# this module defines two macros: # MACRO_PUSH_REQUIRED_VARS() # and # MACRO_POP_REQUIRED_VARS() # use these if you call cmake macros which use # any of the CMAKE_REQUIRED_XXX variables # # Usage: # MACRO_PUSH_REQUIRED_VARS() # SET(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} -DSOME_MORE_DEF) # CHECK_FUNCTION_EXISTS(...) # MACRO_POP_REQUIRED_VARS() # Copyright (c) 2006, Alexander Neundorf, # # Redistribution and use is allowed according to the terms of the BSD license. # For details see the accompanying COPYING-CMAKE-SCRIPTS file. MACRO(MACRO_PUSH_REQUIRED_VARS) IF(NOT DEFINED _PUSH_REQUIRED_VARS_COUNTER) SET(_PUSH_REQUIRED_VARS_COUNTER 0) ENDIF(NOT DEFINED _PUSH_REQUIRED_VARS_COUNTER) MATH(EXPR _PUSH_REQUIRED_VARS_COUNTER "${_PUSH_REQUIRED_VARS_COUNTER}+1") SET(_CMAKE_REQUIRED_INCLUDES_SAVE_${_PUSH_REQUIRED_VARS_COUNTER} ${CMAKE_REQUIRED_INCLUDES}) SET(_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_PUSH_REQUIRED_VARS_COUNTER} ${CMAKE_REQUIRED_DEFINITIONS}) SET(_CMAKE_REQUIRED_LIBRARIES_SAVE_${_PUSH_REQUIRED_VARS_COUNTER} ${CMAKE_REQUIRED_LIBRARIES}) SET(_CMAKE_REQUIRED_FLAGS_SAVE_${_PUSH_REQUIRED_VARS_COUNTER} ${CMAKE_REQUIRED_FLAGS}) ENDMACRO(MACRO_PUSH_REQUIRED_VARS) MACRO(MACRO_POP_REQUIRED_VARS) # don't pop more than we pushed IF("${_PUSH_REQUIRED_VARS_COUNTER}" GREATER "0") SET(CMAKE_REQUIRED_INCLUDES ${_CMAKE_REQUIRED_INCLUDES_SAVE_${_PUSH_REQUIRED_VARS_COUNTER}}) SET(CMAKE_REQUIRED_DEFINITIONS ${_CMAKE_REQUIRED_DEFINITIONS_SAVE_${_PUSH_REQUIRED_VARS_COUNTER}}) SET(CMAKE_REQUIRED_LIBRARIES ${_CMAKE_REQUIRED_LIBRARIES_SAVE_${_PUSH_REQUIRED_VARS_COUNTER}}) SET(CMAKE_REQUIRED_FLAGS ${_CMAKE_REQUIRED_FLAGS_SAVE_${_PUSH_REQUIRED_VARS_COUNTER}}) MATH(EXPR _PUSH_REQUIRED_VARS_COUNTER "${_PUSH_REQUIRED_VARS_COUNTER}-1") ENDIF("${_PUSH_REQUIRED_VARS_COUNTER}" GREATER "0") ENDMACRO(MACRO_POP_REQUIRED_VARS)