1 files changed, 600 insertions, 215 deletions
diff --git a/cmake/Modules/UseSWIG.cmake b/cmake/Modules/UseSWIG.cmake
index a37cc41ae4..302e8f370e 100644
--- a/cmake/Modules/UseSWIG.cmake
+++ b/cmake/Modules/UseSWIG.cmake
@@ -1,62 +1,230 @@
-# - 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.)
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+UseSWIG
+-------
+
+This file provides support for ``SWIG``. It is assumed that :module:`FindSWIG`
+module has already been loaded.
+
+Defines the following command for use with ``SWIG``:
+
+.. command:: swig_add_library
+
+  Define swig module with given name and specified language::
+
+    swig_add_library(<name>
+                     [TYPE <SHARED|MODULE|STATIC|USE_BUILD_SHARED_LIBS>]
+                     LANGUAGE <language>
+                     [NO_PROXY]
+                     [OUTPUT_DIR <directory>]
+                     [OUTFILE_DIR <directory>]
+                     SOURCES <file>...
+                    )
+
+  Targets created with the ``swig_add_library`` command have the same
+  capabilities as targets created with the :command:`add_library` command, so
+  those targets can be used with any command expecting a target (e.g.
+  :command:`target_link_libraries`).
+
+  .. note::
+
+    For multi-config generators, this module does not support
+    configuration-specific files generated by ``SWIG``. All build
+    configurations must result in the same generated source file.
+
+  ``TYPE``
+    ``SHARED``, ``MODULE`` and ``STATIC`` have the same semantic as for the
+    :command:`add_library` command. If ``USE_BUILD_SHARED_LIBS`` is specified,
+    the library type will be ``STATIC`` or ``SHARED`` based on whether the
+    current value of the :variable:`BUILD_SHARED_LIBS` variable is ``ON``. If
+    no type is specified, ``MODULE`` will be used.
+
+  ``LANGUAGE``
+    Specify the target language.
+
+  ``NO_PROXY``
+    Prevent the generation of the wrapper layer (swig ``-noproxy`` option).
+
+  ``OUTPUT_DIR``
+    Specify where to write the language specific files (swig ``-outdir``
+    option). If not given, the ``CMAKE_SWIG_OUTDIR`` variable will be used.
+    If neither is specified, the default depends on the value of the
+    ``UseSWIG_MODULE_VERSION`` variable as follows:
+
+    * If ``UseSWIG_MODULE_VERSION`` is 1 or is undefined, output is written to
+      the :variable:`CMAKE_CURRENT_BINARY_DIR` directory.
+    * If ``UseSWIG_MODULE_VERSION`` is 2, a dedicated directory will be used.
+      The path of this directory can be retrieved from the
+      ``SWIG_SUPPORT_FILES_DIRECTORY`` target property.
+
+  ``OUTFILE_DIR``
+    Specify an output directory name where the generated source file will be
+    placed (swig -o option). If not specified, the ``SWIG_OUTFILE_DIR`` variable
+    will be used. If neither is specified, ``OUTPUT_DIR`` or
+    ``CMAKE_SWIG_OUTDIR`` is used instead.
+
+  ``SOURCES``
+    List of sources for the library. Files with extension ``.i`` will be
+    identified as sources for the ``SWIG`` tool. Other files will be handled in
+    the standard way.
+
+.. note::
+
+  If ``UseSWIG_MODULE_VERSION`` is set to 2, it is **strongly** recommended
+  to use a dedicated directory unique to the target when either the
+  ``OUTPUT_DIR`` option or the ``CMAKE_SWIG_OUTDIR`` variable are specified.
+  The output directory contents are erased as part of the target build, so
+  to prevent interference between targets or losing other important files, each
+  target should have its own dedicated output directory.
+
+Source file properties on module files **must** be set before the invocation
+of the ``swig_add_library`` command to specify special behavior of SWIG and
+ensure generated files will receive the required settings.
+
+``CPLUSPLUS``
+  Call SWIG in c++ mode.  For example:
+
+  .. code-block:: cmake
+
