$ make
./bme/dat2inc gt2stereo.dat goatdata.c
cc `sdl-config --cflags` -Ibme -Iasm -O3 -fpermissive   -c -o goatdata.o goatdata.c
cc1: Warnung: Kommandozeilenoption »-fpermissive« ist gültig für C++/ObjC++, aber nicht für C
cc `sdl-config --cflags` -Ibme -Iasm -O3 -fpermissive   -c -o gt2stereo.o gt2stereo.c
cc1: Warnung: Kommandozeilenoption »-fpermissive« ist gültig für C++/ObjC++, aber nicht für C
In Datei, eingebunden von bme/SDL/SDL_stdinc.h:30,
                 von bme/SDL/SDL_main.h:26,
                 von bme/SDL/SDL.h:30,
                 von bme/bme.h:6,
                 von goattrk2.h:12,
                 von gt2stereo.c:26:
bme/SDL/SDL_config.h:42:10: schwerwiegender Fehler: SDL_config_minimal.h: Datei oder Verzeichnis nicht gefunden
   42 | #include "SDL_config_minimal.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~
Kompilierung beendet.

cc `sdl-config --cflags` -Ibme -Iasm -O3 -fpermissive   -c -o gt2stereo.o gt2stereo.c
In file included from gt2stereo.c:26:
In file included from ./goattrk2.h:12:
In file included from bme/bme.h:6:
In file included from bme/SDL/SDL.h:30:
In file included from bme/SDL/SDL_main.h:26:
In file included from bme/SDL/SDL_stdinc.h:30:
bme/SDL/SDL_config.h:34:10: fatal error: 'SDL_config_macosx.h' file not found
#include "SDL_config_macosx.h"
         ^~~~~~~~~~~~~~~~~~~~~
1 error generated.
make: *** [gt2stereo.o] Error 1

$ grep -i gt2stereo gt2stereo.c
				printtext(0, y++, getColor(15, 0), "Usage: GT2STEREO [songname] [options]");
	strcat(filename, "/gt2stereo.cfg");
$

$ git diff c28467b4070c131ef70cc4e7ef6dc6c9d78efb9f gt2stereo.c

char filename[MAX_PATHNAME];

$ gtultra
Unable to read directory: No such file or directory
$

if (**strp == 0xd){
    s[i] = '\n';

if (**strp == 0xa){
    s[i] = '\n';