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Date: Wed, 09 Jul 2014 10:59:59 +0200 From: Michal Marek <mmarek@...e.cz> To: Masahiro Yamada <yamada.m@...panasonic.com> CC: linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, Sam Ravnborg <sam@...nborg.org> Subject: Re: [PATCH] kbuild: Use symbolic link to the source tree for out-of-tree build On 2014-07-09 08:27, Masahiro Yamada wrote: > Since commit 9da0763bd, the variable 'srctree' is set as follows: > > [1] Building in the source tree > => srctree is set to '.' > [2] Building in a subdir right under the source tree > => srctree is set to '..' > [3] Other cases > => srctree is set to the absolute path to the source tree > > Pros are more readable compiler messages, WARN_ON() etc. > for case [1] and [2]. (but not [3]) > > Cons are we have to do build-test for 3 cases when adding > some changes to the build infrastructure. > > We want to treat case [2] and [3] in the same way like prior to > commit 9da0763bd, keeping the compact log messages. > > The idea here is to create a symbolic link 'srctree' pointing > to $(KBUILD_SRC) at the very early stage of the build process. If the symlink points to an absolute path, then you can't move the source and build tree around anymore. Michal -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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