diff -up libffi-3.1/libffi.pc.in.fixpath libffi-3.1/libffi.pc.in

--- libffi-3.1/libffi.pc.in.fixpath	2014-04-25 19:45:13.000000000 +0200

+++ libffi-3.1/libffi.pc.in	2014-06-12 12:06:06.000000000 +0200

@@ -1,11 +1,10 @@

 prefix=@prefix@

 exec_prefix=@exec_prefix@

 libdir=@libdir@

-toolexeclibdir=@toolexeclibdir@

-includedir=${libdir}/@PACKAGE_NAME@-@PACKAGE_VERSION@/include

+includedir=@includedir@

 Name: @PACKAGE_NAME@

 Description: Library supporting Foreign Function Interfaces

 Version: @PACKAGE_VERSION@

-Libs: -L${toolexeclibdir} -lffi

+Libs: -L${libdir} -lffi

 Cflags: -I${includedir}