$OpenBSD: patch-rts_Linker_c,v 1.2 2007/09/16 20:05:12 kili Exp $

We don't have MAP_ANONYMOUS (which is the same as MAP_ANON on Linux,
but the latter has been deprecated). We also don't have that MAP_32BIT
Linux provides for amd64, so just zap that flag to 0. In addition
EM_X86_64 is called EM_AMD64 on OpenBSD, so just replace it to
reenable GHCi (noted by dons).

--- rts/Linker.c.orig	Wed Apr 25 19:10:41 2007
+++ rts/Linker.c	Sun Sep 16 12:27:02 2007
@@ -73,6 +73,11 @@
 
 #endif
 
+#ifdef openbsd_HOST_OS
+#  define MAP_ANONYMOUS MAP_ANON
+#  define MAP_32BIT 0
+#endif
+
 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS)
 #  define OBJFORMAT_ELF
 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
@@ -2923,8 +2928,8 @@ ocVerifyImage_ELF ( ObjectCode* oc )
       case EM_IA_64: IF_DEBUG(linker,debugBelch( "ia64" )); break;
 #endif
       case EM_PPC:   IF_DEBUG(linker,debugBelch( "powerpc32" )); break;
-#ifdef EM_X86_64
-      case EM_X86_64: IF_DEBUG(linker,debugBelch( "x86_64" )); break;
+#ifdef EM_AMD64
+      case EM_AMD64: IF_DEBUG(linker,debugBelch( "x86_64" )); break;
 #endif
       default:       IF_DEBUG(linker,debugBelch( "unknown" ));
                      errorBelch("%s: unknown architecture", oc->fileName);