From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Subject: Re: [Qemu-devel] [PATCH] CPPFLAGS+= in Makefile.target
Date: Fri, 25 Jan 2008 14:39:57 +0000 [thread overview]
Message-ID: <200801251439.58215.paul@codesourcery.com> (raw)
In-Reply-To: <18329.61367.473953.391435@mariner.uk.xensource.com>
> Saying CPPFLAGS+= is much more convenient if for any reason the
> external build environment would like to pass unusual CPPFLAGS.
No. This doesn't do what you thing it does.
The most common way of overriding these variables is to pass them on the
commandline, i.e. "make CPPFLAGS=-blah". This overrides all assignments to
that variable including +=.
Paul
next prev parent reply other threads:[~2008-01-25 14:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 14:18 [Qemu-devel] [PATCH] CPPFLAGS+= in Makefile.target Ian Jackson
2008-01-25 14:39 ` Paul Brook [this message]
2008-01-25 14:44 ` Ian Jackson
2008-01-25 14:48 ` Ian Jackson
2008-01-25 15:36 ` Paul Brook
2008-01-25 15:37 ` Ian Jackson
2008-01-25 15:53 ` Paul Brook
2008-01-25 16:03 ` Ian Jackson
2008-01-25 16:03 ` Paul Brook
2008-01-25 16:12 ` Ian Jackson
2008-01-25 16:22 ` Paul Brook
2008-01-25 16:29 ` Ian Jackson
2008-01-28 9:09 ` Ronan Keryell
2008-01-28 11:35 ` Thiemo Seufer
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