.travis.yml

dist: trusty
sudo: false
cache:
  ccache: true

language: none
 
matrix:
 include:
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
         packages:
           - gcc-5
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=gcc-5"
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
         packages:
           - gcc-6
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=gcc-6"
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
         packages:
           - gcc-7
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=gcc-7 DO_INSTALL=1"
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
           - llvm-toolchain-trusty-4.0
         packages:
           - clang-4.0
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=clang-4.0"
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
           - llvm-toolchain-trusty-5.0
         packages:
           - clang-5.0
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=clang-5.0"
   - os: linux
     addons:
       apt:
         sources:
           - ubuntu-toolchain-r-test
           - llvm-toolchain-trusty
         packages:
           - clang
           - ccache
           - make
           - libcurl4-gnutls-dev
     env:
       - MATRIX_EVAL="CC=clang"

before_install:
  - eval "${MATRIX_EVAL}"
  - export "CC=ccache $CC"
script:
  - "make"