$OpenBSD: patch-dyn_load_c,v 1.6 2008/04/01 17:41:13 kurt Exp $
--- dyn_load.c.orig	Thu Jun 28 17:36:03 2007
+++ dyn_load.c	Thu Mar 20 18:09:28 2008
@@ -63,6 +63,7 @@ static int (*GC_has_static_roots)(const char *, void *
     !defined(HPUX) && !(defined(LINUX) && defined(__ELF__)) && \
     !defined(AIX) && !defined(SCO_ELF) && !defined(DGUX) && \
     !(defined(FREEBSD) && defined(__ELF__)) && \
+    !(defined(OPENBSD) && (defined(__ELF__) || defined(M68K))) && \
     !(defined(NETBSD) && defined(__ELF__)) && !defined(HURD) && \
     !defined(DARWIN) && !defined(CYGWIN32)
  --> We only know how to find data segments of dynamic libraries for the
@@ -84,9 +85,9 @@ static int (*GC_has_static_roots)(const char *, void *
 
 #if defined(LINUX) && defined(__ELF__) || defined(SCO_ELF) || \
     (defined(FREEBSD) && defined(__ELF__)) || defined(DGUX) || \
+    (defined(OPENBSD) && defined(__ELF__)) || \
     (defined(NETBSD) && defined(__ELF__)) || defined(HURD)
 #   include <stddef.h>
-#   include <elf.h>
 #   include <link.h>
 #endif
 
@@ -99,7 +100,7 @@ static int (*GC_has_static_roots)(const char *, void *
 #      else
 #        define ElfW(type) Elf64_##type
 #      endif
-#    elif defined(NETBSD)
+#    elif defined(NETBSD) || defined(OPENBSD)
 #      if ELFSIZE == 32
 #        define ElfW(type) Elf32_##type
 #      else
@@ -216,6 +217,7 @@ void GC_register_dynamic_libraries()
 
 #if defined(LINUX) && defined(__ELF__) || defined(SCO_ELF) || \
     (defined(FREEBSD) && defined(__ELF__)) || defined(DGUX) || \
+    (defined(OPENBSD) && defined(__ELF__)) || \
     (defined(NETBSD) && defined(__ELF__)) || defined(HURD)
 
 
@@ -414,7 +416,7 @@ GC_bool GC_register_main_static_data()
 /* This doesn't necessarily work in all cases, e.g. with preloaded
  * dynamic libraries.						*/
 
-#if defined(NETBSD)
+#if defined(NETBSD) || defined(OPENBSD)
 #  include <sys/exec_elf.h>
 /* for compatibility with 1.4.x */
 #  ifndef DT_DEBUG