From 518e1001737d4bdd2abbc1bc00d7120c6f92af57 Mon Sep 17 00:00:00 2001
From: "kfraser@localhost.localdomain" <kfraser@localhost.localdomain>
Date: Wed, 2 Aug 2006 15:06:29 +0100
Subject: [PATCH] [XEN] Allow quick building of individual files.

For the purpose of quick compile testing of (namely smaller) changes,
provide a
means to build individual pieces underneath the xen dir (could equally
be applied
to tools, and the top level Makefile could also be made aware of this
logic to
make things even more consistent). At once, add a way to only
pre-process files
in case some of the more complicated macros need change and hence
inspection
of the results.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
---
 xen/Makefile | 12 ++++++++++++
 xen/Rules.mk |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/xen/Makefile b/xen/Makefile
index d9f5322eb6..cad1dc1407 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -146,3 +146,15 @@ _cscope:
 .PHONY: MAP
 MAP:
 	$(NM) $(TARGET) | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
+
+.PHONY: FORCE
+FORCE:
+
+%.o %.i: %.c FORCE
+	$(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+
+%.o %.s: %.S FORCE
+	$(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+
+%/: FORCE
+	$(MAKE) -f $(BASEDIR)/Rules.mk -C $* built_in.o
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 17a0eb04aa..15c0af3cc1 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -105,3 +105,9 @@ _clean_%/: FORCE
 
 %.o: %.S $(HDRS) Makefile
 	$(CC) $(CFLAGS) $(AFLAGS) -c $< -o $@
+
+%.i: %.c $(HDRS) Makefile
+	$(CPP) $(CFLAGS) $< -o $@
+
+%.s: %.S $(HDRS) Makefile
+	$(CPP) $(CFLAGS) $(AFLAGS) $< -o $@
-- 
2.30.2