Hi again,
I am still struggling with SWIG, and tested various things. Since UseSWIG.cmake
seems quite similar from 2.4 to 2.6-1, here are some throughts I had while
using it.
I don't know if my patches are relevant or not, I am probably using cmake the
wrong way, but I'll give it a try ...
Oh, and sorry for multi-posting, but I think it's better to keep different
subjects on different threads ;)
- throught
First thing is the naming convention of generated wrappers.
Wrappers (_wrap.cxx files) names are built from their interface file (.i)
basename, then concatenated with the wrapped language. ie: wrapping to python,
example.i will produce an examplePYTHON_wrap.cxx file. It's intended to wrap a
single interface to different languages, great !
BUT, this file name doesn't match swig naming convention. wrapping an "example"
module with an example.i interface should generate an example_wrap.cxx file,
-and- an example.py script (proxy class declaration).
For now, concatenating the target language to the file name results on a simple
low level library generation (C-style static calls of the form
module_name_method(self, args...)), but swig won't be able to produce the
corresponding proxy script.
Having the wrappers files named correctly results on a full generation after
/usr/bin/swig call (C-style wrapper + proxy script).
- patch
I added a custom source file property "APPENDLANGUAGE", and modified
UseSWIG.cmake this way :
******************** UseSWIG.cmake
MACRO(SWIG_ADD_SOURCE_TO_MODULE name outfiles infile)
...
GET_SOURCE_FILE_PROPERTY(swig_source_file_appendlanguage ${infile}
APPENDLANGUAGE)
...
IF(swig_source_file_appendlanguage)
SET(swig_generated_file_fullname
"${swig_generated_file_fullname}${SWIG_MODULE_${name}_LANGUAGE}_wrap")
ELSE(swig_source_file_appendlanguage)
SET(swig_generated_file_fullname
"${swig_generated_file_fullname}_wrap")
ENDIF(swig_source_file_appendlanguage)
...
So that I only have to write some lines on my CMakeLists.txt files, ie :
SET_SOURCE_FILES_PROPERTIES(example.i PROPERTIES APPENDLANGUAGE OFF)
That should be convenient for people wrapping to a single language anyway.
Tonio
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