libffi.pc needed

[d.henman]

I'm trying to build a package that reqruires   libffi.pc  

I looked arount and found: http://cygwin-rurban.googlecode.com/svn/trunk/contrib/libffi/CYGWIN-PATCHES/README

$ cygcheck -c | grep ffi
libffi4                         4.5.3-3                          OK

Says that I have libffi4, so I guess only the libffi.pc file is missing.

Should there be one in the libffi4 package? 
If not how would you handle packages that require it?

Thanks

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