--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- configure
+++ configure
@@ -2636,7 +2636,7 @@ 
 fi
 
 cat >do_mk_btri.sh <<END_OF_DO_MK_BTRI
-$dcpp "\$1" | sed -n "/^[ 	]*[\\"'%]/p" | $mk_btri_cmd
+$dcpp -P "\$1" | sed -n "/^[ 	]*[\\"'%]/p" | $mk_btri_cmd
 END_OF_DO_MK_BTRI
 
 cat >TABMakefile <<END_OF_TABMAKEFILE1