1# - MACRO_OPTIONAL_ADD_SUBDIRECTORY() combines add_subdirectory() with an option() 2# MACRO_OPTIONAL_ADD_SUBDIRECTORY( <dir> ) 3# If you use MACRO_OPTIONAL_ADD_SUBDIRECTORY() instead of add_subdirectory(), 4# this will have two effects 5# 1 - CMake will not complain if the directory doesn't exist 6# This makes sense if you want to distribute just one of the subdirs 7# in a source package, e.g. just one of the subdirs in kdeextragear. 8# 2 - If the directory exists, it will offer an option to skip the 9# subdirectory. 10# This is useful if you want to compile only a subset of all 11# directories. 12 13# Copyright (c) 2007, Alexander Neundorf, <[email protected]> 14# 15# Redistribution and use is allowed according to the terms of the BSD license. 16# For details see the accompanying COPYING-CMAKE-SCRIPTS file. 17 18 19macro (MACRO_OPTIONAL_ADD_SUBDIRECTORY _dir ) 20 get_filename_component(_fullPath ${_dir} ABSOLUTE) 21 if(EXISTS ${_fullPath}) 22 if(${ARGC} EQUAL 2) 23 option(BUILD_${_dir} "Build directory ${_dir}" ${ARGV1}) 24 else(${ARGC} EQUAL 2) 25 option(BUILD_${_dir} "Build directory ${_dir}" TRUE) 26 endif(${ARGC} EQUAL 2) 27 if(BUILD_${_dir}) 28 add_subdirectory(${_dir}) 29 endif(BUILD_${_dir}) 30 endif(EXISTS ${_fullPath}) 31endmacro (MACRO_OPTIONAL_ADD_SUBDIRECTORY) 32