add travis setting

.travis.yml

@@ -0,0 +1,45 @@
+
+language: c
+
+matrix:
+  fast_finish: true
+  include:
+    - os: linux
+      sudo: false
+      env: GCC_VER=4.8
+    - os: linux
+      sudo: false
+      env: GCC_VER=4.9
+    - os: linux
+      sudo: false
+      env: GCC_VER=5.0
+
+addons:
+  apt:
+    packages:
+    - libc6-i386 
+
+before_install:
+  - if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
+         pushd .
+      && cd ~ && mkdir gcc && cd gcc
+      && if [ "$GCC_VER" = "4.8" ]; then GCC_URL="https://launchpadlibrarian.net/186124160/gcc-arm-none-eabi-4_8-2014q3-20140805-linux.tar.bz2" ; fi
+      && if [ "$GCC_VER" = "4.9" ]; then GCC_URL="https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2" ; fi
+      && if [ "$GCC_VER" = "5.0" ]; then GCC_URL="https://launchpad.net/gcc-arm-embedded/5.0/5-2016-q1-update/+download/gcc-arm-none-eabi-5_3-2016q1-20160330-linux.tar.bz2" ; fi
+      && wget -O gcc.tar.bz2 ${GCC_URL}
+      && tar -jxf gcc.tar.bz2 --strip 1
+      && exportline="export PATH=\$HOME/gcc/bin:\$PATH"
+      && if grep -Fxq "$exportline" ~/.profile; then echo nothing to do ; else echo $exportline >> ~/.profile; fi
+      && . ~/.profile
+      && popd
+      ;
+   fi
+
+before_script:
+  - arm-none-eabi-gcc --version
+
+script:
+  - make
+ 
+notifications:
+  email: false