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SWIG: Add support for custom Swig source file extensions

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This commit is contained in:
Thirumal Venkat
2018-12-29 22:15:26 +05:30
parent efdc19c58b
commit 9816748847
7 changed files with 111 additions and 2 deletions
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Modules/UseSWIG.cmake
+24 -2
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@@ -75,7 +75,8 @@ Defines the following command for use with ``SWIG``:
``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.
the standard way. This behavior can be overriden by specifying the variable
``SWIG_SOURCE_FILE_EXTENSIONS``.
.. note::
@@ -222,6 +223,15 @@ as well as ``SWIG``:
``SWIG_MODULE_<name>_EXTRA_DEPS``
Specify extra dependencies for the generated module for ``<name>``.
``SWIG_SOURCE_FILE_EXTENSIONS``
Specify a list of source file extensions to override the default
behavior of considering only ``.i`` files as sources for the ``SWIG``
tool. For example:
.. code-block:: cmake
set(SWIG_SOURCE_FILE_EXTENSIONS ".i" ".swg")
#]=======================================================================]
cmake_policy(GET CMP0078 target_name_policy)
@@ -659,8 +669,20 @@ function(SWIG_ADD_LIBRARY name)
set(CMAKE_SWIG_OUTDIR "${outputdir}")
set(SWIG_OUTFILE_DIR "${outfiledir}")
# See if the user has specified source extensions for swig files?
if (NOT DEFINED SWIG_SOURCE_FILE_EXTENSIONS)
# Assume the default (*.i) file extension for Swig source files
set(SWIG_SOURCE_FILE_EXTENSIONS ".i")
endif()
# Generate a regex out of file extensions.
string(REGEX REPLACE "([$^.*+?|()-])" "\\\\\\1" swig_source_ext_regex "${SWIG_SOURCE_FILE_EXTENSIONS}")
list (JOIN swig_source_ext_regex "|" swig_source_ext_regex)
string (PREPEND swig_source_ext_regex "(")
string (APPEND swig_source_ext_regex ")$")
set(swig_dot_i_sources ${_SAM_SOURCES})
list(FILTER swig_dot_i_sources INCLUDE REGEX "\\.i$")
list(FILTER swig_dot_i_sources INCLUDE REGEX ${swig_source_ext_regex})
if (NOT swig_dot_i_sources)
message(FATAL_ERROR "SWIG_ADD_LIBRARY: no SWIG interface files specified")
endif()