Improvements to tools/gn.py

Improvements to tools/gn.py

This change enables gn.py to take comma separated lists of modes,
architectures, and os's similar to build.py. It also accepts 'all'
for each of these just like build.py. GN is invoked in parallel to
save time.

This change also adds an option --gn to build.py to invoke ninja
instead of the usual build system.

Will investigate invoking tools/gn.py automagically from build.py in
a future change.

R=johnmccutchan@google.com

Committed: https://github.com/dart-lang/sdk/commit/eabd4ed9fbf0ea1e2a69b38adb1daa32a435d993

[zra, 2016-10-04 22:47:33]

Description was changed from

==========
Improvements to tools/gn.py

This change enables gn.py to take comma separated lists of modes,
architectures, and os's similar to build.py. It also accepts 'all'
for each of these just like build.py. GN is invoked in parallel to
save time.

This change also adds an option to build.py to invoke ninja instead of
the usual build system.
==========

to

==========
Improvements to tools/gn.py

This change enables gn.py to take comma separated lists of modes,
architectures, and os's similar to build.py. It also accepts 'all'
for each of these just like build.py. GN is invoked in parallel to
save time.

This change also adds an option --gn to build.py to invoke ninja
instead of the usual build system.

Will investigate invoking tools/gn.py automagically from build.py in
a future change.
==========

[zra, 2016-10-04 22:48:06]

zra@google.com changed reviewers:
+ johnmccutchan@google.com

[Cutch, 2016-10-04 23:07:44]

lgtm

[zra, 2016-10-05 02:49:17]

Description was changed from

==========
Improvements to tools/gn.py

This change enables gn.py to take comma separated lists of modes,
architectures, and os's similar to build.py. It also accepts 'all'
for each of these just like build.py. GN is invoked in parallel to
save time.

This change also adds an option --gn to build.py to invoke ninja
instead of the usual build system.

Will investigate invoking tools/gn.py automagically from build.py in
a future change.
==========

to

==========
Improvements to tools/gn.py

This change enables gn.py to take comma separated lists of modes,
architectures, and os's similar to build.py. It also accepts 'all'
for each of these just like build.py. GN is invoked in parallel to
save time.

This change also adds an option --gn to build.py to invoke ninja
instead of the usual build system.

Will investigate invoking tools/gn.py automagically from build.py in
a future change.

R=johnmccutchan@google.com

Committed:
https://github.com/dart-lang/sdk/commit/eabd4ed9fbf0ea1e2a69b38adb1daa32a435d993
==========

[zra, 2016-10-05 02:49:18]

Committed patchset #4 (id:60001) manually as
eabd4ed9fbf0ea1e2a69b38adb1daa32a435d993 (presubmit successful).