.travis.yml

dist: bionic
language: cpp

addons:
  apt:
    sources:
     - sourceline: 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main'
       key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
    packages:
     - cmake
     - ninja-build
     - llvm-11-dev
     - libclang-11-dev
     - clang-11

before_install:
 # Extract the version number from the most-recently installed LLVM
 - VERSION=`ls -t /usr/lib/ | grep '^llvm-' | head -n 1 | sed -E 's/llvm-(.+)/\1/'`

 # Absolute paths to LLVM's root and bin directory
 - PREFIX_PATH=`llvm-config-$VERSION --prefix`
 - BIN_PATH=`llvm-config-$VERSION --bindir`

script:
# Build IWYU
 - mkdir build
 - cd build
 - cmake -GNinja -DCMAKE_PREFIX_PATH=$PREFIX_PATH -DCMAKE_C_COMPILER=$BIN_PATH/clang -DCMAKE_CXX_COMPILER=$BIN_PATH/clang++ -DCMAKE_INSTALL_PREFIX=./ ../
 - ninja

# Test IWYU
 - CTEST_OUTPUT_ON_FAILURE=1 ninja test

# Test install
 - ninja install

# Check license headers
 - cd ../
 - git ls-tree --full-tree --name-only -r HEAD | xargs ./iwyu-check-license-header.py