By default it emulates your installed cl.exe, but the bots don't have
one. I think the fallback is 2013, which causes all sorts of pre-C++11
problems.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Win-Clang-x86_64-Release
Change-Id: I2556abe68825e58762b4172d067ba6826de5c133
Reviewed-on: https://skia-review.googlesource.com/29021
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This should shut up any warnings in the win toolchain headers?
Change-Id: I7d17bf6d63d56e66afffa557d0ed06bc3994200d
Reviewed-on: https://skia-review.googlesource.com/28981
Reviewed-by: Ben Wagner <bungeman@google.com>
1) Run python bin/fetch-clang-win
2) Set clang_win = "../bin/clang_win"
3) ???
4) Profit
Most changes here are to pass the right -mfoo flags to Clang
to enable advanced instruction sets, or fixed warning-as-errors.
BUG=skia:2679
Change-Id: Ieed145d35c209131c7c16fdd3ee11a3de4a1a921
Reviewed-on: https://skia-review.googlesource.com/28740
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This is mainly for getting ready to start adding lots of metal backend code.
I've also update the "gpu tools" target to require ARC with involved updating
one IOS file in there.
Bug: skia:
Change-Id: Ied22e8fe7532445cc274efb529e3450654a6614b
Reviewed-on: https://skia-review.googlesource.com/22484
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
This reverts commit c070939fd1.
Reason for revert:
This has some knock-on effects in the generation of Android.bp from our GN files. See gn/gn_to_bp.py? We're seeing things like "tmp/tmpsBVycx/gen/" end up in the include search path in Android.bp, which obviously don't exist there...
Original change's description:
> Re-land sksl fragment processor support
>
> This reverts commit ed50200682.
>
> Bug: skia:
> Change-Id: I9caa7454b391450620d6989dc472abb3cf7a2cab
> Reviewed-on: https://skia-review.googlesource.com/20965
> Reviewed-by: Ben Wagner <benjaminwagner@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
TBR=benjaminwagner@google.com,ethannicholas@google.com
Change-Id: I502486b5405923b322429219f4cc396a45a14cea
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/20990
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Bug: 6672
Change-Id: Ia6c6bae8a9adfd75172d7116487dfa63c3d69670
Reviewed-on: https://skia-review.googlesource.com/20904
Commit-Queue: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Reviewed-by: Eric Boren <borenet@google.com>
Bug: skia:
Change-Id: Ia3b0305c2b0c78074303831f628fb01852b90d34
Reviewed-on: https://skia-review.googlesource.com/17843
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Oddly, the MSVC toolchain already says "assemble ...".
Change-Id: Iabf06afa1b7c05b5699a26813f1469346be439a5
Reviewed-on: https://skia-review.googlesource.com/14367
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Chrome's got threadsafe statics, Android too, Flutter too, and heck, we even have them on all our Windows builds. No one responded to my mail about them. Let's stop turning them off on not-Windows!
Change-Id: Iadf00336aa73df3f694ac019c9d54a3f2257a3bd
Reviewed-on: https://skia-review.googlesource.com/11683
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
I set -mdspr2 unconditionally on 32-bit MIPS builds only to not have to
deal with setting it conditionally on the source files specifically
requiring those instructions.
Since then, I've deleted all the source files specifically requiring
-mdspr2 (and -mdsp). No one understood them and they were only
accelerating really uninteresting cases, like 565 blits.
So, we haven't needed -mdspr2 anywhere for a while, and removing it
will unblock running these builds on the CI20 dev boards, which
support neither -mdsp nor -mdsp2.
BUG=skia:1437
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Ubuntu-Clang-mipsel-Debug-Android,Build-Ubuntu-Clang-mipsel-Release-Android
Change-Id: Idda56fd8bb37ba064b78b4cddd8878b37dfe9502
Reviewed-on: https://skia-review.googlesource.com/11284
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
I think this is the root of my Windows / Chrome problems.
Even on 32-bit builds, Chrome compiles nacl64.exe in 64-bit mode.
So to make things simple, always put _win.S in the sources,
and no-op it away when assembling for 32-bit.
Change-Id: I19f163491739a6c0cbdedd0ce353f1d2289907ae
Reviewed-on: https://skia-review.googlesource.com/10637
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This makes it easier to cross-compile for non-Android ARM (e.g. Raspberry PI)
Bug: skia:
Change-Id: I4414d933bc38d56009aefcbe10e68f7c70964d9c
Reviewed-on: https://skia-review.googlesource.com/10291
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This makes things like dladdr and backtrace_symbols not totally useless on Linux.