+    set_property(SOURCE mymod.i PROPERTY CPLUSPLUS ON)
+    swig_add_library(mymod LANGUAGE python SOURCES mymod.i)
+
+``INCLUDE_DIRECTORIES``, ``COMPILE_DEFINITIONS`` and ``COMPILE_OPTIONS``
+  Add custom flags to SWIG compiler and have same semantic as properties
+  :prop_sf:`INCLUDE_DIRECTORIES`, :prop_sf:`COMPILE_DEFINITIONS` and
+  :prop_sf:`COMPILE_OPTIONS`.
+
+``GENERATED_INCLUDE_DIRECTORIES``, ``GENERATED_COMPILE_DEFINITIONS`` and ``GENERATED_COMPILE_OPTIONS``
+  Add custom flags to the C/C++ generated source. They will fill, respectively,
+  properties :prop_sf:`INCLUDE_DIRECTORIES`, :prop_sf:`COMPILE_DEFINITIONS` and
+  :prop_sf:`COMPILE_OPTIONS` of generated C/C++ file.
+
+``DEPENDS``
+  Specify additional dependencies to the source file.
+
+``SWIG_MODULE_NAME``
+  Specify the actual import name of the module in the target language.
+  This is required if it cannot be scanned automatically from source
+  or different from the module file basename.  For example:
+
+  .. code-block:: cmake
+
+    set_property(SOURCE mymod.i PROPERTY SWIG_MODULE_NAME mymod_realname)
+
+Target library properties can be set to apply same configuration to all SWIG
+input files.
+
+``SWIG_INCLUDE_DIRECTORIES``, ``SWIG_COMPILE_DEFINITIONS`` and ``SWIG_COMPILE_OPTIONS``
+  These properties will be applied to all SWIG input files and have same
+  semantic as target properties :prop_tgt:`INCLUDE_DIRECTORIES`,
+  :prop_tgt:`COMPILE_DEFINITIONS` and :prop_tgt:`COMPILE_OPTIONS`.
+
+  .. code-block:: cmake
+
+    swig_add_library(mymod LANGUAGE python SOURCES mymod.i)
+    set_property(TARGET mymod PROPERTY SWIG_COMPILE_DEFINITIONS MY_DEF1 MY_DEF2)
+    set_property(TARGET mymod PROPERTY SWIG_COMPILE_OPTIONS -bla -blb)
+
+``SWIG_GENERATED_INCLUDE_DIRECTORIES``, ``SWIG_GENERATED_COMPILE_DEFINITIONS`` and ``SWIG_GENERATED_COMPILE_OPTIONS``
+  These properties will populate, respectively, properties
+  :prop_sf:`INCLUDE_DIRECTORIES`, :prop_sf:`COMPILE_DEFINITIONS` and
+  :prop_sf:`COMPILE_FLAGS` of all generated C/C++ files.
+
+``SWIG_DEPENDS``
+  Add dependencies to all SWIG input files.
+
+The following target properties are output properties and can be used to get
+information about support files generated by ``SWIG`` interface compilation.
+
+``SWIG_SUPPORT_FILES``
+  This output property list of wrapper files generated during SWIG compilation.
+
+  .. code-block:: cmake
+
+    swig_add_library(mymod LANGUAGE python SOURCES mymod.i)
+    get_property(support_files TARGET mymod PROPERTY SWIG_SUPPORT_FILES)
+
+  .. note::
+
+    Only most principal support files are listed. In case some advanced
+    features of ``SWIG`` are used (for example ``%template``), associated
+    support files may not be listed. Prefer to use the
+    ``SWIG_SUPPORT_FILES_DIRECTORY`` property to handle support files.
+
+``SWIG_SUPPORT_FILES_DIRECTORY``
+  This output property specifies the directory where support files will be
+  generated.
+
+Some variables can be set to customize the behavior of ``swig_add_library``
+as well as ``SWIG``:
+
+``UseSWIG_MODULE_VERSION``
+  Specify different behaviors for ``UseSWIG`` module.
+
+  * Set to 1 or undefined: Legacy behavior is applied.
+  * Set to 2: A new strategy is applied regarding support files: the output
+    directory of support files is erased before ``SWIG`` interface compilation.
+
+``CMAKE_SWIG_FLAGS``
+  Add flags to all swig calls.
+
+``CMAKE_SWIG_OUTDIR``
+  Specify where to write the language specific files (swig ``-outdir`` option).
+
+``SWIG_OUTFILE_DIR``
+  Specify an output directory name where the generated source file will be
+  placed.  If not specified, ``CMAKE_SWIG_OUTDIR`` is used.
+
+``SWIG_MODULE_<name>_EXTRA_DEPS``
+  Specify extra dependencies for the generated module for ``<name>``.
+#]=======================================================================]
+
+
+cmake_policy (VERSION 3.8)
 
