CMake/Modules/FindSWIG.cmake

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Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
2016-09-27 22:01:08 +03:00
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindSWIG
# --------
#
# Find 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. 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 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)