--- extlibs/gc-cvs/include/private/gc_priv.h.orig 2020-08-24 13:57:21 UTC +++ extlibs/gc-cvs/include/private/gc_priv.h @@ -2169,7 +2169,7 @@ GC_EXTERN signed_word GC_bytes_found; #if defined(NEED_FIND_LIMIT) \ || (defined(USE_PROC_FOR_LIBRARIES) && defined(THREADS)) - JMP_BUF GC_jmp_buf; + GC_EXTERN JMP_BUF GC_jmp_buf; /* Set up a handler for address faults which will longjmp to */ /* GC_jmp_buf; */