 set(SWIG_CXX_EXTENSION "cxx")
 set(SWIG_EXTRA_LIBRARIES "")
 
-set(SWIG_PYTHON_EXTRA_FILE_EXTENSION "py")
+set(SWIG_PYTHON_EXTRA_FILE_EXTENSIONS ".py")
+set(SWIG_JAVA_EXTRA_FILE_EXTENSIONS ".java" "JNI.java")
+
+##
+## PRIVATE functions
+##
+function (__SWIG_COMPUTE_TIMESTAMP name language infile workingdir __timestamp)
+  get_filename_component(filename "${infile}" NAME_WE)
+  set(${__timestamp}
+    "${workingdir}/${filename}${language}.stamp" PARENT_SCOPE)
+  # get_filename_component(filename "${infile}" ABSOLUTE)
+  # string(UUID uuid NAMESPACE 9735D882-D2F8-4E1D-88C9-A0A4F1F6ECA4
+  #   NAME ${name}-${language}-${filename} TYPE SHA1)
+  # set(${__timestamp} "${workingdir}/${uuid}.stamp" PARENT_SCOPE)
+endfunction()
 
 #
 # 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}")
+  string(TOUPPER "${language}" SWIG_MODULE_${name}_LANGUAGE)
+  string(TOLOWER "${language}" SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG)
+
+  set(SWIG_MODULE_${name}_EXTRA_FLAGS)
+  if (NOT DEFINED SWIG_MODULE_${name}_NOPROXY)
+    set (SWIG_MODULE_${name}_NOPROXY FALSE)
+  endif()
+  if ("-noproxy" IN_LIST CMAKE_SWIG_FLAGS)
+    set (SWIG_MODULE_${name}_NOPROXY TRUE)
+  endif ()
 
-  set(SWIG_MODULE_${name}_REAL_NAME "${name}")
-  if("${SWIG_MODULE_${name}_LANGUAGE}" STREQUAL "UNKNOWN")
+  if (SWIG_MODULE_${name}_NOPROXY AND NOT "-noproxy" IN_LIST CMAKE_SWIG_FLAGS)
+    list (APPEND SWIG_MODULE_${name}_EXTRA_FLAGS "-noproxy")
+  endif()
+  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_${name}_EXTRA_FLAGS "-shadow")
+  elseif(SWIG_MODULE_${name}_LANGUAGE STREQUAL "PERL")
+    list(APPEND SWIG_MODULE_${name}_EXTRA_FLAGS "-shadow")
   endif()
 endmacro()
 
@@ -65,220 +233,387 @@ endmacro()
 # 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)
+function(SWIG_GET_EXTRA_OUTPUT_FILES language outfiles generatedpath infile)
+  set(files)
+  get_source_file_property(module_basename
+    "${infile}" SWIG_MODULE_NAME)
+  if(NOT swig_module_basename)
+
+    # try to get module name from "%module foo" syntax
+    if ( EXISTS "${infile}" )
+      file ( STRINGS "${infile}" module_basename REGEX "[ ]*%module[ ]*[a-zA-Z0-9_]+.*" )
+    endif ()
+    if ( module_basename )
+      string ( REGEX REPLACE "[ ]*%module[ ]*([a-zA-Z0-9_]+).*" "\\1" module_basename "${module_basename}" )
+
+    else ()
+      # try to get module name from "%module (options=...) foo" syntax
+      if ( EXISTS "${infile}" )
+        file ( STRINGS "${infile}" module_basename REGEX "[ ]*%module[ ]*\\(.*\\)[ ]*[a-zA-Z0-9_]+.*" )
+      endif ()
+      if ( module_basename )
+        string ( REGEX REPLACE "[ ]*%module[ ]*\\(.*\\)[ ]*([a-zA-Z0-9_]+).*" "\\1" module_basename "${module_basename}" )
+
+      else ()
+        # fallback to file basename
+        get_filename_component(module_basename "${infile}" NAME_WE)
+      endif ()
+    endif ()
+
   endif()
-  foreach(it ${SWIG_${language}_EXTRA_FILE_EXTENSION})
-    set(${outfiles} ${${outfiles}}
-      "${generatedpath}/${SWIG_GET_EXTRA_OUTPUT_FILES_module_basename}.${it}")
+  foreach(it ${SWIG_${language}_EXTRA_FILE_EXTENSIONS})
+    set(extra_file "${generatedpath}/${module_basename}${it}")
+    list(APPEND files "${extra_file}")
   endforeach()
-endmacro()
+    # Treat extra outputs as plain files regardless of language.
+  set_source_files_properties(${files} PROPERTIES LANGUAGE "")
+
+  set (${outfiles} ${files} PARENT_SCOPE)
+endfunction()
 
