$NetBSD: patch-Makefile.in,v 1.1 2020/12/04 12:15:41 jperkin Exp $

Do not install duo_unix_support (very Linux specific, assumes /etc, not very
useful in a pkgsrc context).

--- Makefile.in.orig	2020-05-18 16:08:52.000000000 +0000
+++ Makefile.in
@@ -371,7 +371,7 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ACLOCAL_AMFLAGS = -I autotools
-SUBDIRS = compat lib login_duo duo_unix_support $(am__append_1) tests \
+SUBDIRS = compat lib login_duo $(am__append_1) tests \
 	tests/unity_tests
 dist_doc_DATA = README.md CONTRIBUTING.md AUTHORS CHANGES LICENSE