Fix that src/config.h.in becomes a modified file by git tracking. The CMakeLists.txt file uses src/cm_config.h.in. The src/config.h.in file generated by autoheader is ignored by git.
This makes cmake build and also configure build succeed, without having a dirty git repository as the result of autoheader overwriting the src/config.h.in file.
Fix that src/config.h.in becomes a modified file by git tracking. The CMakeLists.txt file uses src/cm_config.h.in. The src/config.h.in file generated by autoheader is ignored by git.
This makes cmake build and also configure build succeed, without having a dirty git repository as the result of autoheader overwriting the src/config.h.in file.