how to set ccls to search c++ standard headers automatically

[FH0]

compile_commands.json does not contains -I/usr/include/x86_64-linux-gnu/c++/11 and -I/usr/include/c++/11. This error will be emitted 'shared_mutex' file not found.

If I add -I/usr/include/x86_64-linux-gnu/c++/11 and -I/usr/include/c++/11 to compile_commands.json, there is no error.

It seems my ccls can't find c++ standard headers automatically. I don't know which settings I changed. ccls was able to work properly yesterday.

Headers and sources are no problem because I can use cmake to compile my project without an error.

System information

• ccls version (git describe --tags --long): 8bc3959537adae26b470c8223845555ea26693cc
• clang version: 16.0.6 (++20230710042046+7cbf1a259152-1~exp1~20230710162136.105)
• OS: WSL2 Ubuntu-22.04
• Editor: VSCode
• Language client (and version): VSCode ccls v0.1.29

[hikycool]

The same problem that I also met. And Ccls only include standard header file but miss project header file while setting "-I/usr/include/c++/11" in ".ccls" file.

[FH0]

Finally solved by apt purge libgcc-12-dev -y

[hikycool]

My way is "apt install gcc-12 g++-12” on Ubuntu-22.04 instead of gcc-11 before.