[oe] [RFC] Badness with -ibad, a replacement for zecke-no-host-includes.patch.

[Richard Purdie]

On Thu, 2010-07-08 at 23:36 +0800, Holger Freyther wrote:
> On 07/08/2010 01:39 PM, Graham Gower wrote:
> > This patch introduces a new command line parameter to gcc (at
> > Zecke's suggestion), -ibad, which may be used to specify
> > blacklisted include prefixes. E.g.
> > 
> > grg at eye7:/tmp$ ~/oe2/tmp/cross/mipsel/bin/mipsel-angstrom-linux-gcc -c test.c -ibad /usr/include -I /usr/include
> > CROSS COMPILE Badness: /usr/include in INCLUDEPATH: /usr/include
> 
> nice! The only thing that is worrying is the question how we make sure
> these bad path's are enforced.
> 
> E.g. a recipe not honoring our CPPFLAGS might silently pass this check
> (while before it was hardcoded into the compiler). My proposal would be
> to extend the sanity check and grep the compile log for gcc and -ibad
> and fail if gcc exists but -ibad does not occur?

How about making this option an environmental variable rather than a
flag? I've seen that technique used to great effect for this exact
reason before...

Cheers,

Richard