From: Sam Ravnborg <sam@neptun.(none)>
Date: Mon, 15 Oct 2007 20:17:25 +0000 (+0200)
Subject: kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP
X-Git-Tag: v2.6.24-rc1~830^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06c5040cdb13d27adad118f2fbfae905a1911b37;p=pandora-kernel.git

kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP

The variable CPPFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.

This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the
tree and enabling one to use:
make CPPFLAGS=...
to specify additional CPP commandline options.

Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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