/usr/include/GNUstep/General is in paje.app 1.98-1+b2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/include/GNUstep/../../lib/GNUstep/Frameworks/General.framework/Headers
/usr/include/GNUstep/../../lib/GNUstep/Frameworks/General.framework/Headers