110 lines
4.2 KiB
CMake
110 lines
4.2 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
#[=======================================================================[.rst:
|
|
FindSWIG
|
|
--------
|
|
|
|
Find the Simplified Wrapper and Interface Generator (SWIG_) executable.
|
|
|
|
|
|
This module finds an installed SWIG and determines its version. If a
|
|
``COMPONENTS`` or ``OPTIONAL_COMPONENTS`` argument is given to ``find_package``,
|
|
it will also determine supported target languages. The module sents the
|
|
following variables:
|
|
|
|
``SWIG_FOUND``
|
|
Whether SWIG and any required components were found on the system.
|
|
``SWIG_EXECUTABLE``
|
|
Path to the SWIG executable.
|
|
``SWIG_DIR``
|
|
Path to the installed SWIG ``Lib`` directory (result of ``swig -swiglib``).
|
|
``SWIG_VERSION``
|
|
SWIG executable version (result of ``swig -version``).
|
|
``SWIG_<lang>_FOUND``
|
|
If ``COMPONENTS`` or ``OPTIONAL_COMPONENTS`` are requested, each available
|
|
target language ``<lang>`` (lowercase) will be set to TRUE.
|
|
|
|
Any ``COMPONENTS`` given to ``find_package`` should be the names of supported
|
|
target languages as provided to the LANGUAGE argument of ``swig_add_library``,
|
|
such as ``python`` or ``perl5``. Language names *must* be lowercase.
|
|
|
|
All information is collected from the ``SWIG_EXECUTABLE``, so the version
|
|
to be found can be changed from the command line by means of setting
|
|
``SWIG_EXECUTABLE``.
|
|
|
|
Example usage requiring SWIG 4.0 or higher and Python language support, with
|
|
optional Fortran support:
|
|
|
|
.. code-block:: cmake
|
|
|
|
find_package(SWIG 4.0 COMPONENTS python OPTIONAL_COMPONENTS fortran)
|
|
if(SWIG_FOUND)
|
|
message("SWIG found: ${SWIG_EXECUTABLE}")
|
|
if(NOT SWIG_fortran_FOUND)
|
|
message(WARNING "SWIG Fortran bindings cannot be generated")
|
|
endif()
|
|
endif()
|
|
|
|
.. _`SWIG`: http://swig.org
|
|
|
|
#]=======================================================================]
|
|
|
|
find_program(SWIG_EXECUTABLE NAMES swig4.0 swig3.0 swig2.0 swig)
|
|
|
|
if(SWIG_EXECUTABLE)
|
|
execute_process(COMMAND ${SWIG_EXECUTABLE} -swiglib
|
|
OUTPUT_VARIABLE SWIG_swiglib_output
|
|
ERROR_VARIABLE SWIG_swiglib_error
|
|
RESULT_VARIABLE SWIG_swiglib_result)
|
|
|
|
if(SWIG_swiglib_result)
|
|
if(SWIG_FIND_REQUIRED)
|
|
message(SEND_ERROR "Command \"${SWIG_EXECUTABLE} -swiglib\" failed with output:\n${SWIG_swiglib_error}")
|
|
else()
|
|
message(STATUS "Command \"${SWIG_EXECUTABLE} -swiglib\" failed with output:\n${SWIG_swiglib_error}")
|
|
endif()
|
|
else()
|
|
string(REGEX REPLACE "[\n\r]+" ";" SWIG_swiglib_output ${SWIG_swiglib_output})
|
|
find_path(SWIG_DIR swig.swg PATHS ${SWIG_swiglib_output} NO_CMAKE_FIND_ROOT_PATH)
|
|
if(SWIG_DIR)
|
|
set(SWIG_USE_FILE ${CMAKE_CURRENT_LIST_DIR}/UseSWIG.cmake)
|
|
execute_process(COMMAND ${SWIG_EXECUTABLE} -version
|
|
OUTPUT_VARIABLE SWIG_version_output
|
|
ERROR_VARIABLE SWIG_version_output
|
|
RESULT_VARIABLE SWIG_version_result)
|
|
if(SWIG_version_result)
|
|
message(SEND_ERROR "Command \"${SWIG_EXECUTABLE} -version\" failed with output:\n${SWIG_version_output}")
|
|
else()
|
|
string(REGEX REPLACE ".*SWIG Version[^0-9.]*\([0-9.]+\).*" "\\1"
|
|
SWIG_version_output "${SWIG_version_output}")
|
|
set(SWIG_VERSION ${SWIG_version_output} CACHE STRING "Swig version" FORCE)
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
if(SWIG_FIND_COMPONENTS)
|
|
execute_process(COMMAND ${SWIG_EXECUTABLE} -help
|
|
OUTPUT_VARIABLE SWIG_swighelp_output
|
|
ERROR_VARIABLE SWIG_swighelp_error
|
|
RESULT_VARIABLE SWIG_swighelp_result)
|
|
if(SWIG_swighelp_result)
|
|
message(SEND_ERROR "Command \"${SWIG_EXECUTABLE} -help\" failed with output:\n${SWIG_swiglib_error}")
|
|
else()
|
|
string(REPLACE "\n" ";" SWIG_swighelp_output "${SWIG_swighelp_output}")
|
|
foreach(SWIG_line IN LISTS SWIG_swighelp_output)
|
|
if(SWIG_line MATCHES "-([A-Za-z0-9_]+) +- *Generate.*wrappers")
|
|
set(SWIG_${CMAKE_MATCH_1}_FOUND TRUE)
|
|
endif()
|
|
endforeach()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
|
|
find_package_handle_standard_args(
|
|
SWIG HANDLE_COMPONENTS
|
|
REQUIRED_VARS SWIG_EXECUTABLE SWIG_DIR
|
|
VERSION_VAR SWIG_VERSION)
|
|
|
|
mark_as_advanced(SWIG_DIR SWIG_VERSION SWIG_EXECUTABLE)
|