Hey Daniel,

Thank you for your taking the time to provide feedback.

CMake is the de-facto "build" system (it's actually a generator for buildsystems like make, ninja and so on) for C and C++ programs as far as i know. There are some alternatives, like Meson i think, that i am really not familiar with and not seen it in the wild enough.

So to answer your questions:

- CMake currently builds only the files found in the src/core folder. For the modules, we will probably have to adopt each module separately to CMake. Not something difficult, i would say but there are lots of modules. Maybe you can suggest some modules we want to get it up and running for some initial set-up and to see how to properly adjust the workflow to CMake.

- Most probably yes, i have seen CMake build docs with doxygen. I am not really familiar with our docs generator but i think as long as we use a well-know generator, we can have seperate targets for generating the Docs and probably custom files from the xml like Readme files.

- At the end of the CMake integration, there should be no need for any of the Makefiles. CMake will generate the appropriate ones for make, ninja, Visual Studio or whatever build you choose (as long as it's supported by CMake) and use that for building the targets. At this point also, no makefiles from repositort where used to build the core. When you run CMake in the build folder, it creates a new set of makefiles in there, that do the job.

I hope these clear some of your questions. If you need any more information or have any suggestions regarding modules/docs please let me know,

Xenofon

From: Daniel-Constantin Mierla <miconda@gmail.com>
Sent: Wednesday, June 12, 2024 09:21
To: Kamailio (SER) - Development Mailing List <sr-dev@lists.kamailio.org>
Cc: Xenofon Karamanos <xk@gilawa.com>
Subject: Re: [sr-dev] Initial Support for CMake in Kamailio - Feedback Needed!

Hello,

thanks for spending time in this direction! Makefiles were for long supposed to get a review.

I am not familiar for CMake, but if it is considered a good option, I am fine with it. For now, a few questions:

- is it already building the modules as well, or only the core for now?

- can it be used also for building the docs (e.g., README files for modules)?

- any of the old Makefiles need to be kept, or all of them will be replaced?

Cheers,
Daniel

On 11.06.24 18:11, Xenofon Karamanos via sr-dev wrote:

Hello all,

I've started working on integrating CMake as a build system for the Kamailio. This is an initial step towards potentially offering CMake as an alternative to the current build system across the entire Kamailio project.

Right now, the CMake configuration is quite basic and covers only the core module. It offers limited options described in Makefile.defs that are required to build the core module.

Some notes regarding the definitions can be found also in the CMakelists.notes that made the build failed and maybe it's good to remove from current Makefiles as well, if i am not wrong.

Before we consider extending it to other modules and components, i would like some feedback whether you find it useful at all.

You can find the initial CMake files in the cmake branch. Please take a look and feel free to share any feedback or suggestions. Your input will be much appreciated and nessecary if we want CMake as a build system.

For anyone wanting to try and compile using cmake, here are some basic instructions on how to get you started.

Checkout the cmake branch of kamailio repo.

Create a new folder, let's call it build.

mkdir build && cd build

Then run CMake for the configuration

cmake .. (you can also then use ccmake . for a visual of the offered options)

Build and install using make

make -j4

make install

OR

Build and install using cmake

cmake --build .

cmake --install .

You can of course use the CMake variable CMAKE_INSTALL_PREFIX to change the installation paths as follows and of course other preprocessor defintions:

cmake -DCMAKE_INSTALL_PREFIX=./kamailio-cmake -DUSE_TCP=0 ..

This will install it in the build/kamailio-cmake folder but fails to build because USE_TCP is required for kamailio to build (Check CMakelists.notes).

Thank you all for your continuous contributions and support. Looking forward to hearing your thoughts and insights.

Best regards,

Xenofon

https://github.com/kamailio/kamailio/tree/cmake

GitHub - kamailio/kamailio at cmake

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms - - GitHub - kamailio/kamailio at cmake

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