configure

#!/bin/bash

function usage ()
{
    echo "configure [OPTIONS...]"
    echo "  --help|-h                       Display this help"
    echo "  --cmake [arg]                   Use arg instead of \"cmake\""
    echo "  --cmake-argument [arg]          Pass additional arguments to cmake"
    echo "  --cmake-generator [arg]         Use this generator for cmake (e.g. Ninja)"
    echo "  --enable-dev-options            Set certain development options (cpack)"
    echo "  --asan                          Enable -fsanitize=address and -fsanitize=undefined"
    echo "  --debug                         Compile RTags in debug mode"
    echo "  --release                       Compile RTags in release mode (default)"
    echo "  --system-clang                  Don't build llvm/clang as part of RTags' build process (default)"
    echo "  --build-tests                   Build tests"
    echo "  --build-clang                   Download and build llvm/clang as part of RTags' build process"
    echo "  --no-install                    Generate a build that isn't going to be installed"
    echo "  --prefix [arg]                  Set install prefix to arg"
    echo "  --clang-libraries [arg]         Override what libraries RTags will use to link against clang/llvm"
    echo "  --clang-cxxflags [arg]          Override what cxxflags RTags will use for compilation to be able to include clang headers."
    echo "  --clang-libdir [arg]            Sets the libdir RTags will use for clang."
    echo "  --cotire                        Enable cotire when building RTags"
    echo "  --emacs                         Use arg instead of \"emacs\" when byte-compiling elisp"
    echo "  --lua-enabled                   Enable LUA AST scripting"
    echo "  --no-lua-files-install          Don't install RTags lua files"
    echo "  --no-elisp-files-install        Don't install RTags elisp files"
    echo "  --no-elisp-bytecompile          Don't bytecompile RTags elisp files"
    echo "  --elisp-install-location [arg]  Install elisp files to this location"
}

CMAKE=cmake
CMAKE_ARGS="-DCMAKE_EXPORT_COMPILE_COMMANDS=1"
BUILD=
while [ -n "$1" ]; do
    case "$1" in
        --help|-h)
            usage > /dev/stdout
            exit 0
            ;;
        --cmake)
            shift
            CMAKE="$1"
            ;;
        --cmake-argument)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} \"$1\""
            ;;
        --cmake-generator)
            shift
            CMAKE_GENERATOR="$1"
            ;;
        --enable-dev-options)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_ENABLE_DEV_OPTIONS=1"
            ;;
        --debug)
            CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=Debug"
            ;;
        --release)
            CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_BUILD_TYPE=Release"
            ;;
        --system-clang)
            BUILD=
            ;;
        --build-clang)
            BUILD=1
            ;;
        --build-tests)
            CMAKE_ARGS="${CMAKE_ARGS} -DBUILD_TESTS=1"
            ;;
        --no-install)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_NO_INSTALL=1"
            ;;
        --prefix)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DCMAKE_INSTALL_PREFIX=\"$1\""
            ;;
        --lua-enabled)
            CMAKE_ARGS="${CMAKE_ARGS} -DLUA_ENABLED=1"
            ;;
        --clang-libraries)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DLIBCLANG_LIBRARIES=\"$1\""
            ;;
        --clang-cxxflags)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DLIBCLANG_CXXFLAGS=\"$1\""
            ;;
        --clang-libdir)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DLIBCLANG_LIBDIR=\"$1\""
            ;;
        --cotire)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_COTIRE=1"
            ;;
        --emacs)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DEMACS=\"$1\""
            ;;
        --no-lua-files-install)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_NO_LUA_FILES=1"
            ;;
        --no-elisp-files-install)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_NO_ELISP_FILES=1"
            ;;
        --no-elisp-bytecompile)
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_NO_ELISP_BYTECOMPILE=1"
            ;;
        --asan)
            CMAKE_ARGS="${CMAKE_ARGS} -DASAN=address,undefined"
            ;;
        --asan=*)
            CMAKE_ARGS="${CMAKE_ARGS} -DASAN=`echo $1 | sed -e 's,--asan=,,'`"
            ;;
        --elisp-install-location)
            shift
            CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_ELISP_INSTALL_LOCATION=\"$1\""
            ;;
        *)
            usage > /dev/stderr
            echo "Unknown option $1"
            exit 1
            ;;
    esac
    shift
done

[ -n "$CMAKE_GENERATOR" ] && CMAKE_ARGS="${CMAKE_ARGS} -G \"$CMAKE_GENERATOR\""
[ -n "$BUILD" ] && CMAKE_ARGS="${CMAKE_ARGS} -DRTAGS_BUILD_CLANG=1"

echo -e "Running cmake:\n\"$CMAKE\" \"$(dirname ${BASH_SOURCE[0]})\" ${CMAKE_ARGS}\n"
rm -f CMakeCache.txt
eval "$CMAKE" "$(dirname ${BASH_SOURCE[0]})" ${CMAKE_ARGS}