Switch STL implementation for iOS from libc++ to libstdc++

Switch STL implementation for iOS from libc++ to libstdc++

This change applies to iOS builds only. The use_system_libcxx flag is set to use libstdc++.

BUG=459012

[pkl (ping after 24h if needed), 2015-03-18 18:13:15]

pkl@chromium.org changed reviewers:
+ sdefresne@chromium.org

[sdefresne, 2015-03-19 08:10:34]

lgtm

[sdefresne, 2015-03-19 08:11:05]

Can you edit the description and make it clear that this only affect iOS builds
before landing?

[pkl (ping after 24h if needed), 2015-03-19 09:04:03]

On 2015/03/19 08:11:05, sdefresne wrote:
> Can you edit the description and make it clear that this only affect iOS
builds
> before landing?

Updated. Thanks!

[sdefresne, 2015-03-19 09:06:41]

Still lgtm.

[pkl (ping after 24h if needed), 2015-03-19 09:11:28]

pkl@chromium.org changed reviewers:
+ jochen@chromium.org

[pkl (ping after 24h if needed), 2015-03-19 09:11:28]

+jochen for OWNERS approval. Thanks!

[jochen (gone - plz use gerrit), 2015-03-19 10:25:27]

why does it need a landmine?

[pkl (ping after 24h if needed), 2015-03-19 10:33:54]

On 2015/03/19 10:25:27, jochen (slow) wrote:
> why does it need a landmine?

Without the landmine, the wrong libraries will be linked. We know what the
problem is, see http://crbug/459197.

[pkl (ping after 24h if needed), 2015-03-20 10:31:57]

jochen: friendly ping.

[jochen (gone - plz use gerrit), 2015-03-20 14:47:18]

jochen@chromium.org changed reviewers:
+ thakis@chromium.org

[jochen (gone - plz use gerrit), 2015-03-20 14:47:18]

+thakis

usually, we try to avoid landmines. How difficult will it be to fix the
dependency checker instead?

[pkl (ping after 24h if needed), 2015-03-23 10:18:26]

On 2015/03/20 14:47:18, jochen (slow) wrote:
> +thakis
> 
> usually, we try to avoid landmines. How difficult will it be to fix the
> dependency checker instead?

The landmine added by this CL affects iOS builds only. Due to crbug/469223, I
would like to switch iOS builds back to libstdc++ asap and would rather not wait
for crbug/459197 to be fixed.

The crbug referenced above has been opened for 1+ month but is only affecting
iOS builds.
Just pinged bug owner on that bug for status update.

[jochen (gone - plz use gerrit), 2015-03-23 10:23:08]

the thing is that this will likely tank the cycle time of ios builders for the
CQ. In the worst case, this will destroy the CQ for everybody.

[Nico, 2015-03-23 18:20:08]

On 2015/03/23 10:18:26, pklpkl wrote:
> On 2015/03/20 14:47:18, jochen (slow) wrote:
> > +thakis
> > 
> > usually, we try to avoid landmines. How difficult will it be to fix the
> > dependency checker instead?
> 
> The landmine added by this CL affects iOS builds only. Due to crbug/469223, I
> would like to switch iOS builds back to libstdc++ asap and would rather not
wait
> for crbug/459197 to be fixed.

You could fix it yourself :-)

[sdefresne, 2015-06-08 16:25:01]

On 2015/03/23 18:20:08, Nico wrote:
> On 2015/03/23 10:18:26, pklpkl wrote:
> > On 2015/03/20 14:47:18, jochen (slow) wrote:
> > > +thakis
> > > 
> > > usually, we try to avoid landmines. How difficult will it be to fix the
> > > dependency checker instead?
> > 
> > The landmine added by this CL affects iOS builds only. Due to crbug/469223,
I
> > would like to switch iOS builds back to libstdc++ asap and would rather not
> wait
> > for crbug/459197 to be fixed.
> 
> You could fix it yourself :-)

Can this CL be closed?