install a newer gcc

Author: japaric

cortex-m-rt/.travis.yml

@@ -7,10 +7,7 @@ matrix:
 
     - env: TARGET=thumbv6m-none-eabi
       rust: stable
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv6m-none-eabi CC=clang
@@ -19,10 +16,7 @@ matrix:
 
     - env: TARGET=thumbv7m-none-eabi
       rust: stable
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi CC=clang
@@ -31,10 +25,7 @@ matrix:
 
     - env: TARGET=thumbv7em-none-eabi
       rust: stable
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi CC=clang
@@ -43,10 +34,7 @@ matrix:
 
     - env: TARGET=thumbv7em-none-eabihf
       rust: stable
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf CC=clang
@@ -55,34 +43,22 @@ matrix:
 
     - env: TARGET=thumbv6m-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf
       rust: nightly
-      addons:
-        apt:
-          packages:
-            - gcc-arm-none-eabi
+      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
 before_install: set -e

cortex-m-rt/ci/install.sh

@@ -3,6 +3,12 @@ set -euxo pipefail
 main() {
     if [ $TARGET != x86_64-unknown-linux-gnu ]; then
         rustup target add $TARGET
+
+        if [ ${CC:-gcc} = gcc ]; then
+            sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa -y
+            sudo apt-get update -q
+            sudo apt-get install gcc-arm-embedded -y
+        fi
     fi
 }