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FindSWIG: Add version range support

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This commit is contained in:
Marc Chevrier
2020-09-30 19:18:34 +02:00
parent 47b569a858
commit 1d300ee2a9
4 changed files with 70 additions and 6 deletions
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4
Help/release/dev/FindSWIG-version-range.rst Normal file
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@@ -0,0 +1,4 @@
FindSWIG-version-range
----------------------
* :module:`FindSWIG` module gains the capability to manage a version range.

41
Modules/FindSWIG.cmake
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@@ -7,11 +7,16 @@ 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:
``COMPONENTS`` or ``OPTIONAL_COMPONENTS`` argument is given to the
:command:`find_package` command, it will also determine supported target
languages.
When a version is requested, it can be specified as a simple value or as a
range. For a detailed description of version range usage and capabilities,
refer to the :command:`find_package` command.
The module defines the following variables:
``SWIG_FOUND``
Whether SWIG and any required components were found on the system.
@@ -50,7 +55,30 @@ optional Fortran support:
#]=======================================================================]
find_program(SWIG_EXECUTABLE NAMES swig4.0 swig3.0 swig2.0 swig)
# compute list of possible names
if (SWIG_FIND_VERSION_RANGE)
set (_SWIG_NAMES)
foreach (_SWIG_MAJOR IN ITEMS 4 3 2)
if (_SWIG_MAJOR VERSION_GREATER_EQUAL SWIG_FIND_VERSION_MIN_MAJOR
AND ((SWIG_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE" AND _SWIG_MAJOR VERSION_LESS_EQUAL SWIG_FIND_VERSION_MAX)
OR (SWIG_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE" AND _SWIG_MAJOR VERSION_LESS SWIG_FIND_VERSION_MAX)))
list (APPEND _SWIG_NAMES swig${_SWIG_MAJOR}.0)
endif()
endforeach()
elseif(SWIG_FIND_VERSION)
if (SWIG_FIND_VERSION_EXACT)
set(_SWIG_NAMES swig${SWIG_FIND_VERSION_MAJOR}.0)
else()
foreach (_SWIG_MAJOR IN ITEMS 4 3 2)
if (_SWIG_MAJOR VERSION_GREATER_EQUAL SWIG_FIND_VERSION_MAJOR)
list (APPEND _SWIG_NAMES swig${_SWIG_MAJOR}.0)
endif()
endif()
else()
set (_SWIG_NAMES swig4.0 swig3.0 swig2.0)
endif()
find_program(SWIG_EXECUTABLE NAMES ${_SWIG_NAMES} swig)
if(SWIG_EXECUTABLE)
execute_process(COMMAND ${SWIG_EXECUTABLE} -swiglib
@@ -105,6 +133,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(
SWIG HANDLE_COMPONENTS
REQUIRED_VARS SWIG_EXECUTABLE SWIG_DIR
VERSION_VAR SWIG_VERSION)
VERSION_VAR SWIG_VERSION
HANDLE_VERSION_RANGE)
mark_as_advanced(SWIG_DIR SWIG_VERSION SWIG_EXECUTABLE)

1
Tests/RunCMake/FindSWIG/RunCMakeTest.cmake
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@@ -2,3 +2,4 @@ include(RunCMake)
run_cmake(components)
run_cmake(missing-components)
run_cmake(version-range)

30
Tests/RunCMake/FindSWIG/version-range.cmake Normal file
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@@ -0,0 +1,30 @@
cmake_minimum_required (VERSION 3.18...3.19)
find_package (SWIG)
if (NOT SWIG_FOUND)
message (FATAL_ERROR "Failed to find SWIG")
endif()
# clean-up SWIG variables
unset (SWIG_EXECUTABLE CACHE)
unset (SWIG_DIR CACHE)
## Specify a range including current SWIG version
string (REGEX MATCH "^([0-9]+)" upper_version "${SWIG_VERSION}")
math (EXPR upper_version "${upper_version} + 1")
find_package (SWIG 1.0...${upper_version}.0)
if (NOT SWIG_FOUND)
message (FATAL_ERROR "Failed to find SWIG with version range 1.0...${upper_version}.0")
endif()
# clean-up SWIG variables
unset (SWIG_EXECUTABLE CACHE)
unset (SWIG_DIR CACHE)
## Specify a range excluding current SWIG version
set (range 1.0...<${SWIG_VERSION})
find_package (SWIG ${range})
if (SWIG_FOUND)
message (FATAL_ERROR "Unexpectedly find SWIG with version range ${range}")
endif()