.travis.yml: enable Mac OS X

.travis.yml

@@ -9,6 +9,7 @@ addons:
 
 os:
   - linux
+  - osx
 
 env:
   global:
@@ -18,14 +19,17 @@ before_install:
   # C++14
   - test "$TRAVIS_OS_NAME" != "linux" || sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
   - test "$TRAVIS_OS_NAME" != "linux" || sudo apt-get update -qq
+  - test "$TRAVIS_OS_NAME" != "osx" || brew update
 
 install:
   # C++14
   - test "$TRAVIS_OS_NAME" != "linux" || sudo apt-get install -qq g++-5
+  - test "$TRAVIS_OS_NAME" != "osx" || brew install cppunit
 
 script:
   - OPTIONS="--enable-test"
   - test "$TRAVIS_OS_NAME" != "linux" || export CC=gcc-5 CXX=g++-5
+  - test "$TRAVIS_OS_NAME" != "osx" || OPTIONS="$OPTIONS --enable-osx"
   - ./autogen.sh
   - ./configure --disable-silent-rules --disable-dependency-tracking $OPTIONS
   - make