Disabling -Wno-error=unused-variable for main component

[aldami]

I have enabled -Werror for my main component, but during build something enables -Wno-error=unused-variable (seen on compile_commands.json) which causes unused var warnings to not be considered as errors.

As far as I can see, that is set in esp-idf\make\project.mk:390 (v4.4):

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1. # Warnings-related flags relevant both for C and C++
2. COMMON_WARNING_FLAGS = -Wall -Werror=all \
3.     -Wno-error=unused-function \
4.     -Wno-error=unused-but-set-variable \
5.     -Wno-error=unused-variable \
6.     -Wno-error=deprecated-declarations \
7.     -Wextra \
8.     -Wno-unused-parameter -Wno-sign-compare

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How can I override these without modifying esp-idf?

I have tried:
in project\main\CMakeLists.txt:

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1. target_compile_options(${COMPONENT_LIB} PRIVATE -Wall -Wextra -Werror -Wunused-variable)

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1. add_compile_options(-Wunused-variable)

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1. set_source_files_properties(main.c
2.     PROPERTIES COMPILE_FLAGS
3.     -Wunused-variable
4. )

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Both individually, and in combinations.

Thank you

[MicroController]

You can try idf_build_set_property(COMPILE_OPTIONS ...), or, if all else fails, use gcc's diagnostic pragmas in your code.