 #
 # 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)
+function(SWIG_ADD_SOURCE_TO_MODULE name outfiles 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 "")
-  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
-      "${swig_source_file_path}")
+  get_source_file_property(swig_source_file_cplusplus "${infile}" CPLUSPLUS)
+
+  # If CMAKE_SWIG_OUTDIR was specified then pass it to -outdir
+  if(CMAKE_SWIG_OUTDIR)
+    set(outdir ${CMAKE_SWIG_OUTDIR})
   else()
-    if(${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()
+    set(outdir ${CMAKE_CURRENT_BINARY_DIR})
   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}")
+  if(SWIG_OUTFILE_DIR)
+    set(outfiledir ${SWIG_OUTFILE_DIR})
+  else()
+    set(outfiledir ${outdir})
   endif()
-  # If CMAKE_SWIG_OUTDIR was specified then pass it to -outdir
-  if(CMAKE_SWIG_OUTDIR)
-    set(swig_outdir ${CMAKE_SWIG_OUTDIR})
+
+  if(SWIG_WORKING_DIR)
+    set (workingdir "${SWIG_WORKING_DIR}")
   else()
-    set(swig_outdir ${CMAKE_CURRENT_BINARY_DIR})
+    set(workingdir "${outdir}")
+  endif()
+
+  set (swig_source_file_flags ${CMAKE_SWIG_FLAGS})
+  # handle various swig compile flags properties
+  get_source_file_property (include_directories "${infile}" INCLUDE_DIRECTORIES)
+  if (include_directories)
+    list (APPEND swig_source_file_flags "$<$<BOOL:${include_directories}>:-I$<JOIN:${include_directories},$<SEMICOLON>-I>>")
+  endif()
+  set (property "$<TARGET_PROPERTY:${name},SWIG_INCLUDE_DIRECTORIES>")
+  list (APPEND swig_source_file_flags "$<$<BOOL:${property}>:-I$<JOIN:${property},$<SEMICOLON>-I>>")
+
+  set (property "$<TARGET_PROPERTY:${name},INCLUDE_DIRECTORIES>")
+  list (APPEND swig_source_file_flags "$<$<BOOL:${property}>:-I$<JOIN:${property},$<SEMICOLON>-I>>")
+
+  set (property "$<TARGET_PROPERTY:${name},INCLUDE_DIRECTORIES>")
+	get_source_file_property(use_target_include_dirs "${infile}" USE_TARGET_INCLUDE_DIRECTORIES)
+	if (use_target_include_dirs)
+	list (APPEND swig_source_file_flags "$<$<BOOL:${property}>:-I$<JOIN:${property},$<SEMICOLON>-I>>")
+  elseif(use_target_include_dirs STREQUAL "NOTFOUND")
+	# not defined at source level, rely on target level
+	list (APPEND swig_source_file_flags "$<$<AND:$<BOOL:$<TARGET_PROPERTY:${name},SWIG_USE_TARGET_INCLUDE_DIRECTORIES>>,$<BOOL:${property}>>:-I$<JOIN:${property},$<SEMICOLON>-I>>")
+  endif()
+
+  set (property "$<TARGET_PROPERTY:${name},SWIG_COMPILE_DEFINITIONS>")
+  list (APPEND swig_source_file_flags "$<$<BOOL:${property}>:-D$<JOIN:${property},$<SEMICOLON>-D>>")
+  get_source_file_property (compile_definitions "${infile}" COMPILE_DEFINITIONS)
+  if (compile_definitions)
+    list (APPEND swig_source_file_flags "$<$<BOOL:${compile_definitions}>:-D$<JOIN:${compile_definitions},$<SEMICOLON>-D>>")
+  endif()
+
+  list (APPEND swig_source_file_flags "$<TARGET_PROPERTY:${name},SWIG_COMPILE_OPTIONS>")
+  get_source_file_property (compile_options "${infile}" COMPILE_OPTIONS)
+  if (compile_options)
+    list (APPEND swig_source_file_flags ${compile_options})
+  endif()
+
+  # legacy support
+  get_source_file_property (swig_flags "${infile}" SWIG_FLAGS)
+  if (swig_flags)
+    list (APPEND swig_source_file_flags ${swig_flags})
+  endif()
+
+  get_filename_component(swig_source_file_fullname "${infile}" ABSOLUTE)
+
+  if (NOT SWIG_MODULE_${name}_NOPROXY)
+    SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
+      swig_extra_generated_files
+      "${outdir}"
+      "${swig_source_file_fullname}")
   endif()
-  SWIG_GET_EXTRA_OUTPUT_FILES(${SWIG_MODULE_${name}_LANGUAGE}
-    swig_extra_generated_files
-    "${swig_outdir}"
-    "${infile}")
   set(swig_generated_file_fullname
-    "${swig_generated_file_fullname}/${swig_source_file_name_we}")
+    "${outfiledir}/${swig_source_file_name_we}")
   # add the language into the name of the file (i.e. TCL_wrap)
   # this allows for the same .i file to be wrapped into different languages
-  set(swig_generated_file_fullname
-    "${swig_generated_file_fullname}${SWIG_MODULE_${name}_LANGUAGE}_wrap")
+  string(APPEND 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}")
+    string(APPEND 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()
+    string(APPEND swig_generated_file_fullname
+      ".c")
+  endif()
+
+  get_directory_property (cmake_include_directories INCLUDE_DIRECTORIES)
+  list (REMOVE_DUPLICATES cmake_include_directories)
+  set (swig_include_dirs)
+  if (cmake_include_directories)
+    set (swig_include_dirs "$<$<BOOL:${cmake_include_directories}>:-I$<JOIN:${cmake_include_directories},$<SEMICOLON>-I>>")
+  endif()
 
