c++ - How to change CMAKE_C_COMPILER without losing configuration? -

when change cmake_c_compiler / cmake_cxx_compiler.

cmake detects , re-generates cache, loosing manually defined options.

i can see why cmake project chose behavior, in cases makes sense,
however it's not useful when...

• using wrapper (typically shell script calls compiler).
• using prefix command such distcc or ccache.

for example. don't need distcc enabled time, , able enable it, when i'm bisecting.

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is possible change compiler command in cmake without re-generating cache?