diff options
Diffstat (limited to 'Modules/CheckIncludeFiles.cmake')
-rw-r--r-- | Modules/CheckIncludeFiles.cmake | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Modules/CheckIncludeFiles.cmake b/Modules/CheckIncludeFiles.cmake new file mode 100644 index 000000000..a94644e6a --- /dev/null +++ b/Modules/CheckIncludeFiles.cmake @@ -0,0 +1,82 @@ +# - Check if the files can be included +# +# CHECK_INCLUDE_FILES(INCLUDE VARIABLE) +# +# INCLUDE - list of files to include +# VARIABLE - variable to return result +# +# 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 + +#============================================================================= +# Copyright 2003-2012 Kitware, Inc. +# +# 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.) + +MACRO(CHECK_INCLUDE_FILES INCLUDE VARIABLE) + IF("${VARIABLE}" MATCHES "^${VARIABLE}$") + SET(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n") + IF(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_INCLUDE_FILES_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}") + ELSE(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_INCLUDE_FILES_INCLUDE_DIRS) + ENDIF(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_INCLUDE_FILES_CONTENT "/* */\n") + SET(MACRO_CHECK_INCLUDE_FILES_FLAGS ${CMAKE_REQUIRED_FLAGS}) + FOREACH(FILE ${INCLUDE}) + SET(CMAKE_CONFIGURABLE_FILE_CONTENT + "${CMAKE_CONFIGURABLE_FILE_CONTENT}#include <${FILE}>\n") + ENDFOREACH(FILE) + SET(CMAKE_CONFIGURABLE_FILE_CONTENT + "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n\nint main(){return 0;}\n") + CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in" + "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.c" @ONLY IMMEDIATE) + + SET(_INCLUDE ${INCLUDE}) # remove empty elements + IF("${_INCLUDE}" MATCHES "^([^;]+);.+;([^;]+)$") + LIST(LENGTH _INCLUDE _INCLUDE_LEN) + SET(_description "${_INCLUDE_LEN} include files ${CMAKE_MATCH_1}, ..., ${CMAKE_MATCH_2}") + ELSEIF("${_INCLUDE}" MATCHES "^([^;]+);([^;]+)$") + SET(_description "include files ${CMAKE_MATCH_1}, ${CMAKE_MATCH_2}") + ELSE() + SET(_description "include file ${_INCLUDE}") + ENDIF() + + MESSAGE(STATUS "Looking for ${_description}") + TRY_COMPILE(${VARIABLE} + ${CMAKE_BINARY_DIR} + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.c + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} + CMAKE_FLAGS + -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILES_FLAGS} + "${CHECK_INCLUDE_FILES_INCLUDE_DIRS}" + OUTPUT_VARIABLE OUTPUT) + IF(${VARIABLE}) + MESSAGE(STATUS "Looking for ${_description} - found") + SET(${VARIABLE} 1 CACHE INTERNAL "Have include ${INCLUDE}") + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Determining if files ${INCLUDE} " + "exist passed with the following output:\n" + "${OUTPUT}\n\n") + ELSE(${VARIABLE}) + MESSAGE(STATUS "Looking for ${_description} - not found.") + SET(${VARIABLE} "" CACHE INTERNAL "Have includes ${INCLUDE}") + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Determining if files ${INCLUDE} " + "exist failed with the following output:\n" + "${OUTPUT}\nSource:\n${CMAKE_CONFIGURABLE_FILE_CONTENT}\n") + ENDIF(${VARIABLE}) + ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$") +ENDMACRO(CHECK_INCLUDE_FILES) |