MacroOptionalAddSubdirectory.cmake
68bb631292e1master

MacroOptionalAddSubdirectory.cmake
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			# - MACRO_OPTIONAL_ADD_SUBDIRECTORY() combines add_subdirectory() with an option()
			# MACRO_OPTIONAL_ADD_SUBDIRECTORY( <dir> )
			# If you use MACRO_OPTIONAL_ADD_SUBDIRECTORY() instead of add_subdirectory(),
			# this will have two effects
			# 1 - CMake will not complain if the directory doesn't exist
			# This makes sense if you want to distribute just one of the subdirs
			# in a source package, e.g. just one of the subdirs in kdeextragear.
			# 2 - If the directory exists, it will offer an option to skip the
			# subdirectory.
			# This is useful if you want to compile only a subset of all
			# directories.

			# Copyright (c) 2007, Alexander Neundorf, <neundorf@kde.org>
			#
			# Redistribution and use is allowed according to the terms of the BSD license.
			# For details see the accompanying COPYING-CMAKE-SCRIPTS file.


			macro (MACRO_OPTIONAL_ADD_SUBDIRECTORY _dir )
			get_filename_component(_fullPath ${_dir} ABSOLUTE)
			if(EXISTS ${_fullPath})
			if(${ARGC} EQUAL 2)
			option(BUILD_${_dir} "Build directory ${_dir}" ${ARGV1})
			else(${ARGC} EQUAL 2)
			option(BUILD_${_dir} "Build directory ${_dir}" TRUE)
			endif(${ARGC} EQUAL 2)
			if(BUILD_${_dir})
			add_subdirectory(${_dir})
			endif(BUILD_${_dir})
			endif(EXISTS ${_fullPath})
			endmacro (MACRO_OPTIONAL_ADD_SUBDIRECTORY)