# 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 © 2006, 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_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)