get gcc from a tarball

Author: japaric

.travis.yml

@@ -7,7 +7,6 @@ matrix:
 
     - env: TARGET=thumbv6m-none-eabi
       rust: stable
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv6m-none-eabi CC=clang
@@ -16,7 +15,6 @@ matrix:
 
     - env: TARGET=thumbv7m-none-eabi
       rust: stable
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi CC=clang
@@ -25,7 +23,6 @@ matrix:
 
     - env: TARGET=thumbv7em-none-eabi
       rust: stable
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi CC=clang
@@ -34,7 +31,6 @@ matrix:
 
     - env: TARGET=thumbv7em-none-eabihf
       rust: stable
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf CC=clang
@@ -43,28 +39,25 @@ matrix:
 
     - env: TARGET=thumbv6m-none-eabi
       rust: nightly
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
       rust: nightly
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabi
       rust: nightly
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7em-none-eabihf
       rust: nightly
-      sudo: true
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
 before_install: set -e
 
 install:
   - bash ci/install.sh
+  - export PATH="$PATH:$PWD/gcc/bin"
 
 script:
   - bash ci/script.sh

ci/install.sh

@@ -5,9 +5,9 @@ main() {
         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
+            mkdir gcc
+
+            curl -L https://developer.arm.com/-/media/Files/downloads/gnu-rm/7-2018q2/gcc-arm-none-eabi-7-2018-q2-update-linux.tar.bz2?revision=bc2c96c0-14b5-4bb4-9f18-bceb4050fee7?product=GNU%20Arm%20Embedded%20Toolchain,64-bit,,Linux,7-2018-q2-update | tar --strip-components=1 -C gcc -xj
         fi
     fi
 }