diff -ru Makefile.org Makefile
--- Makefile.org	Tue Apr  5 00:41:50 2011
+++ Makefile	Tue Nov  8 18:24:28 2011
@@ -278,7 +278,7 @@
 
         # Compiles a regular linux executable for the native platform
         BIN = ../bin/grafx2
-        COPT = -W -Wall -Wdeclaration-after-statement -std=c99 -c -g `sdl-config --cflags` $(TTFCOPT) $(LUACOPT) $(JOYCOPT) $(VKEYCOPT) -O$(OPTIM)
+        COPT = -W -Wall -Wdeclaration-after-statement -std=c99 -c -g `sdl-config --cflags` $(TTFCOPT) $(LUACOPT) $(JOYCOPT) $(VKEYCOPT) -O$(OPTIM) -I/usr/local/include/libpng
         LOPT = `sdl-config --libs` -lSDL_image $(TTFLOPT) -lpng $(LUALOPT) -lm
         # Use gcc for compiling. Use ncc to build a callgraph and analyze the code.
         CC = gcc
diff -ru misc.c.org misc.c
--- misc.c.org	Sun Feb  6 18:16:48 2011
+++ misc.c	Tue Nov  8 18:04:53 2011
@@ -735,7 +735,10 @@
 #if defined(__WIN32__)
 #define _WIN32_WINNT 0x0500
 #include <windows.h>
-#elif defined(__macosx__) || defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(__macosx__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+  #if defined(__OpenBSD__)
+  #include <sys/param.h>
+  #endif
   #include <sys/sysctl.h>
 #elif defined(__BEOS__) || defined(__HAIKU__)
   // sysinfo not implemented
@@ -777,7 +780,7 @@
   mstt.dwLength = sizeof(MEMORYSTATUS);
   GlobalMemoryStatus(&mstt);
   return mstt.dwAvailPhys;
-#elif defined(__macosx__) || defined(__FreeBSD__) || defined(__NetBSD__)
+#elif defined(__macosx__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
   int mib[2];
   int maxmem;
   size_t len;
diff -ru mountlist.c.org mountlist.c
--- mountlist.c.org	Fri Mar 11 18:39:54 2011
+++ mountlist.c	Tue Nov  8 18:17:50 2011
@@ -23,11 +23,16 @@
 #if(!defined(__WIN32__))&&(!defined(__amigaos4__))&&(!defined(__AROS__))&&(!defined(__MORPHOS__))&&(!defined(__amigaos__))
 
 // We don't use autoconf and all that in grafx2, so let's do the config here ...
-#if defined(__macosx__) || defined(__FreeBSD__)                        // MacOS X is POSIX compliant
+#if defined(__macosx__) || defined(__FreeBSD__) || defined(__OpenBSD__)                       // MacOS X is POSIX compliant
     #define MOUNTED_GETMNTINFO
 #if defined(__macosx__)
     #include <sys/types.h>
 #endif
+#if defined(__OpenBSD__)
+    #define HAVE_STRUCT_STATFS_F_FSTYPENAME 1
+    #include <sys/param.h> /* types.h needs this */
+    #include <sys/types.h>
+#endif
 #elif defined(__NetBSD__)
     #define MOUNTED_GETMNTINFO2
 #elif defined(__BEOS__) || defined(__HAIKU__)
@@ -463,7 +468,7 @@
         me = malloc (sizeof *me);
         me->me_devname = strdup (fsp->f_mntfromname);
         me->me_mountdir = strdup (fsp->f_mntonname);
-#if defined(__macosx__)
+#if defined(__macosx__) || defined(__OpenBSD__)
         me->me_type = fsp->f_fstypename;
 #else
         me->me_type = fsp->fs_typename;