configure

#!/bin/bash

print_usage() {
  (cat | fold -w 80) << EOF
Usage: configure [--build=debug|release] [--prefix=<install prefix>]

Configures either a debug or release build, with the given installation prefix.

  --build-type=BUILD_TYPE   configures either a debug or release build
  --prefix=PREFIX           installation prefix
EOF
  exit 0
}

build_benchmarks="ON"
build_unit_tests="ON"
build_type="debug"
cmake_install_prefix="/usr/local"

for arg in "$@"; do
  case $arg in
    -h|--help)
      print_usage
      shift;
      ;;
    --build-type=*)
      build_type=${arg#*=}
      shift
      ;;
    --prefix=*)
      cmake_install_prefix=${arg#*=}
      shift
      ;;
  esac
done

if [ ! -e build/ ]; then
  mkdir build
fi

# Determine the CMake build type from the build type specified by the user. In
# case an invalid build type is specified, issue an error and exit.
if [ $build_type = "debug" ]; then
  cmake_build_type="Debug"
elif [ $build_type = "release" ]; then
  cmake_build_type="Release"
else
  echo "Invalid build type '${build_type}' specified, specify either 'debug' or 'release'."
  exit 1
fi

printf "** Configuring a $build_type build, with installation prefix '$cmake_install_prefix'...\n\n"

cd build && cmake ../ -GNinja \
  -DCMAKE_MAKE_PROGRAM="$(command -v ninja)" \
  -DCMAKE_INSTALL_PREFIX="$cmake_install_prefix" \
  -DCMAKE_BUILD_TYPE="$cmake_build_type"

printf "\n** Configuration complete, to build issue 'ninja -C build'.\n"