From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: missing dependency to compat/xen.h
Date: Fri, 19 Sep 2014 11:28:48 +0200
Message-ID: <20140919092848.GA23249@aepfle.de>
References: <20140917110104.GA27369@aepfle.de>
	<54198E130200007800035A72@mail.emea.novell.com>
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To: Jan Beulich <JBeulich@suse.com>
Cc: xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org

On Wed, Sep 17, Jan Beulich wrote:

> >>> On 17.09.14 at 13:01, <olaf@aepfle.de> wrote:
> > How is compat/xen.h supposed to be created?
> This make rule
> 
> $(TARGET): delete-unfresh-files
> 	$(MAKE) -C tools
> 	$(MAKE) -f $(BASEDIR)/Rules.mk include/xen/compile.h
> 	[ -e include/asm ] || ln -sf asm-$(TARGET_ARCH) include/asm
> 	$(MAKE) -f $(BASEDIR)/Rules.mk -C include
> 	$(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) asm-offsets.s
> 	$(MAKE) -f $(BASEDIR)/Rules.mk include/asm-$(TARGET_ARCH)/asm-offsets.h
> 	$(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) $(TARGET)
> 
> is - afaict - guaranteeing that the include/compat/ generation
> happens before that of asm-offsets.s.

I had a change like shown below, which confused the xen build. Meanwhile
I found a way to achive my goal without such a change by reusing the
existing .phony target.

Olaf

--- a/Config.mk
+++ b/Config.mk
@@ -167,6 +167,9 @@ define move-if-changed
        if ! cmp -s $(1) $(2); then mv -f $(1) $(2); else rm -f $(1); fi
 endef
 
+.PHONY: FORCE
+FORCE:
+
 buildmakevars2file = $(eval $(call buildmakevars2file-closure,$(1)))
 define buildmakevars2file-closure
     .PHONY: genpath