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[SOLVED] Question about building the Python interface and Codegeneration - Printable Version

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[SOLVED] Question about building the Python interface and Codegeneration - DeltaMikeCharlie - 2023-03-24

I've been working on a bug fix for the 'xbmc.getLanguage()' Python function that I have previously described here:  372626 (thread)

I was having problems getting my Python script to recognise a new ENUM that I had created and my research lead me to this: Codegeneration (wiki) solution.

And specifically, this:
Code:
In order to run the codegenerator on any changes you made to the native api in interfaces/legacy you need to run 'make' from xbmc/interfaces/python.
Unfortunately, when I change into the specified directory and run 'make", I receive the following error.

Code:
make: *** No targets specified and no makefile found.  Stop.
I suspect, based on the high quality of the other build tools, that I am overlooking something really very simple.

If I create a new build environment from scratch, I am able to recompile everything and the new ENUM works fine, it just takes a long time to recompile.

One of the steps in creating the new build environment must also rebuild the required files (./build/swig/AddonModuleXbmc.i.cpp, etc), however, I am unable to find the command to achieve this.

Any advice will be gratefully received.

I'm using an Ubuntu build environment.

RE: Question about building the Python interface and Codegeneration - DeltaMikeCharlie - 2023-04-06

If anyone else encountered this issue, here is the solution that I use.  I'm not sure if this is the 'best' solution, but this is what I've discovered:

For reference, my normal build time, from scratch, is about 32 minutes.

When I have made changes to one of the Python module files that would normally be ignored by a 'normal' rebuild, I do the following:
 
  • In my 'kodi-build' directory, I delete the 'build' sub-directory with 'rm -r build/'.
  • I then rerun 'cmake ../kodi -DCMAKE_INSTALL_PREFIX=/usr/local -DCORE_PLATFORM_NAME=x11 -DAPP_RENDER_SYSTEM=gl' to rebuild my 'kodi-build' directory.
  • This seems to rebuild the Codegeneration stuff but leave a lot of existing object files intact.
  • I then recompile with 'cmake --build . -- VERBOSE=1 -j$(getconf _NPROCESSORS_ONLN)'.

The build time after doing this is just under 5 minutes and the changes to the Python module are now present and working in the executable produced.