Pro-Wizard is built as C++ on Windows, so its host callback
declarations should use normal C++ linkage.
Drop the C-linkage guard around those callback declarations. Unix
builds should match Windows by compiling Pro-Wizard as C++ instead of
changing callback linkage.
extern Uchar CONVERT;
extern Uchar Amiga_EXE_Header;
-#ifdef __cplusplus
-extern "C" {
-#endif
extern void pw_write_log (const char *, ...);
extern FILE *moduleripper2_fopen (const char *name, const char *mode, const char *aid, int addr, int size);
extern FILE *moduleripper_fopen (const char *aname, const char *amode);
-#ifdef __cplusplus
-}
-#endif