Various fixes for 32-bit Linux GN builds that need to be tracked down.

Various fixes for 32-bit Linux GN builds that need to be tracked down.

1) 64-bit gold linking doesn't work right
2) We need to compile d8 with the 32-bit clang toolchain to run
   the js browser tests
3) parts of mojo depend on cython which depends on the python sdks
   being present in the sysroot
4) we get errors trying to build the installer

R=brettw@chromium.org, mcgrathr@chromium.org
BUG=

Committed: https://crrev.com/e0f6a916e895a301edbf408b77068caa963cce31
Cr-Commit-Position: refs/heads/master@{#350243}

[Roland McGrath, 2015-09-21 23:59:07]

https://codereview.chromium.org/1359513002/diff/40001/build/config/compiler/B...
File build/config/compiler/BUILD.gn (right):

https://codereview.chromium.org/1359513002/diff/40001/build/config/compiler/B...
build/config/compiler/BUILD.gn:50: use_gold = is_linux && current_cpu == "x64"
I investigated the gold crash a bit.  It still happens with upstream trunk of
gold.  I posted on binutils@sourceware.org about the details.
You can work around it by dropping the --icf=all flag.

https://codereview.chromium.org/1359513002/diff/40001/chrome/test/base/js2gte...
File chrome/test/base/js2gtest.gni (right):

https://codereview.chromium.org/1359513002/diff/40001/chrome/test/base/js2gte...
chrome/test/base/js2gtest.gni:6: import("//v8/snapshot_toolchain.gni")
I can't find snapshot_toolchain.gni.  Is it in another CL?

[Dirk Pranke, 2015-09-22 01:11:44]

On 2015/09/21 23:59:07, Roland McGrath wrote:
>
https://codereview.chromium.org/1359513002/diff/40001/build/config/compiler/B...
> File build/config/compiler/BUILD.gn (right):
> 
>
https://codereview.chromium.org/1359513002/diff/40001/build/config/compiler/B...
> build/config/compiler/BUILD.gn:50: use_gold = is_linux && current_cpu == "x64"
> I investigated the gold crash a bit.  It still happens with upstream trunk of
> gold.  I posted on mailto:binutils@sourceware.org about the details.
> You can work around it by dropping the --icf=all flag.
> 
>
https://codereview.chromium.org/1359513002/diff/40001/chrome/test/base/js2gte...
> File chrome/test/base/js2gtest.gni (right):
> 
>
https://codereview.chromium.org/1359513002/diff/40001/chrome/test/base/js2gte...
> chrome/test/base/js2gtest.gni:6: import("//v8/snapshot_toolchain.gni")
> I can't find snapshot_toolchain.gni.  Is it in another CL?

Yup, sorry:

https://codereview.chromium.org/1350223004/

which needs to land first.

[brettw, 2015-09-22 05:07:50]

lgtm

[Dirk Pranke, 2015-09-22 21:16:01]

The CQ bit was checked by dpranke@chromium.org

[commit-bot: I haz the power, 2015-09-22 21:17:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359513002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359513002/40001

[commit-bot: I haz the power, 2015-09-22 21:50:39]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-09-22 22:09:29]

Patchset 3 (id:??) landed as
https://crrev.com/e0f6a916e895a301edbf408b77068caa963cce31
Cr-Commit-Position: refs/heads/master@{#350243}