   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})
+    list (APPEND swig_special_flags "-c++")
   endif()
 
-  # hack to work around CMake bug in add_custom_command with multiple OUTPUT files
+  set (swig_extra_flags)
+  if(SWIG_MODULE_${name}_LANGUAGE STREQUAL "CSHARP")
+    if(NOT ("-dllimport" IN_LIST swig_source_file_flags OR "-dllimport" IN_LIST SWIG_MODULE_${name}_EXTRA_FLAGS))
+      # This makes sure that the name used in the generated DllImport
+      # matches the library name created by CMake
+      list (APPEND SWIG_MODULE_${name}_EXTRA_FLAGS "-dllimport" "${name}")
+    endif()
+  endif()
+  list (APPEND swig_extra_flags ${SWIG_MODULE_${name}_EXTRA_FLAGS})
 
-  file(RELATIVE_PATH reldir ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR})
-  execute_process(
-    COMMAND ${PYTHON_EXECUTABLE} -c "import re, hashlib
-unique = hashlib.md5(b'${reldir}${ARGN}').hexdigest()[:5]
-print(re.sub('\\W', '_', '${name} ${reldir} ' + unique))"
-    OUTPUT_VARIABLE _target OUTPUT_STRIP_TRAILING_WHITESPACE
-  )
+  # dependencies
+  set (swig_dependencies ${SWIG_MODULE_${name}_EXTRA_DEPS} $<TARGET_PROPERTY:${name},SWIG_DEPENDS>)
+  get_source_file_property(file_depends "${infile}" DEPENDS)
+  if (file_depends)
+    list (APPEND swig_dependencies ${file_depends})
+  endif()
 
-  file(
-    WRITE ${CMAKE_CURRENT_BINARY_DIR}/${_target}.cpp.in
-   "int main(void){return 0;}\n"
-  )
+  if (UseSWIG_MODULE_VERSION VERSION_GREATER 1)
+    # as part of custom command, start by removing old generated files
+    # to ensure obsolete files do not stay
+    set (swig_cleanup_command COMMAND "${CMAKE_COMMAND}" -E remove_directory "${outdir}")
+  else()
+    unset (swig_cleanup_command)
+  endif()
 
-  # 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
+  # IMPLICIT_DEPENDS below can not handle situations where a dependent file is
+  # removed. We need an extra step with timestamp and custom target, see #16830
+  # As this is needed only for Makefile generator do it conditionally
+  if(CMAKE_GENERATOR MATCHES "Make")
+    __swig_compute_timestamp(${name} ${SWIG_MODULE_${name}_LANGUAGE}
+      "${infile}" "${workingdir}" swig_generated_timestamp)
+    set(swig_custom_output "${swig_generated_timestamp}")
+    set(swig_custom_products
+      BYPRODUCTS "${swig_generated_file_fullname}" ${swig_extra_generated_files})
+    set(swig_timestamp_command
+      COMMAND ${CMAKE_COMMAND} -E touch "${swig_generated_timestamp}")
+  else()
+    set(swig_custom_output
+      "${swig_generated_file_fullname}" ${swig_extra_generated_files})
+    set(swig_custom_products)
+    set(swig_timestamp_command)
+  endif()
   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}
+    OUTPUT ${swig_custom_output}
+    ${swig_custom_products}
+    ${swig_cleanup_command}
+    # Let's create the ${outdir} at execution time, in case dir contains $(OutDir)
+    COMMAND "${CMAKE_COMMAND}" -E make_directory ${outdir} ${outfiledir}
+    ${swig_timestamp_command}
+    COMMAND "${CMAKE_COMMAND}" -E env "SWIG_LIB=${SWIG_DIR}" "${SWIG_EXECUTABLE}"
+    "-${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}"
+    "${swig_source_file_flags}"
+    -outdir "${outdir}"
     ${swig_special_flags}
     ${swig_extra_flags}
-    ${swig_include_dirs}
+    "${swig_include_dirs}"
     -o "${swig_generated_file_fullname}"
     "${swig_source_file_fullname}"
+    MAIN_DEPENDENCY "${swig_source_file_fullname}"
+    DEPENDS ${swig_dependencies}
+    IMPLICIT_DEPENDS CXX "${swig_source_file_fullname}"
     COMMENT "Swig source"
-  )
+    COMMAND_EXPAND_LISTS)
+  set_source_files_properties("${swig_generated_file_fullname}" ${swig_extra_generated_files}
+    PROPERTIES GENERATED 1)
 
-  #add dummy independent dependencies from the _target to each file
-  #that will be generated by the SWIG command above
+  ## add all properties for generated file to various properties
+  get_property (include_directories SOURCE "${infile}" PROPERTY GENERATED_INCLUDE_DIRECTORIES)
+  set_property (SOURCE "${swig_generated_file_fullname}" PROPERTY INCLUDE_DIRECTORIES ${include_directories} $<TARGET_PROPERTY:${name},SWIG_GENERATED_INCLUDE_DIRECTORIES>)
 
-  set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files})
+  # get_property (compile_definitions SOURCE "${infile}" PROPERTY GENERATED_COMPILE_DEFINITIONS)
+  # set_property (SOURCE "${swig_generated_file_fullname}" PROPERTY COMPILE_DEFINITIONS $<TARGET_PROPERTY:${name},SWIG_GENERATED_COMPILE_DEFINITIONS> ${compile_definitions})
 
-  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 ${swig_gen_file}"
-    )
-  endforeach()
+  # get_property (compile_options SOURCE "${infile}" PROPERTY GENERATED_COMPILE_OPTIONS)
+  # set_property (SOURCE "${swig_generated_file_fullname}" PROPERTY COMPILE_OPTIONS $<TARGET_PROPERTY:${name},SWIG_GENERATED_COMPILE_OPTIONS> ${compile_options})
 
-  set_source_files_properties(
-    ${outfiles} PROPERTIES GENERATED 1
-  )
+  set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files} PARENT_SCOPE)
 
-endmacro()
+  # legacy support
+  set (swig_generated_file_fullname "${swig_generated_file_fullname}" PARENT_SCOPE)
+endfunction()
 
 #
 # 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}")
+  message(DEPRECATION "SWIG_ADD_MODULE is deprecated. Use SWIG_ADD_LIBRARY instead.")
+  swig_add_library(${name}
+                   LANGUAGE ${language}
+                   TYPE MODULE
+                   SOURCES ${ARGN})
+endmacro()
+
+
+function(SWIG_ADD_LIBRARY name)
+  set(options NO_PROXY)
+  set(oneValueArgs LANGUAGE
+                   TYPE
+                   OUTPUT_DIR
+                   OUTFILE_DIR)
+  set(multiValueArgs SOURCES)
+  cmake_parse_arguments(_SAM "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+  if (TARGET ${name})
+    # a target with same name is already defined.
+    # call NOW add_library command to raise the most useful error message
+    add_library(${name})
+    return()
+  endif()
+
+  if (_SAM_UNPARSED_ARGUMENTS)
+    message(FATAL_ERROR "SWIG_ADD_LIBRARY: ${_SAM_UNPARSED_ARGUMENTS}: unexpected arguments")
+  endif()
+
+  if(NOT DEFINED _SAM_LANGUAGE)
+    message(FATAL_ERROR "SWIG_ADD_LIBRARY: Missing LANGUAGE argument")
+  endif()
+
+  if(NOT DEFINED _SAM_SOURCES)
+    message(FATAL_ERROR "SWIG_ADD_LIBRARY: Missing SOURCES argument")
+  endif()
+
+  if(NOT DEFINED _SAM_TYPE)
+    set(_SAM_TYPE MODULE)
+  elseif(_SAM_TYPE STREQUAL "USE_BUILD_SHARED_LIBS")
+    unset(_SAM_TYPE)
+  endif()
+
+  if (NOT DEFINED UseSWIG_MODULE_VERSION)
+    set (UseSWIG_MODULE_VERSION 1)
+  elseif (NOT UseSWIG_MODULE_VERSION MATCHES "^(1|2)$")
+    message (FATAL_ERROR "UseSWIG_MODULE_VERSION: ${UseSWIG_MODULE_VERSION}: invalid value. 1 or 2 is expected.")
+  endif()
+
+  set (workingdir "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/${name}.dir")
+  # set special variable to pass extra information to command SWIG_ADD_SOURCE_TO_MODULE
+  # which cannot be changed due to legacy compatibility
+  set (SWIG_WORKING_DIR "${workingdir}")
+
+  set (outputdir "${_SAM_OUTPUT_DIR}")
+  if (NOT _SAM_OUTPUT_DIR)
+    if (CMAKE_SWIG_OUTDIR)
+      set (outputdir "${CMAKE_SWIG_OUTDIR}")
     else()
-      set(swig_other_sources ${swig_other_sources} "${it}")
+      if (UseSWIG_MODULE_VERSION VERSION_GREATER 1)
+        set (outputdir "${workingdir}/${_SAM_LANGUAGE}.files")
+      else()
+        set (outputdir "${CMAKE_CURRENT_BINARY_DIR}")
+      endif()
     endif()
-  endforeach()
+  endif()
+
+  set (outfiledir "${_SAM_OUTFILE_DIR}")
+  if(NOT _SAM_OUTFILE_DIR)
+    if (SWIG_OUTFILE_DIR)
+      set (outfiledir "${SWIG_OUTFILE_DIR}")
+    else()
+      if (_SAM_OUTPUT_DIR OR CMAKE_SWIG_OUTDIR)
+        set (outfiledir "${outputdir}")
+    else()
+        set (outfiledir "${workingdir}")
+      endif()
+    endif()
+  endif()
+  # set again, locally, predefined variables to ensure compatibility
+  # with command SWIG_ADD_SOURCE_TO_MODULE
+  set(CMAKE_SWIG_OUTDIR "${outputdir}")
+  set(SWIG_OUTFILE_DIR "${outfiledir}")
+
+  set (SWIG_MODULE_${name}_NOPROXY ${_SAM_NO_PROXY})
+  swig_module_initialize(${name} ${_SAM_LANGUAGE})
+
+  set(swig_dot_i_sources ${_SAM_SOURCES})
+  list(FILTER swig_dot_i_sources INCLUDE REGEX "\\.i$")
+  if (NOT swig_dot_i_sources)
+    message(FATAL_ERROR "SWIG_ADD_LIBRARY: no SWIG interface files specified")
+  endif()
+  set(swig_other_sources ${_SAM_SOURCES})
+  list(REMOVE_ITEM swig_other_sources ${swig_dot_i_sources})
 
