added .rc info to DLLs produced with MinGW/cygwin

diff --git a/configure.ac b/configure.ac
index f58ef81..ac08e0b 100644
--- a/configure.ac
+++ b/configure.ac

@@ -44,6 +44,7 @@
 	LIBS="-lsetupapi -lole32"
 	AM_CFLAGS="-Wshadow"	
 	AM_LDFLAGS="-no-undefined -avoid-version"
+	AC_CHECK_TOOL(RC, windres, no)
 	;;
 *-cygwin*)
 	AC_DEFINE(OS_WINDOWS, [], [Windows backend])
@@ -54,6 +55,7 @@
 	LIBS="-lpthread -lsetupapi -lole32"
 	AM_CFLAGS=""	
 	AM_LDFLAGS="-no-undefined -avoid-version"
+	AC_CHECK_TOOL(RC, windres, no)
 	;;	
 *)
 	AC_MSG_ERROR([unsupported operating system])

diff --git a/libusb/Makefile.am b/libusb/Makefile.am
index c252b3d..6152daa 100644
--- a/libusb/Makefile.am
+++ b/libusb/Makefile.am

@@ -8,7 +8,7 @@
 
 LINUX_USBFS_SRC = $(THREADS_SRC) os/poll_posix.h os/linux_usbfs.h os/linux_usbfs.c
 DARWIN_USB_SRC = $(THREADS_SRC) os/poll_posix.h os/darwin_usb.h os/darwin_usb.c
-WINDOWS_USB_SRC = $(THREADS_SRC) os/poll_windows.h os/poll_windows.c os/windows_usb.h os/windows_usb.c
+WINDOWS_USB_SRC = $(THREADS_SRC) os/poll_windows.h os/poll_windows.c os/windows_usb.h os/windows_usb.c ../msvc/libusb-1.0.rc
 
 EXTRA_DIST = $(LINUX_USBFS_SRC) $(DARWIN_USB_SRC) $(WINDOWS_USB_SRC)
 
@@ -23,6 +23,8 @@
 
 if OS_WINDOWS
 OS_SRC = $(WINDOWS_USB_SRC)
+.rc.lo:
+	$(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(RC) $(RCFLAGS) -i $< -o $@
 endif
 
 libusb_1_0_la_CFLAGS = $(VISIBILITY_CFLAGS) $(AM_CFLAGS)