File libffi-3.0.10-win64_no_undefined.patch of Package mingw32-libffi

--- configure.ac.old	2011-09-27 15:41:15.049502569 +0200
+++ configure.ac	2011-09-27 15:41:20.489502572 +0200
@@ -182,6 +182,15 @@
 
   x86_64-*-cygwin* | x86_64-*-mingw*)
 	TARGET=X86_WIN64; TARGETDIR=x86
+	# All mingw/cygwin/win32 builds require -no-undefined for sharedlib.
+	# We must also check with_cross_host to decide if this is a native
+	# or cross-build and select where to install dlls appropriately.
+	if test -n "$with_cross_host" &&
+	   test x"$with_cross_host" != x"no"; then
+	  AM_LTLDFLAGS='-no-undefined -bindir "$(toolexeclibdir)"';
+	else
+	  AM_LTLDFLAGS='-no-undefined -bindir "$(bindir)"';
+	fi
 	;;
 
   x86_64-*-*)