--- Makefile.in.orig	2018-12-19 23:18:25 UTC
+++ Makefile.in
@@ -45,8 +45,9 @@ ifeq ($(use_xdg),yes)
   XDGDIR = xdg
 endif
 
-INSTALL_PROGRAM = ${INSTALL} -m 755
-INSTALL_DATA = ${INSTALL} -m 644
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_DATA = @INSTALL_DATA@
 
 export