diff --git a/tiny/GNUmakefile b/tiny/GNUmakefile
index 78bfd06..a069140 100644
--- a/tiny/GNUmakefile
+++ b/tiny/GNUmakefile
@@ -1,8 +1,13 @@
-include GNUmakevars
+-include GNUmakevars
 
 CONFDIR=../../configure
 CONFDIR_exists=$(shell [ -d $(CONFDIR) ] && echo ok)
 
+GNUmakevars: GNUmakevars.sh
+	sh ./$^ > $@
+GNUmakerules: GNUmakerules.sh
+	sh ./$^ > $@
+
 all: configure dus fnp fnpa fnpc isodate psg save crypt
 
 clean:
@@ -45,4 +50,4 @@ configure: $(CONFDIR)/start \
 
 endif
 
-include GNUmakerules
+-include GNUmakerules
diff --git a/tiny/GNUmakerules.sh b/tiny/GNUmakerules.sh
new file mode 100755
index 0000000..e523b37
--- /dev/null
+++ b/tiny/GNUmakerules.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+echo "\$(BINDIR)/%: %"
+echo -e "\tcp \$^ \$@"
diff --git a/tiny/GNUmakevars.sh b/tiny/GNUmakevars.sh
new file mode 100755
index 0000000..a7de4ae
--- /dev/null
+++ b/tiny/GNUmakevars.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+prefix=${prefix:-/usr/local}
+echo "BINDIR=$prefix/bin"
+echo
+echo "all:"