# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

#
# Original Author: panard
# Purpose: cmake with a separate builddir
#

ECLASS="cmake"

DEPEND="dev-util/cmake"
RDEPEND=""

IUSE="debug"

BUILDDIR="${WORKDIR}/cmake-build"

# cmake option helper:
# 	cmake_use_option <USEFLAG> [<OPTION> [<value if use> [<value else>]]]
# eg:
# USE=qt debug
# cmake_use_option qt => -DWITH_qt=ON
# cmake_use_option gtk => -DWITH_gtk=OFF
# cmake_use_option qt ENABLE_QUI => -DENABLE_QUI=ON
# cmake_use_option gtk ENABLE_GUI => -DENABLE_GUI=OFF
# cmake_use_option gtk ENABLE_NOGUI OFF => -DENABLE_NOGUI=ON
# cmake_use_option doc GENDOC full =>
# cmake_use_option html DOCFORMAT html text => -DGENDOC=text
# cmake_use_option debug CMAKE_BUILD_TYPE debugfull => -DCMAKE_BUILD_TYPE=debugfull
#
cmake_use_option() {
	local USEFLAG="$1"
	local OPTION="$2"
	shift 2
	OPTION=${OPTION:-"WITH_${USEFLAG}"}
	local E_VALUE="ON" # value if use
	local D_VALUE="OFF" # value if not used
	if [ ! -z "$1" ]; then
		case $1 in
			[oO][nN])
				;;
			[oO][fF][fF])
				# reverse values
				E_VALUE="OFF"
				D_VALUE="ON"
				;;
			*)
				# non-boolean option
				E_VALUE="$1"
				D_VALUE="$2"
				;;
		esac
	fi

	local opt="-D${OPTION}="
	if useq ${USEFLAG}; then
		opt="${opt}${E_VALUE}"
	elif [ ! -z "${D_VALUE}" ]; then
		opt="${opt}${D_VALUE}"
	else
		opt=""
	fi
	echo ${opt}
}

cmake_configure() {
	debug-print-function
	debug-print "${FUNCNAME}: BUILDDIR is '${BUILDDIR}'"

	INSTALL_PREFIX="${INSTALL_PREFIX:-/usr}"

	mkdir -p ${BUILDDIR}
	cd ${BUILDDIR}
	echo cmake ${S} -DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX} \
			$(cmake_use_option debug CMAKE_BUILD_TYPE debugfull) $*
	cmake ${S} -DCMAKE_INSTALL_PREFIX=${INSTALL_PREFIX} \
			$(cmake_use_option debug CMAKE_BUILD_TYPE debugfull) $*
	ret=$?
	cd ${OLDPWD}
	return $ret
}

cmake_compile() {
	cd ${BUILDDIR} || die "no BUILDDIR configured"
	emake $*
	ret=$?
	cd ${OLDPWD}
	return $ret
}

cmake_src_compile() {
	cmake_configure $* || die "Configuration failed"
	cmake_compile || die "Compilation failed"
}

cmake_src_install() {
	cd ${BUILDDIR}
	emake DESTDIR="${D}" $* install || die "Installation failed"
	ret=$?
	rm -rf ${BUILDDIR}
	cd ${OLDPWD}
	return $ret
}

EXPORT_FUNCTIONS src_compile src_install