experimentally add osx in travis.yml

.travis.yml

@@ -1,31 +1,41 @@
 dist: trusty
-language: cpp
 
 matrix:
   include:
-    - compiler: gcc
+  - os: linux
-      addons:
+    language: cpp
-        apt:
+    compiler: gcc
-          sources:
+    env: COMPILER="g++-5"
-            - ubuntu-toolchain-r-test
+    addons:
-          packages:
+      apt:
-            - build-essential
+        sources:
-            - g++-5
+        - ubuntu-toolchain-r-test
-      env: COMPILER=g++-5
+        packages:
-    - compiler: clang
+        - g++-5
-      addons:
+        - build-essential
-        apt:
+        - cmake
-          sources:
+        - libboost-dev
-            - ubuntu-toolchain-r-test
+  - os: linux
-            - llvm-toolchain-precise-3.7
+    language: cpp
-          packages:
+    compiler: clang
-            - build-essential
+    env: COMPILER="clang++-3.7"
-            - clang-3.7
+    addons:
-      env: COMPILER=clang++-3.7
+      apt:
+        sources:
+        - ubuntu-toolchain-r-test
+        - llvm-toolchain-precise-3.7
+        packages:
+        - clang-3.7
+        - build-essential
+        - cmake
+        - libboost-dev
+  - os: osx
+    language: cpp
+    compiler: clang
 
-install:
+before_install:
-- sudo apt-get -qq update;
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
-- sudo apt-get -qq install libboost-all-dev;
+    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install cmake boost; fi
 
 script:
 - mkdir build
@@ -34,4 +44,3 @@ script:
 - cmake -DCMAKE_CXX_COMPILER=$COMPILER ..
 - make
 - make test
-