travis compile

.travis.yml

@@ -4,10 +4,60 @@
 
 language: cpp
 
-# dist: trusty
+dist: trusty
+sudo: required
 
-compiler:
-  - gcc
+addons:
+  apt:
+    sources:
+    # add PPAs with more up-to-date toolchains
+    - ubuntu-toolchain-r-test
+    - llvm-toolchain-precise-3.6
+    packages:
+    # install toolchains
+    - gcc-5
+    - g++-5
+    - clang-3.6
+
+matrix:
+  include:
+    - compiler: gcc
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-4.9
+      env: COMPILER=g++-4.9
+    - compiler: gcc
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-5
+      env: COMPILER=g++-5
+    - compiler: clang
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.6
+          packages:
+            - clang-3.6
+      env: COMPILER=clang++-3.6
+    - compiler: clang
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.7
+          packages:
+            - clang-3.7
+      env: COMPILER=clang++-3.7
+
+#compiler:
+#  - gcc
 before_install:
   - pip install --user cpp-coveralls
 script: