Get in there...

src/backend/port/Makefile.in

+#-------------------------------------------------------------------------
+#
+# Makefile--
+#    Makefile for the port-specific subsystem of the backend
+#
+# You must invoke this make file with the PORTNAME variable set to the
+# name of a port, i.e. the name of a subdirectory of the current directory.
+# Example: 
+#
+#    make SUBSYS.o PORTNAME=linux
+#
+# We have two different modes of operation: 1) put stuff specific to Port X
+# in subdirectory X and have that subdirectory's make file make it all, and 
+# 2) use conditional statements in the present make file to include what's
+# necessary for a specific port in our own output.  (1) came first, but (2)
+# is superior for many things, like when the same thing needs to be done for
+# multiple ports and you don't want to duplicate files in multiple 
+# subdirectories.  Much of the stuff done via Method 1 today should probably
+# be converted to Method 2.  
+#
+# IDENTIFICATION
+#    $Header: /cvsroot/pgsql/src/backend/port/Attic/Makefile.in,v 1.1 1997/02/05 21:27:04 scrappy Exp $
+#
+#-------------------------------------------------------------------------
+
+include ../../Makefile.global
+
+ifndef PORTNAME
+.DEFAULT all: 
+	@echo "Error:  Must invoke make with PORTNAME= argument."
+	@false
+else
+
+OBJS = $(PORTNAME)/SUBSYS.o @INET_ATON@
+
+all: submake SUBSYS.o
+
+SUBSYS.o: $(OBJS)
+	$(LD) -r -o SUBSYS.o $(OBJS)
+
+.PHONY: submake clean dep
+
+submake:
+	$(MAKE) -C $(PORTNAME) SUBSYS.o
+
+clean:
+	rm -f $(OBJS)
+	$(MAKE) -C $(PORTNAME) clean
+
+depend dep:
+	$(CC) -MM $(INCLUDE_OPT) *.c >depend
+	$(MAKE) -C $(PORTNAME) $@
+
+ifeq (depend,$(wildcard depend))
+include depend
+endif
+
+endif
+