Change-Id: I26666a76c5b50fbf88aaf9709c869de0a697bb02
Reviewed-on: https://skia-review.googlesource.com/10176
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Change-Id: Icb333d34705c86f6204a5265b645a2a215e60ad6
Reviewed-on: https://skia-review.googlesource.com/9624
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This change is just to add support for building for tvOS.
It is exactly the same as iOS, just using a different SDK.
I had to change the two lines for libjpeg-turbo so that
it will run for both tvOS and iOS.
BUG=skia:
Change-Id: I6ae5fc4257df74c0f321e5d2d71584f6a52ec3a6
Reviewed-on: https://skia-review.googlesource.com/9660
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This builds fine on my laptop, but fails to link on the bots,
so I'm leaving out a new Build bot for now.
BUG=skia:6329
Change-Id: I4b33770f13ab9dec914d090b45d9921b19ee2c9d
Reviewed-on: https://skia-review.googlesource.com/9519
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Get toolchain from https://goto.google.com/ncoqy and put in
$CAST_TOOLCHAIN
gn gen out/chromecast --args='cc="$CAST_TOOLCHAIN/armv7a/bin/armv7a-cros-linux-gnueabi-gcc" cxx="$CAST_TOOLCHAIN/armv7a/bin/armv7a-cros-linux-gnueabi-g++" ar="$CAST_TOOLCHAIN/armv7a/bin/armv7a-cros-linux-gnueabi-ar" is_official_build=true skia_use_fontconfig=false extra_ldflags=["-static-libstdc++","-static-libgcc"] target_cpu="arm" skia_enable_gpu=false skia_use_system_freetype2=false'
ninja -C out/chromecast nanobench
We go with is_official_build to minimize binary size, as the chromecast
does not have much onboard storage.
They do not package libstdc++ so we add the link options:
-static-libstdc++ -static-libgcc
-momit-leaf-frame-pointer is not supported, so we delete it, as it is not important.
BUG=skia:
Change-Id: I7b0882ab5d6109f07345a2d59df265efef9b9554
Reviewed-on: https://skia-review.googlesource.com/9338
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
simpleperf has moved a little since r13. To support both, remove its
copy step.
Explicitly disable the Clang integrated assembler on MIPS. It has only
understood the 'usw' (unaligned store) pseudoinstruction for about 4
months, and that won't be part of a Clang release until the upcoming
Clang 4.0. Must be that -no-integrated-as was the default in r13.
All six platforms build on my laptop with r14 now.
Will follow up with the CL that moves the bots to r14.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Mac-Clang-arm64-Debug-Android,Build-Ubuntu-Clang-arm-Debug-Android,Build-Ubuntu-Clang-arm64-Debug-Android,Build-Ubuntu-Clang-mips64el-Debug-Android,Build-Ubuntu-Clang-mipsel-Debug-Android,Build-Ubuntu-Clang-x64-Debug-Android,Build-Ubuntu-Clang-x86-Debug-Android,Build-Win-Clang-arm64-Release-Android
Change-Id: Ic00981d534613ebab8f6e7646b967493728b91d9
Reviewed-on: https://skia-review.googlesource.com/9237
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
- Compile stages with -DWIN to pick up MS-specific start_pipeline().
- Add SkJumper_generated_win.S with MS-specific assembly.
- Add a minimal asm tool to our GN Windows toolchain.
The SkRasterPipeline_f16 benchmark run ~4x faster on my desktop.
Change-Id: Ia45afb4ecb6a055e2c0e43f0f54f59e081c23b7f
Reviewed-on: https://skia-review.googlesource.com/8778
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
It's probably best we build iOS assembly with the iOS SDK and the right
architecture settings in Clang...
Change-Id: I68119641b1f86267ca85434b5a7f6ed37838ce23
Reviewed-on: https://skia-review.googlesource.com/8680
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Today we do this only on Windows (/OPT:REF).
This extends to Mac-likes (-dead_strip) and non-Macs
(-ffunction-sections, -fdata-sections, -Wl,--gc-sections).
Should be no harm passing -ffunction-sections and -fdata-sections on Mac too.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Ubuntu-Clang-x86_64-Release-Mini
Change-Id: I3a1b41be1d258ff509b0355215cb25dab47db57b
Reviewed-on: https://skia-review.googlesource.com/8307
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
The weird foo_mains are no longer needed when we build with GN.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Mac-Clang-arm-Debug-iOS
Change-Id: Iae50696741e0dc277d96dda4968a1ae41cb17c8a
Reviewed-on: https://skia-review.googlesource.com/8064
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Stephan Altmueller <stephana@google.com>
Just like DM.
