Objective C and Objective C++

[Curculigo]

gcc -v confirms that obj-c and obj-c++ are in the list of enabled languages.

The Objective C compiler (cc1obj.exe) and Objective C++ compiler (cc1objplus.exe) are available.

But it seems the Objective C runtime is not included:

fatal error: objc/Object.h: No such file or directory
    1 | #import <objc/Object.h>
      |         ^~~~~~~~~~~~~~~