#!/bin/sh
# Convenience wrapper for easily viewing/setting options that
# the project's CMake scripts will recognize
set -e
command="$0 $*"

# check for `cmake` command
type cmake > /dev/null 2>&1 || {
    echo "\
This package requires CMake, please install it first, then you may
use this configure script to access CMake equivalent functionality.\
" >&2;
    exit 1;
}

usage="\
Usage: $0 [OPTION]... [VAR=VALUE]...

  Build Options:
    --builddir=DIR         place build files in directory [build]
    --generator=GENERATOR  CMake generator to use (see cmake --help)

  Installation Directories:
    --prefix=PREFIX        installation directory [/usr/local/bro]
    --scriptdir=PATH       root installation directory for Bro scripts
                           [PREFIX/share/bro]
    --conf-files-dir=PATH  config files installation directory [PREFIX/etc]

  Optional Features:
    --enable-debug         compile in debugging mode
    --enable-mobile-ipv6   analyze mobile IPv6 features defined by RFC 6275
    --enable-perftools-debug use Google's perftools for debugging
    --disable-broccoli     don't build or install the Broccoli library
    --disable-broctl       don't install Broctl
    --disable-auxtools     don't build or install auxiliary tools
    --disable-perftools    don't try to build with Google Perftools
    --disable-python       don't try to build python bindings for broccoli
    --disable-ruby         don't try to build ruby bindings for broccoli

  Required Packages in Non-Standard Locations:
    --with-openssl=PATH    path to OpenSSL install root
    --with-bind=PATH       path to BIND install root
    --with-pcap=PATH       path to libpcap install root
    --with-binpac=PATH     path to BinPAC install root
    --with-flex=PATH       path to flex executable
    --with-bison=PATH      path to bison executable
    --with-perl=PATH       path to perl executable

  Optional Packages in Non-Standard Locations:
    --with-libmagic=PATH   path to libmagic install root
    --with-geoip=PATH      path to the libGeoIP install root
    --with-perftools=PATH  path to Google Perftools install root
    --with-python=PATH     path to Python interpreter
    --with-python-lib=PATH path to libpython
    --with-python-inc=PATH path to Python headers
    --with-ruby=PATH       path to ruby interpreter
    --with-ruby-lib=PATH   path to ruby library
    --with-ruby-inc=PATH   path to ruby headers
    --with-swig=PATH       path to SWIG executable
    --with-dataseries=PATH path to DataSeries and Lintel libraries
    --with-xml2=PATH       path to libxml2 installation (for DataSeries)

  Packaging Options (for developers):
    --binary-package       toggle special logic for binary packaging
    --ignore-dirs=PATHS    paths to ignore when creating source package
                           (semicolon delimited and quoted when multiple)
    --pkg-name-prefix=NAME use the given name as the package prefix instead
                           of the default CMake project name
    --osx-sysroot=PATH     path to the OS X SDK to compile against
    --osx-min-version=VER  minimum OS X version (the deployment target)

  Influential Environment Variables (only on first invocation
  per build directory):
    CC                     C compiler command
    CFLAGS                 C compiler flags
    CXX                    C++ compiler command
    CXXFLAGS               C++ compiler flags
"

sourcedir="$( cd "$( dirname "$0" )" && pwd )"

# Function to append a CMake cache entry definition to the
# CMakeCacheEntries variable
#   $1 is the cache entry variable name
#   $2 is the cache entry variable type
#   $3 is the cache entry variable value
append_cache_entry () {
    CMakeCacheEntries="$CMakeCacheEntries -D $1:$2=$3"
}

# set defaults
builddir=build
prefix=/usr/local/bro
CMakeCacheEntries=""
append_cache_entry CMAKE_INSTALL_PREFIX PATH   $prefix
append_cache_entry BRO_ROOT_DIR         PATH   $prefix
append_cache_entry PY_MOD_INSTALL_DIR   PATH   $prefix/lib/broctl
append_cache_entry BRO_SCRIPT_INSTALL_PATH STRING $prefix/share/bro
append_cache_entry BRO_ETC_INSTALL_DIR  PATH   $prefix/etc
append_cache_entry ENABLE_DEBUG         BOOL   false
append_cache_entry ENABLE_PERFTOOLS_DEBUG BOOL false
append_cache_entry BinPAC_SKIP_INSTALL  BOOL   true
append_cache_entry BUILD_SHARED_LIBS    BOOL   true
append_cache_entry INSTALL_AUX_TOOLS    BOOL   true
append_cache_entry INSTALL_BROCCOLI     BOOL   true
append_cache_entry INSTALL_BROCTL       BOOL   true
append_cache_entry CPACK_SOURCE_IGNORE_FILES STRING
append_cache_entry ENABLE_MOBILE_IPV6   BOOL   false
append_cache_entry DISABLE_PERFTOOLS    BOOL   false

