Index: libusb-0.1.12/configure.in
===================================================================
--- libusb-0.1.12.orig/configure.in	2009-05-22 17:47:19.000000000 +0000
+++ libusb-0.1.12/configure.in	2009-05-22 17:48:07.000000000 +0000
@@ -11,6 +11,7 @@
 #undef LINUX_API
 #undef BSD_API
 #undef DARWIN_API
+#undef DUMMY_API
 
 #undef HAVE_OLD_DEV_USB_USB_H
 
@@ -89,6 +90,7 @@
 LINUX_API=0
 DARWIN_API=0
 BSD_API=0
+DUMMY_API=0
 
 AC_MSG_CHECKING(for what USB OS support)
 case $host in
@@ -96,6 +98,7 @@
     AC_DEFINE(LINUX_API, 1)
     AC_DEFINE(BSD_API, 0)
     AC_DEFINE(DARWIN_API, 0)
+    AC_DEFINE(DUMMY_API, 0)
     LINUX_API=1
     os_support=linux
     AC_MSG_RESULT(Linux)
@@ -105,6 +108,7 @@
     AC_DEFINE(BSD_API, 1)
     AC_DEFINE(LINUX_API, 0)
     AC_DEFINE(DARWIN_API, 0)
+    AC_DEFINE(DUMMY_API, 0)
     BSD_API=1
     os_support=bsd
     AC_MSG_RESULT(FreeBSD, OpenBSD and/or NetBSD)
@@ -114,24 +118,33 @@
     AC_DEFINE(DARWIN_API, 1) 
     AC_DEFINE(LINUX_API, 0)
     AC_DEFINE(BSD_API, 0)
+    AC_DEFINE(DUMMY_API, 0)
     DARWIN_API=1
     os_support=darwin
     AC_MSG_RESULT(Darwin and/or MacOS 10)
     OSLIBS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind"
     ;;
   *)
-    AC_MSG_RESULT(unknown operating system)
-    AC_MSG_ERROR(libusb does not support compiling for $host)
+    AC_DEFINE(DARWIN_API, 0) 
+    AC_DEFINE(LINUX_API, 0)
+    AC_DEFINE(BSD_API, 0)
+    AC_DEFINE(DUMMY_API, 1)
+    DUMMY_API=1
+    os_support=dummy
+    AC_MSG_RESULT(unknown operating system $host)
+    OSLIBS=""
     ;;
 esac
 
 AC_SUBST(DARWIN_API)
 AC_SUBST(LINUX_API)
 AC_SUBST(BSD_API)
+AC_SUBST(DUMMY_API)
 
 AM_CONDITIONAL(LINUX_API, test "$os_support" = "linux")
 AM_CONDITIONAL(BSD_API, test "$os_support" = "bsd")
 AM_CONDITIONAL(DARWIN_API, test "$os_support" = "darwin")
+AM_CONDITIONAL(DUMMY_API, test "$os_support" = "dummy")
 
 AC_SUBST(OSLIBS)
 
Index: libusb-0.1.12/Makefile.am
===================================================================
--- libusb-0.1.12.orig/Makefile.am	2009-05-22 17:47:19.000000000 +0000
+++ libusb-0.1.12/Makefile.am	2009-05-22 17:48:07.000000000 +0000
@@ -17,7 +17,7 @@
 EXTRA_DIST = LICENSE libusb.spec.in libusb.spec libusb-config.in README.in README \
              INSTALL.libusb.in INSTALL.libusb Doxyfile apidocs/header.html \
              apidocs/footer.html apidocs/doxygen.css apidocs/doxygen.png libusb.pc.in
-EXTRA_libusb_la_SOURCE = linux.c linux.h bsd.c darwin.c
+EXTRA_libusb_la_SOURCE = linux.c linux.h bsd.c darwin.c dummy.c
 
 lib_LTLIBRARIES = libusb.la libusbpp.la
 
@@ -36,7 +36,7 @@
 PREBIND_FLAGS=-Wl,-seg1addr,0x01666000
 PREBIND_FLAGSPP=-Wl,-seg1addr,0x01676000
 else
-OS_SUPPORT = 
+OS_SUPPORT = dummy.c
 endif
 endif
 endif
Index: libusb-0.1.12/dummy.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ libusb-0.1.12/dummy.c	2009-05-22 17:47:34.000000000 +0000
@@ -0,0 +1,119 @@
+/*
+ * dummy USB support
+ *
+ * Derived from BSD version by Samuel Thibault
+ *
+ * This library is covered by the LGPL, read LICENSE for details.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <assert.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+
+#include "usbi.h"
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+int usb_os_open(usb_dev_handle *dev)
+{
+  return 0;
+}
+
+int usb_os_close(usb_dev_handle *dev)
+{
+  return 0;
+}
+
+int usb_set_configuration(usb_dev_handle *dev, int configuration)
+{
+  return 0;
+}
+
+int usb_claim_interface(usb_dev_handle *dev, int interface)
+{
+  return 0;
+}
+
+int usb_release_interface(usb_dev_handle *dev, int interface)
+{
+  return 0;
+}
+
+int usb_set_altinterface(usb_dev_handle *dev, int alternate)
+{
+  return 0;
+}
+
+int usb_bulk_write(usb_dev_handle *dev, int ep, const char *bytes, int size,
+                   int timeout)
+{
+  return -ENOSYS;
+}
+
+int usb_bulk_read(usb_dev_handle *dev, int ep, char *bytes, int size,
+                  int timeout)
+{
+  return -ENOSYS;
+}
+
+int usb_interrupt_write(usb_dev_handle *dev, int ep, const char *bytes, int size,
+                        int timeout)
+{
+  return -ENOSYS;
+}
+
+int usb_interrupt_read(usb_dev_handle *dev, int ep, char *bytes, int size,
+                       int timeout)
+{
+  return -ENOSYS;
+}
+
+int usb_control_msg(usb_dev_handle *dev, int requesttype, int request,
+                     int value, int index, char *bytes, int size, int timeout)
+{
+  return -ENOSYS;
+}
+
+int usb_os_find_busses(struct usb_bus **busses)
+{
+  *busses = NULL;
+  return 0;
+}
+
+int usb_os_find_devices(struct usb_bus *bus, struct usb_device **devices)
+{
+  *devices = NULL;
+  return 0;
+}
+
+int usb_os_determine_children(struct usb_bus *bus)
+{
+  return -ENOSYS;
+}
+
+void usb_os_init(void)
+{
+}
+
+int usb_resetep(usb_dev_handle *dev, unsigned int ep)
+{
+  return -ENOSYS;
+}
+
+int usb_clear_halt(usb_dev_handle *dev, unsigned int ep)
+{
+  return -ENOSYS;
+}
+
+int usb_reset(usb_dev_handle *dev)
+{
+  return -ENOSYS;
+}
+