language: cpp

# use Ubuntu 20.04 (Focal Fossa) that defaults to Python 3
dist: focal

# speed up incremental builds
cache: ccache

compiler:
  - gcc
  - clang

# preinstalled packages
addons:
  apt:
    packages:
    - bison
    - python3-docutils

# configurations: cmake/autotools, in-tree/out-of-tree, release/debug, etc.
env:
  - CMAKE=no  BUILD_DIR=.      CONFIG_DIR=.                                COMMON_FLAGS="-O2 -g"
  - CMAKE=no  BUILD_DIR=.build CONFIG_DIR=.. CONFIG_FLAGS="--enable-debug" COMMON_FLAGS="-O2 -g"
  - CMAKE=yes BUILD_DIR=.      CONFIG_DIR=.  BUILD_TYPE=Debug              COMMON_FLAGS="-O2 -g"
  - CMAKE=yes BUILD_DIR=.build CONFIG_DIR=.. BUILD_TYPE=Debug              COMMON_FLAGS="-O2 -g" SKELETON=yes
  - CMAKE=yes BUILD_DIR=.build CONFIG_DIR=.. BUILD_TYPE=Release
  - CMAKE=yes BUILD_DIR=.build CONFIG_DIR=.. BUILD_TYPE=Debug              COMMON_FLAGS="-O2 -g -fsanitize=address"
  - CMAKE=yes BUILD_DIR=.build CONFIG_DIR=.. BUILD_TYPE=Debug              COMMON_FLAGS="-O2 -g -fsanitize=undefined"

script:
  - |
    function run_cmake() {
        cmake \
            -B . -S ${CONFIG_DIR} \
            -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
            -DCMAKE_C_FLAGS="${COMMON_FLAGS}" \
            -DCMAKE_CXX_FLAGS="${COMMON_FLAGS}" \
            -DCMAKE_EXE_LINKER_FLAGS="${COMMON_FLAGS}" \
            -DCMAKE_SHARED_LINKER_FLAGS="${COMMON_FLAGS}" \
            $@
    }
    function run_configure() {
        ${CONFIG_DIR}/configure \
            ${CONFIG_FLAGS} \
            CFLAGS="${COMMON_FLAGS}" \
            CXXFLAGS="${COMMON_FLAGS}" \
            LDFLAGS="${COMMON_FLAGS}" \
            $@
    }
  - |
    if [ x${CMAKE} = "xyes" ]; then
        mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
        run_cmake -DCMAKE_INSTALL_PREFIX="$(pwd)/install"
    else
        ./autogen.sh
        mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
        run_configure --prefix="$(pwd)/install"
    fi
  - make -j$(nproc)
  - make install
  - |
    if [ x${CMAKE} = "xyes" ]; then
        run_cmake -DCMAKE_INSTALL_PREFIX="$(pwd)/install-2" \
            -DRE2C_BUILD_RE2GO=on \
            -DRE2C_BUILD_LIBS=on \
            -DRE2C_REBUILD_DOCS=on \
            -DRE2C_REBUILD_LEXERS=on \
            -DRE2C_FOR_BUILD="$(pwd)/install/bin/re2c"
    else
        run_configure --prefix="$(pwd)/install-2" \
            --enable-golang \
            --enable-libs \
            --enable-docs \
            --enable-lexers \
            RE2C_FOR_BUILD="$(pwd)/install/bin/re2c"
    fi
  - find ${CONFIG_DIR}/src -name '*.re' | xargs touch
  - make -j$(nproc)
  - |
    if [ x${SKELETON} = "xyes" ]; then
        ./run_tests.py --skeleton
    else
        make -j$(nproc) check VERBOSE=1
    fi