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