language: c
compiler: gcc

sudo: false

env:
  - LUA="lua=5.1"
  - LUA="lua=5.1" EXTERNAL=true
  - LUA="lua=5.1" COMPILER="g++"
  - LUA="lua=5.1" EXTERNAL=true COMPILER="g++"
  - LUA="luajit=@v2.1 --compat=none"
  - LUA="luajit=@v2.1 --compat=none" EXTERNAL=true
  - LUA="luajit=@v2.1 --compat=all"
  - LUA="luajit=@v2.1 --compat=all" EXTERNAL=true
  - LUA="lua=5.2"
  - LUA="lua=5.2" EXTERNAL=true
  - LUA="lua=5.2" COMPILER="g++"
  - LUA="lua=5.2" EXTERNAL=true COMPILER="g++"

branches:
  only:
    - master

git:
  depth: 3

notifications:
  email: false

before_install:
  - pip install --user hererocks
  - hererocks old --$LUA
  - test -e old/bin/lua || (cd old/bin && ln -s luajit* lua)
  - hererocks new --lua=5.3

install:
  - export CC="${COMPILER:-gcc}" DEF="" SRC="" CFLAGS="-Wall -Wextra -Ic-api -O2 -fPIC"
  - if [ "x${EXTERNAL:-}" = xtrue ]; then DEF="-DCOMPAT53_PREFIX=compat53" SRC="c-api/compat-5.3.c"; fi
  - ${CC} ${CFLAGS} -Iold/include ${DEF} -shared -o old/testmod.so tests/testmod.c ${SRC}
  - ${CC} ${CFLAGS} -Inew/include ${DEF} -shared -o new/testmod.so tests/testmod.c ${SRC}
  - gcc ${CFLAGS} -Iold/include ${DEF} -shared -o old/compat53.so ltablib.c lutf8lib.c lstrlib.c ${SRC}

script:
  - (cd old && bin/lua ../tests/test.lua) > old.txt
  - (cd new && bin/lua ../tests/test.lua) > new.txt
  - diff old.txt new.txt || true