Add CI for ARM linux

.travis.yml

@@ -22,6 +22,9 @@ matrix:
     - os: linux
       env: TARGET=x86_64-unknown-linux-musl
       rust: nightly-2015-09-08
+    - os: linux
+      env: TARGET=arm-unknown-linux-gnueabihf
+      rust: nightly-2015-09-08
 addons:
   apt:
     packages:

ci/cargo-config

 [target.arm-linux-androideabi]
 linker = "arm-linux-androideabi-gcc"
+
+[target.arm-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc-4.7"

ci/run-travis.sh

@@ -11,14 +11,22 @@ export HOST=$ARCH-$OS
 # clang has better error messages and implements alignof more broadly
 export CC=clang
 
+EXTRA_TARGETS=https://people.mozilla.org/~acrichton/libc-test/2015-09-08
+
 if [ "$TARGET" = "arm-linux-androideabi" ]; then
   # Pull a pre-built docker image for testing android, then run tests entirely
   # within that image.
   docker pull alexcrichton/rust-libc-test
   docker run -v `pwd`:/clone -t alexcrichton/rust-libc-test sh ci/run.sh $TARGET
 elif [ "$TARGET" = "x86_64-unknown-linux-musl" ]; then
-  curl -s https://people.mozilla.org/~acrichton/libc-test/2015-09-08/x86_64-unknown-linux-musl.tar.gz | \
-    tar xzf - -C $HOME/rust/lib/rustlib
+  curl -s $EXTRA_TARGETS/$TARGET.tar.gz | tar xzf - -C $HOME/rust/lib/rustlib
+  sh ci/run.sh $TARGET
+elif [ "$TARGET" = "arm-unknown-linux-gnueabihf" ]; then
+  curl -s $EXTRA_TARGETS/$TARGET.tar.gz | tar xzf - -C $HOME/rust/lib/rustlib
+  sudo apt-get install gcc-4.7-arm-linux-gnueabihf
+  mkdir .cargo
+  cp ci/cargo-config .cargo/config
+  export CC=arm-linux-gnueabihf-gcc-4.7
   sh ci/run.sh $TARGET
 else
   # Download and install the relevant target locally, then run tests

ci/run.sh

@@ -10,6 +10,8 @@ if [ "$TARGET" = "arm-linux-androideabi" ]; then
     adb wait-for-device
     adb push /root/target/$TARGET/debug/all-* /data/test
     adb shell /data/test
+elif [ "$TARGET" = "arm-unknown-linux-gnueabihf" ]; then
+    qemu-arm -L /usr/arm-linux-gnueabi /root/target/$TARGET/debug/all-*
 else
     cargo test --manifest-path libc-test/Cargo.toml --target $TARGET
 fi