target_disable_clang_tidy(fmt) does not really help about project_options HOT 5 OPEN

see ClausKlein/ModernCmakeStarter@e57657f

from project_options.

Clang tidy returns the warnings from those headers if your config file includes all headers.

from project_options.

Yes, the only way I know to prevent this is to patch the CMake generated compile_commands.json file:

Claus-iMac:ModernCmakeStarter clausklein$ make -n check
perl -i.bak -p -e 's#-W[-\w]+(=\d)?\b##g;' -e 's#-I(/Users/clausklein/.cache/CPM)#-isystem $1#g;' ./build-ModernCmakeStarter-Debug/compile_commands.json
run-clang-tidy -p ./build-ModernCmakeStarter-Debug /Users/clausklein/Workspace/cpp/ModernCmakeStarter
Claus-iMac:ModernCmakeStarter clausklein$ 

from project_options.

What does this change?

from project_options.

What does this change?

I use CMP.cmake to fetch my dependencies. With perl script, I replace all -I include path to CMP cache to -isystem include path. And I delete all -W options because some gcc warnings are not valid vor clang.

When you use vpkg or conan the imported CMake config packages use implizit this -isystem include path.

Background info: I use the CPM_SOURCE_CACHE environment variable in my makefile!

perl -i.bak -p -e 's#-W[-\w]+(=\d)?\b##g;' -e 's#-I(${CPM_SOURCE_CACHE})#-isystem $$1#g;' $(BUILD_DIR)/compile_commands.json

from project_options.