Hi all! There are cmake configuration files in APR's upstream that were primarily made to address complexity of building the project on Windows platform and yet it's the only one supported.
I think it would be really cool to extend it to support all platforms/configurations. There are however a few things that make it complicated to implement; 1. Some platform specific code is put into dedicated subdirectories (like file_io/unix/copy.c). But it's not exactly true because if you look carefully you realise that the same copy.c is also used in Windows build. This is not related that much to the build system, but a general idea for the project, to put shared code away from */unix/. I suggest moving those files under those subdirs into the parents of unix/ (file_io/unix/copy.c -> file_io/copy.c), keeping only platform specific code there. Also for example the os2 version of copy.c simply includes the one for unix. So I believe this is something that would be an improvement to keeping things organised. I think it will be clearer when some ancient platforms are removed from upstream... I want to mention that, code from apr-util has this exact structure because there is a little difference between platforms. 2. apr.h is a complete mess right now; There are four templates that generate it and I believe some of them are outdated/unused. I want to try to make the Unix and Windows versions to be as similar to each other as possible. Perhaps we might rely on macros where different code is needed. A lot of stuff is still similar, especially in the modern days. The cmakefication will achieve that! 3. Some parts of cmake that we currently have are tied to Windows too much. I think there is some refactoring to be done to get it to work on Unix. 4. There are also some Unix specific features that are not fully implemented in cmake currently. I will be happy to try and extend cmake to work on Unix, if this feature is wanted of course. -- Timofei Zhakov
