Fix missing CMake options

[Eyenseo]

If the current directory contains a 'compile_commands.json' file the loop is
left early.

[pfultz2]

Thats right, there is no need to keep searching if the compile_commands.json file is found.

[Eyenseo]

Are you sure?

Without this (with the return) the subdirectories are not searched and my project was missing almost all of my include directories

[pfultz2]

Why are your include directories not in the compile_commands.json file? Is cmake emitting an empty compile_commands.json file?

[Eyenseo]

Well this is interesting...

My project does not make use of CMAKE_EXPORT_COMPILE_COMMANDS but a 3rd-party library does - what happened was, that before introducing this library everything worked fine and "suddenly" I got no completions for my own classes.

I would say this is not so much of a fix but an improvement to support mixed projects - unless there is another disadvantage than the initial runtime cost.

[pfultz2]

Perhaps it would be better to have config that sets where the flags come from.

[Eyenseo]

That would be the best solution I guess.
There would have to be three options:

• Flags from compile_commands.json (For the 'best' match - currently the fine grained information is not used but that could change.)
• Flags from flags.make (Legacy option - probably the default?)
• Mixed (Compatibility for mixed projects like the one I have.)

[pfultz2]

I am thinking like:

• auto - like how it is now, so it will pick up flags either from flags.cmake or compile_commands.json
• json - only use flags from the compile_commands.json
• make - only use flags from flags.make and ignore any flags in compile_commands.json

[Eyenseo]

That would work too!

I had another a look at the build dir and it seems that the flags.make file gets still created even though CMAKE_EXPORT_COMPILE_COMMANDS is set.
I was under the impression that that was not the case as the third party library had no flags.make, but now I realised that it doesn't have any flags in the json file ...

👍