CODEWITHSUNDEEP
cmakecross-compiling
Good Night Nerd Pride
Good Night Nerd Pride

Reputation: 8500

CMake ignores toolchain file. How do get debug/error output?

I'm currently trying to use CMake for cross-compiling. However, CMake seems to ignore the toolchain specified by

cmake -DCMAKE_TOOLCHAIN_FILE=my-toolchain.cmake .

or

cmake . -DCMAKE_TOOLCHAIN_FILE=my-toolchain.cmake

If I omit the CMAKE_TOOLCHAIN_FILE option, the exact same Makefile is generated. Furthermore, if I deliberately give a wrong filename or insert syntax and path errors in the toolchain file, CMake doesn't bother to complain either.

Is there a way to get more error/debug output during a CMake run? The only option I could find is "--debug-output", which isn't very helpful in my case.

Upvotes: 11

Views: 13280

Answers (1)

Good Night Nerd Pride
Good Night Nerd Pride

Reputation: 8500

My mistake. CMake always regenerated an existing build tree. By deleting CMakeCache.txt in the build directory, CMake is forced to generate a new build tree and does not ignore the CMAKE_TOOLCHAIN_FILE option anymore. See the CMake FAQ.

Upvotes: 19

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