UseSWIG.cmake 10.1 KB
Newer Older
1 2 3 4 5 6
#.rst:
# UseSWIG
# -------
#
# SWIG module for CMake
#
7
# Defines the following macros:
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
#
# ::
#
#    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
26
# set_source_files_properties( ${swig_generated_file_fullname}
27 28 29 30
#
# ::
#
#         PROPERTIES COMPILE_FLAGS "-bla")
31

32

33 34
#=============================================================================
# Copyright 2004-2009 Kitware, Inc.
35
# Copyright 2009 Mathieu Malaterre <mathieu.malaterre@gmail.com>
36 37 38 39 40 41 42 43
#
# 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.
#=============================================================================
44
# (To distribute this file outside of CMake, substitute the full
45 46
#  License text for the above reference.)

47 48
set(SWIG_CXX_EXTENSION "cxx")
set(SWIG_EXTRA_LIBRARIES "")
49

50
set(SWIG_PYTHON_EXTRA_FILE_EXTENSION "py")
51 52 53 54

#
# For given swig module initialize variables associated with it
#
55 56 57 58 59 60 61
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}")
62 63 64
  if (CMAKE_SWIG_FLAGS MATCHES "-noproxy")
    set (SWIG_MODULE_${name}_NOPROXY TRUE)
  endif ()
65 66
  if("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "UNKNOWN")
    message(FATAL_ERROR "SWIG Error: Language \"${language}\" not found")
67 68 69 70
  elseif("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "PYTHON" AND NOT SWIG_MODULE_${name}_NOPROXY)
    # swig will produce a module.py containing an 'import _modulename' statement,
    # which implies having a corresponding _modulename.so (*NIX), _modulename.pyd (Win32),
    # unless the -noproxy flag is used
71 72 73
    set(SWIG_MODULE_${name}_REAL_NAME "_${name}")
  elseif("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "PERL")
    set(SWIG_MODULE_${name}_EXTRA_FLAGS "-shadow")
74 75 76 77
  elseif("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "CSHARP")
    # This makes sure that the name used in the generated DllImport
    # matches the library name created by CMake
    set(SWIG_MODULE_${name}_EXTRA_FLAGS "-dllimport;${name}")
78
  endif()
79
endmacro()
80 81 82

#
# For a given language, input file, and output file, determine extra files that
83
# will be generated. This is internal swig macro.
84 85
#

86 87 88
macro(SWIG_GET_EXTRA_OUTPUT_FILES language outfiles generatedpath infile)
  set(${outfiles} "")
  get_source_file_property(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename
Bill Hoffman's avatar
Bill Hoffman committed
89
    ${infile} SWIG_MODULE_NAME)
90 91
  if(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename STREQUAL "NOTFOUND")
    get_filename_component(SWIG_GET_EXTRA_OUTPUT_FILES_module_basename "${infile}" NAME_WE)
92
  endif()
93 94
  foreach(it ${SWIG_${language}_EXTRA_FILE_EXTENSION})
    set(${outfiles} ${${outfiles}}
Bill Hoffman's avatar
Bill Hoffman committed
95
      "${generatedpath}/${SWIG_GET_EXTRA_OUTPUT_FILES_module_basename}.${it}")
96 97
  endforeach()
endmacro()
98 99 100 101

#
# Take swig (*.i) file and add proper custom commands for it
#
102 103 104 105 106 107 108 109
macro(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
  set(swig_full_infile ${infile})
  get_filename_component(swig_source_file_name_we "${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 "")
110
  endif()
111
  get_filename_component(swig_source_file_fullname "${infile}" ABSOLUTE)
112

Ken Martin's avatar
Ken Martin committed
113
  # If CMAKE_SWIG_OUTDIR was specified then pass it to -outdir
114 115
  if(CMAKE_SWIG_OUTDIR)
    set(swig_outdir ${CMAKE_SWIG_OUTDIR})
116
  else()
117
    set(swig_outdir ${CMAKE_CURRENT_BINARY_DIR})
118
  endif()
119 120
  SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
    swig_extra_generated_files
Ken Martin's avatar
Ken Martin committed
121
    "${swig_outdir}"
Bill Hoffman's avatar
Bill Hoffman committed
122
    "${infile}")
123
  set(swig_generated_file_fullname
124
    "${swig_outdir}/${swig_source_file_name_we}")
Bill Hoffman's avatar
Bill Hoffman committed
125 126
  # add the language into the name of the file (i.e. TCL_wrap)
  # this allows for the same .i file to be wrapped into different languages
127
  set(swig_generated_file_fullname
Bill Hoffman's avatar
Bill Hoffman committed
128
    "${swig_generated_file_fullname}${SWIG_MODULE_${name}_LANGUAGE}_wrap")
129

130 131
  if(swig_source_file_cplusplus)
    set(swig_generated_file_fullname
132
      "${swig_generated_file_fullname}.${SWIG_CXX_EXTENSION}")
133
  else()
134
    set(swig_generated_file_fullname
135
      "${swig_generated_file_fullname}.c")
136
  endif()
137

