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+# - SWIG module for CMake
+# Defines the following macros:
+# SWIG_ADD_MODULE(name language [ files ])
+# - Define swig module with given name and specified language
+# SWIG_LINK_LIBRARIES(name [ libraries ])
+# - Link libraries to swig module
+# All other macros are for internal use only.
+# To get the actual name of the swig module,
+# use: ${SWIG_MODULE_${name}_REAL_NAME}.
+# Set Source files properties such as CPLUSPLUS and SWIG_FLAGS to specify
+# special behavior of SWIG. Also global CMAKE_SWIG_FLAGS can be used to add
+# special flags to all swig calls.
+# Another special variable is CMAKE_SWIG_OUTDIR, it allows one to specify
+# where to write all the swig generated module (swig -outdir option)
+# The name-specific variable SWIG_MODULE_<name>_EXTRA_DEPS may be used
+# to specify extra dependencies for the generated modules.
+# If the source file generated by swig need some special flag you can use
+# set_source_files_properties( ${swig_generated_file_fullname}
+# PROPERTIES COMPILE_FLAGS "-bla")
+
+
+#=============================================================================
+# Copyright 2004-2009 Kitware, Inc.
+# Copyright 2009 Mathieu Malaterre <mathieu.malaterre@gmail.com>
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+set(SWIG_CXX_EXTENSION "cxx")
+set(SWIG_EXTRA_LIBRARIES "")
+
+set(SWIG_PYTHON_EXTRA_FILE_EXTENSION "py")
+
+#
+# For given swig module initialize variables associated with it
+#
+macro(SWIG_MODULE_INITIALIZE name language)
+ string(TOUPPER "${language}" swig_uppercase_language)
+ string(TOLOWER "${language}" swig_lowercase_language)
+ set(SWIG_MODULE_${name}_LANGUAGE "${swig_uppercase_language}")
+ set(SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG "${swig_lowercase_language}")
+
+ set(SWIG_MODULE_${name}_REAL_NAME "${name}")
+ if("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "UNKNOWN")
+ message(FATAL_ERROR "SWIG Error: Language \"${language}\" not found")
+ elseif("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "PYTHON")
+ # when swig is used without the -interface it will produce in the module.py
+ # a 'import _modulename' statement, which implies having a corresponding
+ # _modulename.so (*NIX), _modulename.pyd (Win32).
+ set(SWIG_MODULE_${name}_REAL_NAME "_${name}")
+ elseif("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "PERL")
+ set(SWIG_MODULE_${name}_EXTRA_FLAGS "-shadow")
+ endif()
+endmacro()
+
+#
+# For a given language, input file, and output file, determine extra files that
+# will be generated. This is internal swig macro.
+#
+
+macro(SWIG_GET_EXTRA_OUTPUT_FILES language outfiles generatedpath infile)
+ set(${outfiles} "")
+ get_source_file_property(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename
+ ${infile} SWIG_MODULE_NAME)
+ if(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename STREQUAL "NOTFOUND")
+ get_filename_component(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename "${infile}" NAME_WE)
+ endif()
+ foreach(it ${SWIG_${language}_EXTRA_FILE_EXTENSION})
+ set(${outfiles} ${${outfiles}}
+ "${generatedpath}/${SWIG_GET_EXTRA_OUTPUT_FILES_module_basename}.${it}")
+ endforeach()
+endmacro()
+
+#
+# Take swig (*.i) file and add proper custom commands for it
+#
+macro(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
+ set(swig_full_infile ${infile})
+ get_filename_component(swig_source_file_path "${infile}" PATH)
+ get_filename_component(swig_source_file_name_we "${infile}" NAME_WE)
+ get_source_file_property(swig_source_file_generated ${infile} GENERATED)
+ get_source_file_property(swig_source_file_cplusplus ${infile} CPLUSPLUS)
+ get_source_file_property(swig_source_file_flags ${infile} SWIG_FLAGS)
