#!/bin/bash

# common tasks before either build or test
function configure()
{
  set -e   # Make sure any error makes the script to return an error code
  set -x   # echo

  SOURCE_DIR=`pwd`
  BUILD_DIR=build

  #env
  git clean -fd || true
  rm -fr $BUILD_DIR || true
  mkdir $BUILD_DIR && cd $BUILD_DIR

  if [ ! -z "$GCC_VERSION" ]; then
    export CC=gcc-$GCC_VERSION
    export CXX=g++-$GCC_VERSION
  fi

  # GTSAM_BUILD_WITH_MARCH_NATIVE=OFF: to avoid crashes in builder VMs
  cmake $SOURCE_DIR \
      -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE:-Debug} \
      -DGTSAM_BUILD_TESTS=${GTSAM_BUILD_TESTS:-OFF} \
      -DGTSAM_BUILD_UNSTABLE=${GTSAM_BUILD_UNSTABLE:-ON} \
      -DGTSAM_USE_QUATERNIONS=${GTSAM_USE_QUATERNIONS:-OFF} \
      -DGTSAM_BUILD_EXAMPLES_ALWAYS=${GTSAM_BUILD_EXAMPLES_ALWAYS:-ON} \
      -DGTSAM_ALLOW_DEPRECATED_SINCE_V4=${GTSAM_ALLOW_DEPRECATED_SINCE_V4:-OFF} \
      -DGTSAM_BUILD_WITH_MARCH_NATIVE=OFF \
      -DCMAKE_VERBOSE_MAKEFILE=ON
}


# common tasks after either build or test
function finish ()
{
  # Print ccache stats
  ccache -s

  cd $SOURCE_DIR
}

# compile the code with the intent of populating the cache
function build ()
{
  export GTSAM_BUILD_EXAMPLES_ALWAYS=ON
  export GTSAM_BUILD_TESTS=OFF

  configure

  make -j2

  finish
}

# run the tests
function test ()
{
  export GTSAM_BUILD_EXAMPLES_ALWAYS=OFF
  export GTSAM_BUILD_TESTS=ON

  configure

  # Actual build:
  make -j2 check

  finish
}

# select between build or test
case $1 in
  -b)
    build
    ;;
  -t)
    test
    ;;
esac