Updating ARM compiler to oldest available version 5.3

Author: bridadan

.circleci/config.yml

@@ -24,11 +24,12 @@ commands:
     run_tests:
         steps:
             - run:
-                name: Install GCC ARM compiler
+                name: Install GCC ARM Embedded
+                working_directory: /opt
                 command: |
-                    add-apt-repository -y ppa:terry.guo/gcc-arm-embedded
-                    apt-get -y update
-                    apt-get -y install gcc-arm-none-eabi=4.9.3.2015q3-1trusty1
+                    wget -O gcc_arm_embedded.tar.bz2 "https://developer.arm.com/-/media/Files/downloads/gnu-rm/5_3-2016q1/gccarmnoneeabi532016q120160330linuxtar.bz2?revision=417e2623-c259-4a12-aacc-c87200b569c7?product=GNU%20Arm%20Embedded%20Toolchain,32-bit,,Linux,5-2016-q1-update"
+                    tar -jxf gcc_arm_embedded.tar.bz2
+                    echo 'export PATH="/opt/gcc-arm-none-eabi-5_3-2016q1/bin:$PATH"' >> $BASH_ENV
             - run:
                 name: Configure Git and Mercurial
                 command: |
@@ -55,7 +56,7 @@ commands:
             - run:
                 name: Create a new project
                 working_directory: integration_tests
-                command: mbed new-test
+                command: mbed new new-test
             - run:
                 name: Test project inspection
                 working_directory: integration_tests/new-test
@@ -66,6 +67,8 @@ commands:
                 name: Build through "compile" and "test"
                 working_directory: integration_tests/new-test
                 command: |
+                    echo $PATH
+                    ls -l /opt/gcc-arm-none-eabi-5_3-2016q1/bin
                     mbed compile --source=. --source=mbed-os/TESTS/integration/basic -j 0
                     mbed test --compile -n mbed-os-tests-integration-basic -j 0
             - run: