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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindSWIG
--------
Find Simplified Wrapper and Interface Generator (SWIG)
This module finds an installed SWIG. It sets the following variables:
::
SWIG_FOUND - set to "True" if SWIG is found
SWIG_DIR - the directory where swig is installed
SWIG_EXECUTABLE - the path to the swig executable
SWIG_VERSION - the version number of the swig executable
The minimum required version of SWIG can be specified using the
standard syntax, e.g. :command:`find_package(SWIG 1.1)`
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``
#]=======================================================================]
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 ${SWIG_version_output} CACHE STRING "Swig version" FORCE)
endif()
endif()
endif()
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SWIG REQUIRED_VARS SWIG_EXECUTABLE SWIG_DIR
VERSION_VAR SWIG_VERSION )
mark_as_advanced(SWIG_DIR SWIG_VERSION SWIG_EXECUTABLE)