   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}")
+  set(swig_generated_timestamps)
+  foreach(swig_it IN LISTS swig_dot_i_sources)
+    SWIG_ADD_SOURCE_TO_MODULE(${name} swig_generated_source "${swig_it}")
+    list (APPEND swig_generated_sources "${swig_generated_source}")
+    if(CMAKE_GENERATOR MATCHES "Make")
+      __swig_compute_timestamp(${name} ${SWIG_MODULE_${name}_LANGUAGE} "${swig_it}"
+        "${workingdir}" swig_timestamp)
+      list (APPEND swig_generated_timestamps "${swig_timestamp}")
+    endif()
   endforeach()
-  get_directory_property(swig_extra_clean_files ADDITIONAL_MAKE_CLEAN_FILES)
-  set_directory_properties(PROPERTIES
-    ADDITIONAL_MAKE_CLEAN_FILES "${swig_extra_clean_files};${swig_generated_sources}")
-  add_library(${SWIG_MODULE_${name}_REAL_NAME}
-    MODULE
+  set_property (DIRECTORY APPEND PROPERTY
+    ADDITIONAL_MAKE_CLEAN_FILES ${swig_generated_sources} ${swig_generated_timestamps})
+  if (UseSWIG_MODULE_VERSION VERSION_GREATER 1)
+    set_property (DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES "${outputdir}")
+  endif()
+
+  add_library(${name}
+    ${_SAM_TYPE}
     ${swig_generated_sources}
     ${swig_other_sources})
-  string(TOLOWER "${language}" swig_lowercase_language)
-  if ("${swig_lowercase_language}" STREQUAL "java")
+  if(CMAKE_GENERATOR MATCHES "Make")
+    # see IMPLICIT_DEPENDS above
+    add_custom_target(${name}_swig_compilation DEPENDS ${swig_generated_timestamps})
+    add_dependencies(${name} ${name}_swig_compilation)
+  endif()
+  if(_SAM_TYPE STREQUAL "MODULE")
+    set_target_properties(${name} PROPERTIES NO_SONAME ON)
+  endif()
+  string(TOLOWER "${_SAM_LANGUAGE}" swig_lowercase_language)
+  if (swig_lowercase_language STREQUAL "octave")
+    set_target_properties(${name} PROPERTIES PREFIX "")
+    set_target_properties(${name} PROPERTIES SUFFIX ".oct")
+  elseif (swig_lowercase_language STREQUAL "go")
+    set_target_properties(${name} PROPERTIES PREFIX "")
+  elseif (swig_lowercase_language STREQUAL "java")
+    # 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
     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_${name}_REAL_NAME} PROPERTIES PREFIX "")
+      set_target_properties (${name} PROPERTIES SUFFIX ".jnilib")
+    endif()
+    if ((WIN32 AND MINGW) OR CYGWIN OR CMAKE_SYSTEM_NAME STREQUAL MSYS)
+      set_target_properties(${name} PROPERTIES PREFIX "")
+    endif()
+  elseif (swig_lowercase_language STREQUAL "lua")
+    if(_SAM_TYPE STREQUAL "MODULE")
+      set_target_properties(${name} PROPERTIES PREFIX "")
+    endif()
+  elseif (swig_lowercase_language STREQUAL "python")
+    if (SWIG_MODULE_${name}_NOPROXY)
+      set_target_properties(${name} PROPERTIES PREFIX "")
+    else()
+      # 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
+      set_target_properties(${name} PROPERTIES PREFIX "_")
+    endif()
     # Python extension modules on Windows must have the extension ".pyd"
     # instead of ".dll" as of Python 2.5.  Older python versions do support
     # this suffix.
@@ -288,18 +623,68 @@ macro(SWIG_ADD_MODULE name language)
     # .pyd is now the only filename extension that will be searched for.
     # </quote>
     if(WIN32 AND NOT CYGWIN)
