[OE-core] [PATCH] gcc-configure-target: Set native-system-header-dir for target gcc

[Richard Purdie]

On Wed, 2012-08-01 at 08:09 -0700, Khem Raj wrote:
> On Wed, Aug 1, 2012 at 1:07 AM, Richard Purdie
> <richard.purdie at linuxfoundation.org> wrote:
> > Without this set, in the case host=target (which it does for on-target
> > gcc), the native header directory is set to the target sysroot with
> > no prefix. This means it would look for sdt.h on the build system
> > instead of in the target headers and this can lead to build failures
> > and is host contamination of the build.
> >
> > The correct fix is to explicitly set the native header directory to
> > the correct location and then the headers get detected correctly.
> 
> one concern I think is what will happen to gxxinclude dir if this is
> set. if it will become relative to native headers dir as well
> I think you have to try it out the compiler on target

I tested the target compiler and couldn't find any problem. I also
checked the output of strings on the gcc binaries/libs/headers and
couldn't spot anything nasty. I've therefore merged this but we should
keep it in mind in case of problems.

Cheers,

Richard