diff --git a/errno/GNUmakefile b/errno/GNUmakefile
index 21f4a2d..79c9bef 100644
--- a/errno/GNUmakefile
+++ b/errno/GNUmakefile
@@ -1,6 +1,9 @@
-# $Id: GNUmakefile,v 1.3 2003-02-14 11:59:43 hjp Exp $
+# $Id: GNUmakefile,v 1.4 2008-04-05 10:04:53 hjp Exp $
 # $Log: GNUmakefile,v $
-# Revision 1.3  2003-02-14 11:59:43  hjp
+# Revision 1.4  2008-04-05 10:04:53  hjp
+# added GNUmake*.sh
+#
+# Revision 1.3  2003/02/14 11:59:43  hjp
 # Added list of #defines from HP-UX.
 #
 # Revision 1.2  1998/05/31 01:20:06  hjp
@@ -8,7 +11,6 @@
 #
 
 include GNUmakevars
-include GNUmakerules
 
 all: errno
 
@@ -18,4 +20,12 @@ errno_list.c: errno.list make_errno_list
 
 clean:
 	rm errno
+
+GNUmakevars: GNUmakevars.sh
+	sh ./$^ > $@
+GNUmakerules: GNUmakerules.sh
+	sh ./$^ > $@
+
 install: $(BINDIR)/errno
+
+include GNUmakerules
diff --git a/errno/GNUmakerules.sh b/errno/GNUmakerules.sh
new file mode 100755
index 0000000..952629f
--- /dev/null
+++ b/errno/GNUmakerules.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+echo "\$(BINDIR)/%: %"
+echo -e "\tcp \$^ \$@"
+echo "\$(MAN1DIR)/%: %"
+echo -e "\tcp \$^ \$@"
diff --git a/errno/GNUmakevars.sh b/errno/GNUmakevars.sh
new file mode 100755
index 0000000..1443f83
--- /dev/null
+++ b/errno/GNUmakevars.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+prefix=${prefix:-/usr/local}
+echo "BINDIR=$prefix/bin"
+
+for i in "$prefix/share/man/man1" "$prefix/man/man1"
+do
+	if [ -d "$i" -a -w "$i" ]
+	then
+		echo "MAN1DIR=$i"
+		break;
+	fi
+done
+
+echo
+echo "all:"