-      set_target_properties(${SWIG_MODULE_${name}_REAL_NAME} PROPERTIES SUFFIX ".pyd")
+      set_target_properties(${name} PROPERTIES SUFFIX ".pyd")
     endif()
+  elseif (swig_lowercase_language STREQUAL "r")
+    set_target_properties(${name} PROPERTIES PREFIX "")
+  elseif (swig_lowercase_language STREQUAL "ruby")
+    # In ruby you want:
+    #      require 'LIBRARY'
+    # then ruby will look for a library whose name is platform dependent, namely
+    #   MacOS  : LIBRARY.bundle
+    #   Windows: LIBRARY.dll
+    #   Linux  : LIBRARY.so
+    set_target_properties (${name} PROPERTIES PREFIX "")
+    if (APPLE)
+      set_target_properties (${name} PROPERTIES SUFFIX ".bundle")
+    endif ()
+  elseif (swig_lowercase_language STREQUAL "perl")
+    # assume empty prefix because we expect the module to be dynamically loaded
+    set_target_properties (${name} PROPERTIES PREFIX "")
+    if (APPLE)
+      set_target_properties (${name} PROPERTIES SUFFIX ".dylib")
+    endif ()
+  else()
+    # assume empty prefix because we expect the module to be dynamically loaded
+    set_target_properties (${name} PROPERTIES PREFIX "")
   endif ()
-endmacro()
+
+  # target property SWIG_SUPPORT_FILES_DIRECTORY specify output directory of support files
+  set_property (TARGET ${name} PROPERTY SWIG_SUPPORT_FILES_DIRECTORY "${outputdir}")
+  # target property SWIG_SUPPORT_FILES lists principal proxy support files
+  if (NOT SWIG_MODULE_${name}_NOPROXY)
+    string(TOUPPER "${_SAM_LANGUAGE}" swig_uppercase_language)
+    set(swig_all_support_files)
+    foreach (swig_it IN LISTS SWIG_${swig_uppercase_language}_EXTRA_FILE_EXTENSIONS)
+      set (swig_support_files ${swig_generated_sources})
+      list (FILTER swig_support_files INCLUDE REGEX ".*${swig_it}$")
+      list(APPEND swig_all_support_files ${swig_support_files})
+    endforeach()
+    if (swig_all_support_files)
+      list(REMOVE_DUPLICATES swig_all_support_files)
+    endif()
+    set_property (TARGET ${name} PROPERTY SWIG_SUPPORT_FILES ${swig_all_support_files})
+  endif()
+
+  # to ensure legacy behavior, export some variables
+  set (SWIG_MODULE_${name}_LANGUAGE "${SWIG_MODULE_${name}_LANGUAGE}" PARENT_SCOPE)
+  set (SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG "${SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG}" PARENT_SCOPE)
+  set (SWIG_MODULE_${name}_REAL_NAME "${name}" PARENT_SCOPE)
+  set (SWIG_MODULE_${name}_NOPROXY "${SWIG_MODULE_${name}_NOPROXY}" PARENT_SCOPE)
+  set (SWIG_MODULE_${name}_EXTRA_FLAGS "${SWIG_MODULE_${name}_EXTRA_FLAGS}" PARENT_SCOPE)
+  # the last one is a bit crazy but it is documented, so...
+  # NOTA: works as expected if only ONE input file is specified
+  set (swig_generated_file_fullname "${swig_generated_file_fullname}" PARENT_SCOPE)
+endfunction()
 
 #
 # Like TARGET_LINK_LIBRARIES but for swig modules
 #
-macro(SWIG_LINK_LIBRARIES name)
+function(SWIG_LINK_LIBRARIES name)
+  message(DEPRECATION "SWIG_LINK_LIBRARIES is deprecated. Use TARGET_LINK_LIBRARIES instead.")
   if(SWIG_MODULE_${name}_REAL_NAME)
-    target_link_libraries(${SWIG_MODULE_${name}_REAL_NAME} ${ARGN})
+    target_link_libraries(${name} ${ARGN})
   else()
     message(SEND_ERROR "Cannot find Swig library \"${name}\".")
   endif()
-endmacro()
+endfunction()