# - Check if the protoype we expect is correct. # check_prototype_definition(FUNCTION PROTOTYPE RETURN HEADER VARIABLE) # FUNCTION - The name of the function (used to check if prototype exists) # PROTOTYPE- The prototype to check. # RETURN - The return value of the function. # HEADER - The header files required. # VARIABLE - The variable to store the result. # Example: # check_prototype_definition(getpwent_r # "struct passwd *getpwent_r(struct passwd *src, char *buf, int buflen)" # "NULL" # "unistd.h;pwd.h" # SOLARIS_GETPWENT_R) # The following variables may be set before calling this macro to # modify the way the check is run: # # CMAKE_REQUIRED_FLAGS = string of compile command line flags # CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) # CMAKE_REQUIRED_INCLUDES = list of include directories # CMAKE_REQUIRED_LIBRARIES = list of libraries to link #============================================================================= # Copyright 2005-2009 Kitware, Inc. # Copyright 2010-2011 Andreas Schneider # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. # # This software is distributed WITHOUT ANY WARRANTY; without even the # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # See the License for more information. #============================================================================= # (To distribute this file outside of CMake, substitute the full # License text for the above reference.) # get_filename_component(__check_proto_def_dir "${CMAKE_CURRENT_LIST_FILE}" PATH) function(CHECK_PROTOTYPE_DEFINITION _FUNCTION _PROTOTYPE _RETURN _HEADER _VARIABLE) if ("${_VARIABLE}" MATCHES "^${_VARIABLE}$") set(CHECK_PROTOTYPE_DEFINITION_CONTENT "/* */\n") set(CHECK_PROTOTYPE_DEFINITION_FLAGS ${CMAKE_REQUIRED_FLAGS}) if (CMAKE_REQUIRED_LIBRARIES) set(CHECK_PROTOTYPE_DEFINITION_LIBS LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}) else() set(CHECK_PROTOTYPE_DEFINITION_LIBS) endif() if (CMAKE_REQUIRED_INCLUDES) set(CMAKE_SYMBOL_EXISTS_INCLUDES "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}") else() set(CMAKE_SYMBOL_EXISTS_INCLUDES) endif() foreach(_FILE ${_HEADER}) set(CHECK_PROTOTYPE_DEFINITION_HEADER "${CHECK_PROTOTYPE_DEFINITION_HEADER}#include <${_FILE}>\n") endforeach() set(CHECK_PROTOTYPE_DEFINITION_SYMBOL ${_FUNCTION}) set(CHECK_PROTOTYPE_DEFINITION_PROTO ${_PROTOTYPE}) set(CHECK_PROTOTYPE_DEFINITION_RETURN ${_RETURN}) configure_file("${__check_proto_def_dir}/CheckPrototypeDefinition.c.in" "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c" @ONLY) file(READ ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c _SOURCE) try_compile(${_VARIABLE} ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckPrototypeDefinition.c COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} ${CHECK_PROTOTYPE_DEFINITION_LIBS} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${CHECK_PROTOTYPE_DEFINITION_FLAGS} "${CMAKE_SYMBOL_EXISTS_INCLUDES}" OUTPUT_VARIABLE OUTPUT) if (${_VARIABLE}) set(${_VARIABLE} 1 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}") message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - True") file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} passed with the following output:\n" "${OUTPUT}\n\n") else () message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - False") set(${_VARIABLE} 0 CACHE INTERNAL "Have correct prototype for ${_FUNCTION}") file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log "Determining if the prototype ${_FUNCTION} exists for ${_VARIABLE} failed with the following output:\n" "${OUTPUT}\n\n${_SOURCE}\n\n") endif () endif() endfunction()