138 139 140
  #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)
141
  list(REMOVE_DUPLICATES cmake_include_directories)
142 143 144
  set(swig_include_dirs)
  foreach(it ${cmake_include_directories})
    set(swig_include_dirs ${swig_include_dirs} "-I${it}")
145
  endforeach()
146

147
  set(swig_special_flags)
Bill Hoffman's avatar
Bill Hoffman committed
148
  # default is c, so add c++ flag if it is c++
149 150
  if(swig_source_file_cplusplus)
    set(swig_special_flags ${swig_special_flags} "-c++")
151
  endif()
152 153 154
  set(swig_extra_flags)
  if(SWIG_MODULE_${name}_EXTRA_FLAGS)
    set(swig_extra_flags ${swig_extra_flags} ${SWIG_MODULE_${name}_EXTRA_FLAGS})
155
  endif()
156
  add_custom_command(
Ken Martin's avatar
Ken Martin committed
157
    OUTPUT "${swig_generated_file_fullname}" ${swig_extra_generated_files}
158 159
    # Let's create the ${swig_outdir} at execution time, in case dir contains $(OutDir)
    COMMAND ${CMAKE_COMMAND} -E make_directory ${swig_outdir}
Ken Martin's avatar
Ken Martin committed
160 161 162 163 164 165 166 167 168 169 170 171
    COMMAND "${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}"
    "${swig_source_file_fullname}"
    MAIN_DEPENDENCY "${swig_source_file_fullname}"
    DEPENDS ${SWIG_MODULE_${name}_EXTRA_DEPS}
172
    COMMENT "Swig source")
173
  set_source_files_properties("${swig_generated_file_fullname}" ${swig_extra_generated_files}
174
    PROPERTIES GENERATED 1)
175
  set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files})
176
endmacro()
177 178 179 180

#
# Create Swig module
#
181
macro(SWIG_ADD_MODULE name language)
182
  SWIG_MODULE_INITIALIZE(${name} ${language})
183 184 185 186 187
  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}")
188
    else()
189
      set(swig_other_sources ${swig_other_sources} "${it}")
190 191
    endif()
  endforeach()
192 193 194

  set(swig_generated_sources)
  foreach(it ${swig_dot_i_sources})
195
    SWIG_ADD_SOURCE_TO_MODULE(${name} swig_generated_source ${it})
196
    set(swig_generated_sources ${swig_generated_sources} "${swig_generated_source}")
197
  endforeach()
198 199
  get_directory_property(swig_extra_clean_files ADDITIONAL_MAKE_CLEAN_FILES)
  set_directory_properties(PROPERTIES
Bill Hoffman's avatar
Bill Hoffman committed
200
    ADDITIONAL_MAKE_CLEAN_FILES "${swig_extra_clean_files};${swig_generated_sources}")
201
  add_library(${SWIG_MODULE_${name}_REAL_NAME}
202 203 204
    MODULE
    ${swig_generated_sources}
    ${swig_other_sources})
205
  string(TOLOWER "${language}" swig_lowercase_language)
206 207 208 209
  if ("${swig_lowercase_language}" STREQUAL "octave")
    set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES PREFIX "")
    set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".oct")
  elseif ("${swig_lowercase_language}" STREQUAL "java")
210
    if (APPLE)
211 212 213 214 215 216
        # 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
217
        set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".jnilib")
218
      endif ()
219
  elseif ("${swig_lowercase_language}" STREQUAL "python")
220
    # this is only needed for the python case where a _modulename.so is generated
221
    set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES PREFIX "")
222 223 224 225 226 227 228 229
    # Python extension modules on Windows must have the extension ".pyd"
    # instead of ".dll" as of Python 2.5.  Older python versions do support
    # this suffix.
    # http://docs.python.org/whatsnew/ports.html#SECTION0001510000000000000000
    # <quote>
    # Windows: .dll is no longer supported as a filename extension for extension modules.
    # .pyd is now the only filename extension that will be searched for.
    # </quote>
230 231
    if(WIN32 AND NOT CYGWIN)
      set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".pyd")
232
    endif()
233 234 235 236 237 238 239 240 241 242 243
  elseif ("${swig_lowercase_language}" STREQUAL "ruby")
    # In ruby you want:
    #      require 'LIBRARY'
    # then ruby will look for a library whose name is platform dependent, namely
    #   MacOS  : LIBRARY.bundle
    #   Windows: LIBRARY.dll
    #   Linux  : LIBRARY.so
    set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES PREFIX "")
    if (APPLE)
      set_target_properties (${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".bundle")
    endif ()
244 245
  endif ()
endmacro()
246 247 248 249

#
# Like TARGET_LINK_LIBRARIES but for swig modules
#
250 251 252
macro(SWIG_LINK_LIBRARIES name)
  if(SWIG_MODULE_${name}_REAL_NAME)
    target_link_libraries(${SWIG_MODULE_${name}_REAL_NAME} ${ARGN})
253
  else()
254
    message(SEND_ERROR "Cannot find Swig library \"${name}\".")
255 256
  endif()
endmacro()
257