CQ_INCLUDE_TRYBOTS=skia.primary:Test-iOS-Clang-iPadMini4-GPU-GX6450-Arm7-Debug,Build-Mac-Clang-arm64-Debug-GN_iOS
Change-Id: I4af3fa1813e3b7ee48407096e91373b5fee569c7
Reviewed-on: https://skia-review.googlesource.com/7824
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This is enough to run DM on my iPad.
I've tweaks DM so that it can run as built by both GN and GYP.
When we kill off GYP, all the dm_main() nonsense goes away.
CQ_INCLUDE_TRYBOTS=skia.primary:Test-iOS-Clang-iPadMini4-GPU-GX6450-Arm7-Debug,Build-Mac-Clang-arm64-Debug-GN_iOS
Change-Id: I59176bc203ee3180618b94ac5f9d291e0ad20b62
Reviewed-on: https://skia-review.googlesource.com/7757
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Hal Canary <halcanary@google.com>
And roll recipes to the point where they pass target_cpu to GN,
adding x86_64 as an alias for x64.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Mac-Clang-arm64-Debug-GN_iOS,Build-Mac-Clang-arm64-Release-GN_iOS,Build-Mac-Clang-arm-Debug-GN_iOS,Build-Mac-Clang-arm-Release-GN_iOS
Change-Id: I1933d5803ec7f59f78576c5a7b16489362905a97
Reviewed-on: https://skia-review.googlesource.com/7403
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This reverts commit 58ce2bc51a.
Reason for revert: warnings / errors when building ANGLE.
Original change's description:
> Try /MTd on Debug Windows builds.
>
> The people clamor for it! I doubt we'll care in our testing.
>
> BUG=skia:5928
>
> Change-Id: I80d3948fd1f5d0b956c308bc3a6183b8660575ae
> Reviewed-on: https://skia-review.googlesource.com/7364
> Commit-Queue: Mike Klein <mtklein@chromium.org>
> Commit-Queue: Ben Wagner <bungeman@google.com>
> Reviewed-by: Ben Wagner <bungeman@google.com>
>
TBR=mtklein@chromium.org,bungeman@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5928
Change-Id: Id6ab3de7ebb5394749233429bada2f5244ff2978
Reviewed-on: https://skia-review.googlesource.com/7372
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
The people clamor for it! I doubt we'll care in our testing.
BUG=skia:5928
Change-Id: I80d3948fd1f5d0b956c308bc3a6183b8660575ae
Reviewed-on: https://skia-review.googlesource.com/7364
Commit-Queue: Mike Klein <mtklein@chromium.org>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Also add ANGLE ES3 predefined configs.
BUG=skia:
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Debug-ANGLE
Change-Id: Ib7394afa961da1afe91c6dfefe08528273d3087c
Reviewed-on: https://skia-review.googlesource.com/6698
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Recent versions of ANGLE require this. See:
https://skia-review.googlesource.com/c/6698/
This also updates us to the latest version of the Windows SDK,
2015 Update 3 (Windows 10 SDK).
BUG=skia:
CQ_INCLUDE_TRYBOTS=skia.primary:Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Debug-GDI,Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan,Test-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release
Change-Id: I42c8cabc87717f8695763f2c5573b27ab8ab65be
Reviewed-on: https://skia-review.googlesource.com/6801
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Full error text:
error: enums in the Microsoft ABI are signed integers by default;
consider giving the enum Properties an unsigned underlying type
to make this code portable [-Werror,-Wsigned-enum-bitfield]
BUG=skia:
Change-Id: I1491dd94c894e383fed401880fc04562140f7a66
Reviewed-on: https://skia-review.googlesource.com/6594
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Matt Sarett <msarett@google.com>
This sets the source and executable character set to utf-8. This avoids
issues with local code pages and avoids adding an unwanted BOM.
Change-Id: If854c0001c2363f3262d20e28dce30c1e733536a
Reviewed-on: https://skia-review.googlesource.com/6547
Commit-Queue: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This makes it possible to target NDK API 18 (K) again.
Change-Id: Id3d1f19b2904792b4001d2ea0942cc1ab6cf732e
Reviewed-on: https://skia-review.googlesource.com/6081
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
The more I look at std::unordered_map and co., the less I like them.
I think we might want to bet on SkTHash*.
As a simple first improvement, add move support.
Next comes shrinking, and then I'll start moving over SkTDynamicHash users.
BUG=skia:6053
Change-Id: Ifdb5d713aab66434ca271c7f18a0cbbb0720099c
Reviewed-on: https://skia-review.googlesource.com/5943
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
The new GN doesn't like "ar = ar + ...", etc.