+ if("${swig_source_file_flags}" STREQUAL "NOTFOUND")
+ set(swig_source_file_flags "")
+ endif()
+ set(swig_source_file_fullname "${infile}")
+ if(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_SOURCE_DIR}")
+ string(REGEX REPLACE
+ "^${CMAKE_CURRENT_SOURCE_DIR}" ""
+ swig_source_file_relative_path
+ "${swig_source_file_path}")
+ else()
+ if(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_BINARY_DIR}")
+ string(REGEX REPLACE
+ "^${CMAKE_CURRENT_BINARY_DIR}" ""
+ swig_source_file_relative_path
+ "${swig_source_file_path}")
+ set(swig_source_file_generated 1)
+ else()
+ set(swig_source_file_relative_path "${swig_source_file_path}")
+ if(swig_source_file_generated)
+ set(swig_source_file_fullname "${CMAKE_CURRENT_BINARY_DIR}/${infile}")
+ else()
+ set(swig_source_file_fullname "${CMAKE_CURRENT_SOURCE_DIR}/${infile}")
+ endif()
+ endif()
+ endif()
+
+ set(swig_generated_file_fullname
+ "${CMAKE_CURRENT_BINARY_DIR}")
+ if(swig_source_file_relative_path)
+ set(swig_generated_file_fullname
+ "${swig_generated_file_fullname}/${swig_source_file_relative_path}")
+ endif()
+ # If CMAKE_SWIG_OUTDIR was specified then pass it to -outdir
+ if(CMAKE_SWIG_OUTDIR)
+ set(swig_outdir ${CMAKE_SWIG_OUTDIR})
+ else()
+ set(swig_outdir ${CMAKE_CURRENT_BINARY_DIR})
+ endif()
+ SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
+ swig_extra_generated_files
+ "${swig_outdir}"
+ "${infile}")
+ set(swig_generated_file_fullname
+ "${swig_generated_file_fullname}/${swig_source_file_name_we}")
+ # add the language into the name of the file (i.e. TCL_wrap)
+ # this allows for the same .i file to be wrapped into different languages
+ set(swig_generated_file_fullname
+ "${swig_generated_file_fullname}${SWIG_MODULE_${name}_LANGUAGE}_wrap")
+
+ if(swig_source_file_cplusplus)
+ set(swig_generated_file_fullname
+ "${swig_generated_file_fullname}.${SWIG_CXX_EXTENSION}")
+ else()
+ set(swig_generated_file_fullname
+ "${swig_generated_file_fullname}.c")
+ endif()
+
+ # Shut up some warnings from poor SWIG code generation that we
+ # can do nothing about, when this flag is available
+ include(CheckCXXCompilerFlag)
+ check_cxx_compiler_flag("-Wno-unused-but-set-variable" HAVE_WNO_UNUSED_BUT_SET_VARIABLE)
+ if(HAVE_WNO_UNUSED_BUT_SET_VARIABLE)
+ set_source_files_properties(${swig_generated_file_fullname}
+ PROPERTIES COMPILE_FLAGS "-Wno-unused-but-set-variable")
+ endif(HAVE_WNO_UNUSED_BUT_SET_VARIABLE)
+
+ get_directory_property(cmake_include_directories INCLUDE_DIRECTORIES)
+ list(REMOVE_DUPLICATES cmake_include_directories)
+ set(swig_include_dirs)
+ foreach(it ${cmake_include_directories})
+ set(swig_include_dirs ${swig_include_dirs} "-I${it}")
+ endforeach()
+
+ set(swig_special_flags)
+ # default is c, so add c++ flag if it is c++
+ if(swig_source_file_cplusplus)
+ set(swig_special_flags ${swig_special_flags} "-c++")
+ endif()
+ set(swig_extra_flags)
+ if(SWIG_MODULE_${name}_EXTRA_FLAGS)
+ set(swig_extra_flags ${swig_extra_flags} ${SWIG_MODULE_${name}_EXTRA_FLAGS})
+ endif()
+
+ # hack to work around CMake bug in add_custom_command with multiple OUTPUT files
+
+ file(RELATIVE_PATH reldir ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR})
+ execute_process(
+ COMMAND ${PYTHON_EXECUTABLE} -c "import re, hashlib
+unique = hashlib.md5('${reldir}${ARGN}').hexdigest()[:5]
+print(re.sub('\\W', '_', '${name} ${reldir} ' + unique))"
+ OUTPUT_VARIABLE _target OUTPUT_STRIP_TRAILING_WHITESPACE
+ )
+
+ file(
+ WRITE ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp.in
+ "int main(void){return 0;}\n"
+ )
+
+ # create dummy dependencies
+ add_custom_command(
+ OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp
+ COMMAND ${CMAKE_COMMAND} -E copy
+ ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp.in
+ ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp
+ DEPENDS "${swig_source_file_fullname}" ${SWIG_MODULE_${name}_EXTRA_DEPS}
+ COMMENT ""
+ )
+
+ # create the dummy target
+ add_executable(${_target} ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp)
+
+ # add a custom command to the dummy target
+ add_custom_command(
+ TARGET ${_target}
+ # Let's create the ${swig_outdir} at execution time, in case dir contains $(OutDir)
+ COMMAND ${CMAKE_COMMAND} -E make_directory ${swig_outdir}
+ COMMAND "${SWIG_EXECUTABLE}"
+ ARGS "-${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}"
+ ${swig_source_file_flags}
+ ${CMAKE_SWIG_FLAGS}
+ -outdir ${swig_outdir}
+ ${swig_special_flags}
+ ${swig_extra_flags}
+ ${swig_include_dirs}
+ -o "${swig_generated_file_fullname}"
+ "${swig_source_file_fullname}"
+ COMMENT "Swig source"
+ )
+
+ #add dummy independent dependencies from the _target to each file
+ #that will be generated by the SWIG command above
+
+ set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files})
+
+ foreach(swig_gen_file ${${outfiles}})
+ add_custom_command(
+ OUTPUT ${swig_gen_file}
+ COMMAND "${CMAKE_COMMAND}" -E touch_nocreate "${swig_gen_file}"
+ DEPENDS ${_target}
+ COMMENT "dummy command to show ${_target} dependency of ${swig_gen_file}"
+ )
+ endforeach()
+
+ set_source_files_properties(
+ ${outfiles} PROPERTIES GENERATED 1
+ )
+
+endmacro()
+
+#
+# Create Swig module
+#
+macro(SWIG_ADD_MODULE name language)
+ SWIG_MODULE_INITIALIZE(${name} ${language})
+ set(swig_dot_i_sources)
+ set(swig_other_sources)
+ foreach(it ${ARGN})
+ if(${it} MATCHES ".*\\.i$")
+ set(swig_dot_i_sources ${swig_dot_i_sources} "${it}")
+ else()
+ set(swig_other_sources ${swig_other_sources} "${it}")
+ endif()
+ endforeach()
+
+ set(swig_generated_sources)
+ foreach(it ${swig_dot_i_sources})
+ SWIG_ADD_SOURCE_TO_MODULE(${name} swig_generated_source ${it})
+ set(swig_generated_sources ${swig_generated_sources} "${swig_generated_source}")
+ endforeach()
+ get_directory_property(swig_extra_clean_files ADDITIONAL_MAKE_CLEAN_FILES)
+ set_directory_properties(PROPERTIES
+ ADDITIONAL_MAKE_CLEAN_FILES "${swig_extra_clean_files};${swig_generated_sources}")
+ add_library(${SWIG_MODULE_${name}_REAL_NAME}
+ MODULE
+ ${swig_generated_sources}
+ ${swig_other_sources})
+ string(TOLOWER "${language}" swig_lowercase_language)
+ if ("${swig_lowercase_language}" STREQUAL "java")
+ if (APPLE)
+ # In java you want:
+ # System.loadLibrary("LIBRARY");
+ # then JNI will look for a library whose name is platform dependent, namely
+ # MacOS : libLIBRARY.jnilib
+ # Windows: LIBRARY.dll
+ # Linux : libLIBRARY.so
+ set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".jnilib")
+ endif ()
+ endif ()
+ if ("${swig_lowercase_language}" STREQUAL "python")
+ # this is only needed for the python case where a _modulename.so is generated
+ set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES PREFIX "")
+ # Python extension modules on Windows must have the extension ".pyd"
+ # instead of ".dll" as of Python 2.5. Older python versions do support
+ # this suffix.
+ # http://docs.python.org/whatsnew/ports.html#SECTION0001510000000000000000
+ # <quote>
+ # Windows: .dll is no longer supported as a filename extension for extension modules.
+ # .pyd is now the only filename extension that will be searched for.
+ # </quote>
+ if(WIN32 AND NOT CYGWIN)
+ set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".pyd")
+ endif()
+ endif ()
+endmacro()
+
+#
+# Like TARGET_LINK_LIBRARIES but for swig modules
+#
+macro(SWIG_LINK_LIBRARIES name)
+ if(SWIG_MODULE_${name}_REAL_NAME)
+ target_link_libraries(${SWIG_MODULE_${name}_REAL_NAME} ${ARGN})
+ else()
+ message(SEND_ERROR "Cannot find Swig library \"${name}\".")
+ endif()
+endmacro()