diff -u -r ../libffi-60e4250a77eb3fde500bfd68ec40519fe34b21bd/include/Makefile.am ./include/Makefile.am
--- ../libffi-60e4250a77eb3fde500bfd68ec40519fe34b21bd/include/Makefile.am	2016-09-04 09:34:18.000000000 -0400
+++ ./include/Makefile.am	2016-09-13 10:44:07.832744478 -0400
@@ -6,5 +6,5 @@
 noinst_HEADERS=ffi_common.h ffi_cfi.h
 EXTRA_DIST=ffi.h.in
 
-includesdir = $(libdir)/@PACKAGE_NAME@-@PACKAGE_VERSION@/include
+includesdir = $(includedir)
 nodist_includes_HEADERS = ffi.h ffitarget.h