CMake/Modules/UseSWIG.cmake

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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: ${SWIG_MODULE_name_REAL_NAME}.
# Set Source files propertis such as CPLUSPLUS and SWIG_FLAGS to specify
# special behavior of SWIG. Also global CMAKE_SWIG_FLAGS can be used to add
# special flags to all swig calls.
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# Another special variable is CMAKE_SWIG_OUTDIR, it allows one to specify
# where to write all the swig generated module (swig -outdir option)
SET(SWIG_CXX_EXTENSION "cxx")
SET(SWIG_EXTRA_LIBRARIES "")
SET(SWIG_PYTHON_EXTRA_FILE_EXTENSION "py")
#
# For given swig module initialize variables associated with it
#
MACRO(SWIG_MODULE_INITIALIZE name language)
STRING(TOUPPER "${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 "${swig_lowercase_language}")
IF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xUNKNOWNx$")
MESSAGE(FATAL_ERROR "SWIG Error: Language \"${language}\" not found")
ENDIF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xUNKNOWNx$")
SET(SWIG_MODULE_${name}_REAL_NAME "${name}")
IF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xPYTHONx$")
SET(SWIG_MODULE_${name}_REAL_NAME "_${name}")
ENDIF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xPYTHONx$")
IF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xPERLx$")
SET(SWIG_MODULE_${name}_EXTRA_FLAGS "-shadow")
ENDIF("x${SWIG_MODULE_${name}_LANGUAGE}x" MATCHES "^xPERLx$")
ENDMACRO(SWIG_MODULE_INITIALIZE)
#
# 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)
FOREACH(it ${SWIG_PYTHON_EXTRA_FILE_EXTENSION})
SET(outfiles ${outfiles}
"${generatedpath}/${infile}.${it}")
ENDFOREACH(it)
ENDMACRO(SWIG_GET_EXTRA_OUTPUT_FILES)
#
# 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("${swig_source_file_flags}" STREQUAL "NOTFOUND")
SET(swig_source_file_fullname "${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(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_SOURCE_DIR}")
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(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_BINARY_DIR}")
SET(swig_source_file_relative_path "${swig_source_file_path}")
IF(swig_source_file_generated)
SET(swig_source_file_fullname "${CMAKE_CURRENT_BINARY_DIR}/${infile}")
ELSE(swig_source_file_generated)
SET(swig_source_file_fullname "${CMAKE_CURRENT_SOURCE_DIR}/${infile}")
ENDIF(swig_source_file_generated)
ENDIF(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_BINARY_DIR}")
ENDIF(${swig_source_file_path} MATCHES "^${CMAKE_CURRENT_SOURCE_DIR}")
SET(swig_generated_file_fullname
"${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(swig_source_file_relative_path)
SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
swig_extra_generated_files
"${swig_generated_file_fullname}"
"${swig_source_file_name_we}")
SET(swig_generated_file_fullname
"${swig_generated_file_fullname}/${swig_source_file_name_we}")
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# 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
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"${swig_generated_file_fullname}${SWIG_MODULE_${name}_LANGUAGE}_wrap")
IF(swig_source_file_cplusplus)
SET(swig_generated_file_fullname
"${swig_generated_file_fullname}.${SWIG_CXX_EXTENSION}")
ELSE(swig_source_file_cplusplus)
