--- Makefile.PL.orig	2017-06-24 12:22:42.000000000 -0700
+++ Makefile.PL	2017-06-24 12:24:16.000000000 -0700
@@ -235,6 +235,7 @@
 sub get_curl_incdir
 {
 	my @incpath = (
+		qw(@@MP_CURL_INCDIR@@),
 		( defined $curl{incdir} ? $curl{incdir} : () ),
 		( $curl{cflags} =~ /-I(\S+)/g ),
 		( defined $curl{prefix} ? "$curl{prefix}/include" : () ),