| #.rst: |
| # CheckPrototypeDefinition |
| # ------------------------ |
| # |
| # 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. |
| # Will be created as an internal cache variable. |
| # |
| # 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 |
| # CMAKE_REQUIRED_QUIET = execute quietly without messages |
| |
| #============================================================================= |
| # Copyright 2005-2009 Kitware, Inc. |
| # Copyright 2010-2011 Andreas Schneider <asn@cryptomilk.org> |
| # |
| # 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 (NOT DEFINED ${_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}") |
| if(NOT CMAKE_REQUIRED_QUIET) |
| message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - True") |
| endif() |
| 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 () |
| if(NOT CMAKE_REQUIRED_QUIET) |
| message(STATUS "Checking prototype ${_FUNCTION} for ${_VARIABLE} - False") |
| endif() |
| set(${_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() |