1# - Returns whether the current project is on its own or within another project's build
2#
3#  get_subproject_status(<resultvar>) - resultvar will be YES if we are
4#   included in another project, or NO if we are being built separately
5#
6# Requires CMake 2.6 or newer (uses the 'function' command)
7#
8# Original Author:
9# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
10# http://academic.cleardefinition.com
11# Iowa State University HCI Graduate Program/VRAC
12#
13# Copyright Iowa State University 2009-2010.
14# Distributed under the Boost Software License, Version 1.0.
15# (See accompanying file LICENSE_1_0.txt or copy at
16# http://www.boost.org/LICENSE_1_0.txt)
17
18if(__get_subproject_status)
19	return()
20endif()
21set(__get_subproject_status YES)
22
23function(get_subproject_status _var)
24	if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
25		# Base source dir is our source dir - we are top-level
26		set(${_var} NO PARENT_SCOPE)
27	else()
28		# Base source dir is not our source dir - we are a subproject
29		set(${_var} YES PARENT_SCOPE)
30	endif()
31endfunction()
32