[Scons-users] Ninja generator, compilation database issues

[Mats Wichmann]

On 8/30/24 02:38, Jelic, Nikola wrote:
> Greetings,
> 
> We are using SCons' Ninja generator to upgrade the existing project. We 
> are also using the compilation database extension in SCons, but we have 
> reached some interesting limitations when we try to use Ninja generator.
> In short, if "compile_commands.json" is requested to be anywhere except 
> the root of the project (which is not our case), we face one or all of 
> these issues:
> 
>   *
>     Duplicate Ninja targets
>   *
>     A hanging task for generating the compilation database on a
>     different location
> 
> I have a small WIP patch that resolves some of these issues, but I 
> wanted to start a discussion and see what the best approach would be.

Can continue discussion here, open an issue (or discussion) on GitHub, 
or even discuss on the Discord channel.

>     The location and the name of the compilation database file should be
>     completely independent of the project structure

There shouldn't be, and I don't at a quick glance see any reason in the 
code for why putting the database somewhere else would not work.  I do 
note that the test suite only checks names in the project topdir, and in 
a variant directory (which "looks like" in the topdir although it's 
relocated).

We don't have anything that tests the compilation DB and ninja together.