GN: support compiler_prefix, use it for ccache on bots.

GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

If you have ccache, you can just always leave compiler_prefix="ccache" enabled.
This should make it an unusual thing for humans to have to change cc or cxx.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002

Committed: https://skia.googlesource.com/skia/+/cab0bb7fc694a59de379befb6062f48fdd1b731c

[mtklein_C, 2016-08-26 19:03:21]

Description was changed from

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"

and we'll use the NDK clang, wrapped with ccache.

(If you have ccache, you can just always leave compiler_prefix="ccache"
enabled.)
==========

to

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"

and we'll use the NDK clang, wrapped with ccache.

(If you have ccache, you can just always leave compiler_prefix="ccache"
enabled.)
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

[mtklein_C, 2016-08-26 19:04:53]

Description was changed from

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"

and we'll use the NDK clang, wrapped with ccache.

(If you have ccache, you can just always leave compiler_prefix="ccache"
enabled.)
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

to

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

(If you have ccache, you can just always leave compiler_prefix="ccache"
enabled.)
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

[mtklein_C, 2016-08-26 19:04:58]

The CQ bit was checked by mtklein@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-26 19:05:00]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[mtklein_C, 2016-08-26 19:08:17]

Description was changed from

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

(If you have ccache, you can just always leave compiler_prefix="ccache"
enabled.)
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

to

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

If you have ccache, you can just always leave compiler_prefix="ccache" enabled.
This should make it an unusual thing for humans to have to change cc or cxx.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

[mtklein_C, 2016-08-26 19:10:02]

mtklein@chromium.org changed reviewers:
+ jcgregorio@google.com

[jcgregorio, 2016-08-26 19:14:58]

lgtm

[commit-bot: I haz the power, 2016-08-26 19:32:35]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-08-26 19:32:35]

Dry run: This issue passed the CQ dry run.

[mtklein, 2016-08-26 20:42:14]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2016-08-26 20:42:21]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-26 20:43:22]

Description was changed from

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

If you have ccache, you can just always leave compiler_prefix="ccache" enabled.
This should make it an unusual thing for humans to have to change cc or cxx.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002
==========

to

==========
GN: support compiler_prefix, use it for ccache on bots.

This makes it considerably easier to use ccache with the Android NDK.
You can now just set
  compiler_prefix = "ccache"
  ndk = "/path/to/ndk"
and we'll use the NDK clang, wrapped with ccache.

The name compiler_prefix is stolen from / compatible with Chrome.

If you have ccache, you can just always leave compiler_prefix="ccache" enabled.
This should make it an unusual thing for humans to have to change cc or cxx.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2281163002

Committed:
https://skia.googlesource.com/skia/+/cab0bb7fc694a59de379befb6062f48fdd1b731c
==========

[commit-bot: I haz the power, 2016-08-26 20:43:23]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/cab0bb7fc694a59de379befb6062f48fdd1b731c