Why is cflags appended to link flags?

Usage
1

I set set(CMAKE_SYSTEM_NAME Generic), then set CMAKE_C_FLAGS and CMAKE_EXE_LINKER_FLAGS,
I found that in addition to using the CMAKE_EXE_LINKER_FLAGS I set, the parameter CMAKE_C_FLAGS was also appended automatically when linking.
Is there any way to remove the CMAKE_C_FLAGS parameter from the link flags?

2

No. Some “compiler” flags have effects on the linker too (e.g., -pthread or -fsanitize=), so they are passed to both rules.

Why do you want to remove the flags?

3

I don’t think you’re getting it right. Things like -pthread only work at link time, it doesn’t work at compile time.

4

You’re thinking of -lpthread. -pthread also affects the compilation. Namely, it sets the _REENTRANT and __USE_REENTRANT symbols (which probably affect the standard libraries in various ways).