summaryrefslogtreecommitdiff
path: root/Modules/CheckIncludeFiles.cmake
diff options
context:
space:
mode:
Diffstat (limited to 'Modules/CheckIncludeFiles.cmake')
-rw-r--r--Modules/CheckIncludeFiles.cmake82
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)