Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -97,18 +97,22 @@
 # define OF_LIKELY(cond) (__builtin_expect(!!(cond), 1))
 # define OF_UNLIKELY(cond) (__builtin_expect(!!(cond), 0))
 # define OF_CONST_FUNC __attribute__((__const__))
 # define OF_NO_RETURN_FUNC __attribute__((__noreturn__))
 # define OF_WEAK_REF(sym) __attribute__((__weakref__(sym)))
-# define OF_VISIBILITY_HIDDEN __attribute__((__visibility__("hidden")))
 #else
 # define OF_INLINE inline
 # define OF_LIKELY(cond) (cond)
 # define OF_UNLIKELY(cond) (cond)
 # define OF_CONST_FUNC
 # define OF_NO_RETURN_FUNC
 # define OF_WEAK_REF(sym)
+#endif
+
+#ifndef OF_DJGPP
+# define OF_VISIBILITY_HIDDEN __attribute__((__visibility__("hidden")))
+#else
 # define OF_VISIBILITY_HIDDEN
 #endif
 
 #if __STDC_VERSION__ >= 201112L
 # define OF_ALIGN(size) _Alignas(size)