[OE-core] [PATCH 1/1] oe-init-build-env, scripts/oe-buildenv-internal: add error detecting for $BDIR

[Richard Purdie]

On Tue, 2011-08-02 at 14:08 +0800, Dexuan Cui wrote:
> [YOCTO #671]
> 
> "readlink -f" in Ubuntu 10.04 is buggy: it doesn't ignore a trailing / (e.g.,
> "readlink -f /tmp/non-existent-dir/" returns nothing, but according to
> http://www.gnu.org/s/coreutils/manual/coreutils.pdf it should do that --
> hence we get bug 671. It seems Ubuntu 10.10 or even later Ubuntu 11.04,
> and other Linux distributions(e.g., Open Suse 11.4) haven't such an issue.
> 
> So I think we should detect this and ask Ubuntu 10.04 users to avoid supply
> a path with trailing slash here.
> 
> Moreever, I also add the detection of non-existent path, e.g.,
> source oe-init-build-env /non-existent-dir/build
> can be detected and we'll print an error msg.
> And, if we get errors in oe-buildenv-internal, we should stop the script
> and shouldn't further run.
> 
> Signed-off-by: Dexuan Cui <dexuan.cui at intel.com>

Merged to master, thanks.

Richard