download_prerequisites
         mkdir build && cd build
         ../configure --prefix=/opt/arm/armpl/gcc/#{gcc_version} --disable-bootstrap --enable-checking=release --enable-languages=c,c++,fortran --disable-multilib