$ echo 'project (Test C)' > CMakeLists.txt $ cmake -DCMAKE_C_COMPILER:FILEPATH=clang . -- The C compiler identification is Clang 3.1.0 -- Check for working C compiler: /usr/bin/clang -- Check for working C compiler: /usr/bin/clang -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Configuring done -- Generating done -- Build files have been written to: /tmp/jed/foo
Cool, what happens when we re-run the same command? $ cmake -DCMAKE_C_COMPILER:FILEPATH=clang . -- Configuring done You have changed variables that require your cache to be deleted. Configure will be re-run and you may have to reset some variables. The following variables have changed: CMAKE_C_COMPILER= clang -- Configuring done You have changed variables that require your cache to be deleted. Configure will be re-run and you may have to reset some variables. The following variables have changed: CMAKE_C_COMPILER= clang *[infinite loop]* After this awful behavior, you have to manually delete the CMakeFiles directory (not CMakeCache.txt) to recover.
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