+ - os: linux
+ compiler: gcc
+ addons:
+ apt:
+ sources: ['ubuntu-toolchain-r-test']
+ packages: ['gcc-7', 'automake', 'autoconf', 'libtool', 'shtool', 'libsqlite3-dev', 'python-sphinx', 'texinfo']
+ env: COMPILER=gcc-7
+
+ - os: linux
+ compiler: gcc
+ addons:
+ apt:
+ sources: ['ubuntu-toolchain-r-test']
+ packages: ['gcc-8', 'automake', 'autoconf', 'libtool', 'shtool', 'libsqlite3-dev', 'python-sphinx', 'texinfo']
+ env: COMPILER=gcc-8
+