@ -47,7 +47,7 @@ matrix:
addons:
apt:
sources: ["ubuntu-toolchain-r-test", "llvm-toolchain-trusty-5.0"]
packages: ["clang-5.0", "ninja-build"]
packages: ["clang-5.0", "g++-7", "ninja-build"]
before_install:
- export CXX=${CXX_COMPILER}