SET(swig_generated_file_fullname
"${swig_generated_file_fullname}.c")
ENDIF(swig_source_file_cplusplus)
#MESSAGE("Full path to source file: ${swig_source_file_fullname}")
#MESSAGE("Full path to the output file: ${swig_generated_file_fullname}")
GET_DIRECTORY_PROPERTY(cmake_include_directories INCLUDE_DIRECTORIES)
SET(swig_include_dirs)
FOREACH(it ${cmake_include_directories})
SET(swig_include_dirs ${swig_include_dirs} "-I${it}")
ENDFOREACH(it)
SET(swig_special_flags)
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# default is c, so add c++ flag if it is c++
IF(swig_source_file_cplusplus)
SET(swig_special_flags ${swig_special_flags} "-c++")
ENDIF(swig_source_file_cplusplus)
SET(swig_extra_flags)
IF(SWIG_MODULE_${name}_EXTRA_FLAGS)
SET(swig_extra_flags ${swig_extra_flags} ${SWIG_MODULE_${name}_EXTRA_FLAGS})
ENDIF(SWIG_MODULE_${name}_EXTRA_FLAGS)
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# If CMAKE_SWIG_OUTDIR was specified then pass it to -outdir
IF(CMAKE_SWIG_OUTDIR)
ADD_CUSTOM_COMMAND(
OUTPUT "${swig_generated_file_fullname}"
COMMAND "${SWIG_EXECUTABLE}"
ARGS "-${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}"
${swig_source_file_flags}
${CMAKE_SWIG_FLAGS}
-outdir ${CMAKE_SWIG_OUTDIR}
${swig_special_flags}
${swig_extra_flags}
${swig_include_dirs}
-o "${swig_generated_file_fullname}"
"${swig_source_file_fullname}"
MAIN_DEPENDENCY "${swig_source_file_fullname}"
COMMENT "Swig source")
ELSE(CMAKE_SWIG_OUTDIR)
ADD_CUSTOM_COMMAND(
OUTPUT "${swig_generated_file_fullname}"
COMMAND "${SWIG_EXECUTABLE}"
ARGS "-${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}"
${swig_source_file_flags}
${CMAKE_SWIG_FLAGS}
${swig_outdir_flags}
${swig_special_flags}
${swig_extra_flags}
${swig_include_dirs}
-o "${swig_generated_file_fullname}"
"${swig_source_file_fullname}"
MAIN_DEPENDENCY "${swig_source_file_fullname}"
COMMENT "Swig source")
ENDIF(CMAKE_SWIG_OUTDIR)
SET_SOURCE_FILES_PROPERTIES("${swig_generated_file_fullname}"
PROPERTIES GENERATED 1)
SET(${outfiles} "${swig_generated_file_fullname}")
ENDMACRO(SWIG_ADD_SOURCE_TO_MODULE)
#
# Create Swig module
#
MACRO(SWIG_ADD_MODULE name language)
SWIG_MODULE_INITIALIZE(${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(${it} MATCHES ".*\\.i$")
SET(swig_other_sources ${swig_other_sources} "${it}")
ENDIF(${it} MATCHES ".*\\.i$")
ENDFOREACH(it)
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(it)
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GET_DIRECTORY_PROPERTY(swig_extra_clean_files ADDITIONAL_MAKE_CLEAN_FILES)
SET_DIRECTORY_PROPERTIES(PROPERTIES
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ADDITIONAL_MAKE_CLEAN_FILES "${swig_extra_clean_files};${swig_generated_sources}")
ADD_LIBRARY(${SWIG_MODULE_${name}_REAL_NAME}
MODULE
${swig_generated_sources}
${swig_other_sources})
SET_TARGET_PROPERTIES(${SWIG_MODULE_${name}_REAL_NAME}
PROPERTIES PREFIX "")
ENDMACRO(SWIG_ADD_MODULE)
#
# Like TARGET_LINK_LIBRARIES but for swig modules
#
MACRO(SWIG_LINK_LIBRARIES name)
IF(SWIG_MODULE_${name}_REAL_NAME)
TARGET_LINK_LIBRARIES(${SWIG_MODULE_${name}_REAL_NAME} ${ARGN})
ELSE(SWIG_MODULE_${name}_REAL_NAME)
MESSAGE(SEND_ERROR "Cannot find Swig library \"${name}\".")
ENDIF(SWIG_MODULE_${name}_REAL_NAME)
ENDMACRO(SWIG_LINK_LIBRARIES name)
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