--- a/contrib/diff-highlight/Makefile.orig	2018-11-21 08:58:11.000000000 -0600
+++ b/contrib/diff-highlight/Makefile	2018-12-03 14:13:53.000000000 -0600
@@ -1,6 +1,6 @@
 all: diff-highlight
 
-PERL_PATH = /usr/bin/perl
+PERL_PATH = %PREFIX%/perl
 -include ../../config.mak
 
 PERL_PATH_SQ = $(subst ','\'',$(PERL_PATH))