CQ_INCLUDE_TRYBOTS=skia.primary:Build-Win-Clang-arm64-Release-Android
Change-Id: Ib131ee367c4af144f8ffb8562fc26b67675e4f45
Reviewed-on: https://skia-review.googlesource.com/5726
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
gn gen --args='malloc="tcmalloc"'
gn gen --args='malloc="jemalloc"'
or if the library is in a non-standard directory
gn gen --args='malloc="tcmalloc" extra_ldflags="-L<path-to-library>"'
Change-Id: Icacd837d11392a1971f298ccddd69a5a6781f6cf
Reviewed-on: https://skia-review.googlesource.com/5629
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
These .o are only appropriate for linking executables; others would be used if we link an .so.
-B turns out to be the flag we really wanted here anyway, adding that directory to the search path for all these .o files, letting Clang pick the right one. The existing comment is now correct for both the lib_dirs and ldflags +=.
Change-Id: I66d9aada12477756142726828cf66c142ca76a48
Reviewed-on: https://skia-review.googlesource.com/5657
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This reverts commit cab79aadad.
Reason for revert: Bots crashing.
Original change's description:
> Use /MD for Windows builds.
>
> I think the default is /MT, static linking.
> This should make our builds smaller, and compatible with clients using /MD.
>
> Change-Id: Id8a39a029925eda2627532bbd0223c693300f5da
> Reviewed-on: https://skia-review.googlesource.com/5277
> Reviewed-by: Ben Wagner <bungeman@google.com>
> Commit-Queue: Mike Klein <mtklein@chromium.org>
>
TBR=mtklein@chromium.org,bungeman@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: Iff644250a23175e44a4282e7aaea0e2a2adc1ce0
Reviewed-on: https://skia-review.googlesource.com/5310
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
I think the default is /MT, static linking.
This should make our builds smaller, and compatible with clients using /MD.
Change-Id: Id8a39a029925eda2627532bbd0223c693300f5da
Reviewed-on: https://skia-review.googlesource.com/5277
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This reverts commit c89e2438ae.
Reason for revert:
I'm going to stub this code out in Chrome instead for now. Chrome's not going to land something that looks like this, so I'd rather undo it than leave Skia in this odd state.
Original change's description:
> Turn off /arch:AVX[2] on Windows builds.
>
> This canaries a similar change Chrome may need.
>
> BUG=chromium:666707
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=5005
>
> Change-Id: Ibf7f9941968d905d865b9be1e63ebbf768870175
> Reviewed-on: https://skia-review.googlesource.com/5005
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> Commit-Queue: Mike Klein <mtklein@chromium.org>
>
TBR=mtklein@chromium.org,brucedawson@chromium.org,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I9562f7877749c61f6ba4d48d6c4b557f09876128
Reviewed-on: https://skia-review.googlesource.com/5069
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This canaries a similar change Chrome may need.
BUG=chromium:666707
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=5005
Change-Id: Ibf7f9941968d905d865b9be1e63ebbf768870175
Reviewed-on: https://skia-review.googlesource.com/5005
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
We already generate skia.h to include all public headers for Fiddle.
This just includes it with -Wunused-parameter turned on as an error.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4901
Change-Id: Ia55a901c09a3c9c9d6d35a43259431dba3532ed9
Reviewed-on: https://skia-review.googlesource.com/4901
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Running is_clang.py is the current long-poll in `gn gen` time.
We can avoid it trivially in a few situations:
- We always use Clang on Android, iOS, and Mac.
- If cc and cxx are clang and clang++, it's Clang.
This cuts `gn gen` time from 80ms to 20ms on my laptop.
(Did you know gn has a --tracelog=trace.log option for creating Chrome-tracing-compatible traces? Pretty neat.)
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4746
Change-Id: Ic81d221675e8309cc9942bb9e62243d86658b02d
Reviewed-on: https://skia-review.googlesource.com/4746
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Ben Wagner <bungeman@google.com>
This gets up a bot to build for iOS via GN as much as we can right now. This is unlikely to be the long term structure of the iOS bots... by the time we add Test/Perf bots we'll likely need to have a gn_ios_flavor.py. But for now, this keeps the GN iOS build such as it is working.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4457
Change-Id: Ideb10ae3f4ab5530ad153237a343dd5c0e7dd02f
Reviewed-on: https://skia-review.googlesource.com/4457
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Eric Boren <borenet@google.com>
When building on Mac you see lots of spam about object files with no symbols when linking libskia.a. This filters them out.
We have to do this in a Python script anyway, so I've consolidated into the existing gn/ar.py.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4447
Change-Id: I9b18051ba687ec1fcf464a87a8a5929d29c70f24
Reviewed-on: https://skia-review.googlesource.com/4447
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
