Error while compiling the compiler

[FardaleM]

I was curious to try this version of the compiler. Unfortunately, I am getting the following error when I try to compile it:

prims.h:29:23: error: too many arguments to function ‘(value (*)(void))*(caml_prim_table.contents + (sizetype)((long unsigned int)*pc * 8))’; expected 0, have 1
   29 | #define Primitive(n) ((c_primitive)(caml_prim_table.contents[n]))
      |                      ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
interp.c:893:14: note: in expansion of macro ‘Primitive’
  893 |       accu = Primitive(*pc)(accu);
      |              ^~~~~~~~~
prims.h:29:23: error: too many arguments to function ‘(value (*)(void))*(caml_prim_table.contents + (sizetype)((long unsigned int)*pc * 8))’; expected 0, have 2
   29 | #define Primitive(n) ((c_primitive)(caml_prim_table.contents[n]))
      |                      ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
interp.c:899:14: note: in expansion of macro ‘Primitive’
  899 |       accu = Primitive(*pc)(accu, sp[1]);

I must admit my knowledge in C is far too low to understand the problem here.
The version of GCC on my system is: gcc (Debian 15.2.0-4) 15.2.0