On 03/24/2016 11:28 AM, Sebastian Schuberth wrote: > Configuring libgit2 fails as CMake does not set CMAKE_SIZEOF_VOID_P > (nor CMAKE_C_SIZEOF_DATA_PTR), see the attached CMakeCCompiler.cmake file. > > I tried to search CMake's source code to find out how the value of > @CMAKE_C_SIZEOF_DATA_PTR@ is determined in CMakeCCompiler.cmake.in, > but I failed. Does anyone have suggestions on how to debug this further, > or what the possible root causes might be?
It is supposed to be done here: https://cmake.org/gitweb?p=cmake.git;a=blob;f=Modules/CMakeDetermineCompilerABI.cmake;hb=v3.5.0#l23 https://cmake.org/gitweb?p=cmake.git;a=blob;f=Modules/CMakeCCompilerABI.c;hb=v3.5.0 The try_compile produces a binary file that encodes strings with the information. Then we use file(STRINGS) to parse the strings right out of the binary. The INFO:sizeof_dptr[...] string contains the size of data pointer types. Check CMakeFiles/CMake{Output,Error}.log to see if anything went wrong with that step that was logged. Otherwise you can add debugging code. -Brad -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