# parse arguments
while [ $# -ne 0 ]; do
    case "$1" in
        -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
        *) optarg= ;;
    esac

    case "$1" in
        --help|-h)
            echo "${usage}" 1>&2
            exit 1
            ;;
        --builddir=*)
            builddir=$optarg
            ;;
        --generator=*)
            CMakeGenerator="$optarg"
            ;;
        --prefix=*)
            prefix=$optarg
            append_cache_entry CMAKE_INSTALL_PREFIX PATH   $optarg
            append_cache_entry BRO_ROOT_DIR         PATH   $optarg
            append_cache_entry PY_MOD_INSTALL_DIR   PATH   $optarg/lib/broctl
            ;;
        --scriptdir=*)
            append_cache_entry BRO_SCRIPT_INSTALL_PATH STRING $optarg
            user_set_scriptdir="true"
            ;;
        --conf-files-dir=*)
            append_cache_entry BRO_ETC_INSTALL_DIR PATH $optarg
            user_set_conffilesdir="true"
            ;;
        --enable-debug)
            append_cache_entry ENABLE_DEBUG         BOOL   true
            ;;
        --enable-mobile-ipv6)
            append_cache_entry ENABLE_MOBILE_IPV6         BOOL   true
            ;;
        --enable-perftools-debug)
            append_cache_entry ENABLE_PERFTOOLS_DEBUG BOOL   true
            ;;
        --disable-broccoli)
            append_cache_entry INSTALL_BROCCOLI     BOOL   false
            ;;
        --disable-broctl)
            append_cache_entry INSTALL_BROCTL       BOOL   false
            ;;
        --disable-auxtools)
            append_cache_entry INSTALL_AUX_TOOLS    BOOL   false
            ;;
        --disable-perftools)
            append_cache_entry DISABLE_PERFTOOLS    BOOL   true
            ;;
        --disable-python)
            append_cache_entry DISABLE_PYTHON_BINDINGS     BOOL   true
            ;;
        --disable-ruby)
            append_cache_entry DISABLE_RUBY_BINDINGS     BOOL   true
            ;;
        --with-openssl=*)
            append_cache_entry OpenSSL_ROOT_DIR PATH $optarg
            ;;
        --with-bind=*)
            append_cache_entry BIND_ROOT_DIR PATH $optarg
            ;;
        --with-pcap=*)
            append_cache_entry PCAP_ROOT_DIR PATH $optarg
            ;;
        --with-binpac=*)
            append_cache_entry BinPAC_ROOT_DIR PATH $optarg
            ;;
        --with-flex=*)
            append_cache_entry FLEX_EXECUTABLE PATH $optarg
            ;;
        --with-bison=*)
            append_cache_entry BISON_EXECUTABLE PATH $optarg
            ;;
        --with-perl=*)
            append_cache_entry PERL_EXECUTABLE PATH $optarg
            ;;
        --with-libmagic=*)
            append_cache_entry LibMagic_ROOT_DIR PATH $optarg
            ;;
        --with-geoip=*)
            append_cache_entry LibGeoIP_ROOT_DIR PATH $optarg
            ;;
        --with-perftools=*)
            append_cache_entry GooglePerftools_ROOT_DIR PATH $optarg
            ;;
        --with-python=*)
            append_cache_entry PYTHON_EXECUTABLE    PATH    $optarg
            ;;
        --with-python-lib=*)
            append_cache_entry PYTHON_LIBRARY       PATH    $optarg
            ;;
        --with-python-inc=*)
            append_cache_entry PYTHON_INCLUDE_DIR   PATH    $optarg
            append_cache_entry PYTHON_INCLUDE_PATH  PATH    $optarg
            ;;
        --with-ruby=*)
            append_cache_entry RUBY_EXECUTABLE    PATH    $optarg
            ;;
        --with-ruby-lib=*)
            append_cache_entry RUBY_LIBRARY       PATH    $optarg
            ;;
        --with-ruby-inc=*)
            append_cache_entry RUBY_INCLUDE_DIRS  PATH    $optarg
            append_cache_entry RUBY_INCLUDE_PATH  PATH    $optarg
            ;;
        --with-swig=*)
            append_cache_entry SWIG_EXECUTABLE      PATH    $optarg
            ;;
        --with-dataseries=*)
            append_cache_entry DataSeries_ROOT_DIR PATH $optarg
            append_cache_entry Lintel_ROOT_DIR PATH $optarg
            ;;
        --with-xml2=*)
            append_cache_entry LibXML2_ROOT_DIR PATH $optarg
            ;;
        --binary-package)
            append_cache_entry BINARY_PACKAGING_MODE BOOL true
            ;;
        --ignore-dirs=*)
            append_cache_entry CPACK_SOURCE_IGNORE_FILES STRING $optarg
            ;;
        --pkg-name-prefix=*)
            append_cache_entry PACKAGE_NAME_PREFIX STRING $optarg
            ;;
        --osx-sysroot=*)
            append_cache_entry CMAKE_OSX_SYSROOT PATH $optarg
            ;;
        --osx-min-version=*)
            append_cache_entry CMAKE_OSX_DEPLOYMENT_TARGET STRING $optarg
            ;;
        *)
            echo "Invalid option '$1'.  Try $0 --help to see available options."
            exit 1
            ;;
    esac
    shift
done

if [ "$user_set_scriptdir" != "true" ]; then
    append_cache_entry BRO_SCRIPT_INSTALL_PATH STRING $prefix/share/bro
fi

if [ "$user_set_conffilesdir" != "true" ]; then
    append_cache_entry BRO_ETC_INSTALL_DIR PATH $prefix/etc
fi

if [ -d $builddir ]; then
    # If build directory exists, check if it has a CMake cache
    if [ -f $builddir/CMakeCache.txt ]; then
        # If the CMake cache exists, delete it so that this configuration
        # is not tainted by a previous one
        rm -f $builddir/CMakeCache.txt
    fi
else
    # Create build directory
    mkdir -p $builddir
fi

echo "Build Directory : $builddir"
echo "Source Directory: $sourcedir"
cd $builddir

if [ -n "$CMakeGenerator" ]; then
    cmake -G "$CMakeGenerator" $CMakeCacheEntries $sourcedir
else
    cmake $CMakeCacheEntries $sourcedir
fi

echo "# This is the command used to configure this build" > config.status
echo $command >> config.status
chmod u+x config.status