Not checking Windows, where the set of linker outputs is not constant.
Change-Id: I1241aa4108f7feebc2638ca762743464fcb48a52
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/201165
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
* Migrate to python3; drop python support.
* Update Windows toolchain support.
* Remove some unused methods.
* Python 2.7 is still needed on Windows.
* Update gsutil to a version that supports python3.
Fixes: https://github.com/dart-lang/sdk/issues/28793
TEST=Manually tested common user journeys.
Change-Id: I663a22b237a548bb82dc2e601e399e3bc3649211
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192182
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
It is very tricky to make scripts using the python multiprocessing
package terminate cleanly on SIGINT (ctrl-c).
Use subprocesses run in parallel instead for the simple uses
in these scripts.
This is necessary when running build.py from within another script,
so that it terminates cleanly when the process group receives
a broadcast SIGINT.
Change-Id: Ifc858225a49f369c4bd9cee62639ac6fc8ff737e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/171120
Commit-Queue: William Hesse <whesse@google.com>
Reviewed-by: Jonas Termansen <sortie@google.com>
The workflow of using tools/gn.py followed-by tools/build.py is no
longer working as it used to (the latter will override whatever the
former configured).
Instead one should pick between:
tools/gn.py & ninja
tools/build.py
=> Both tools/gn.py and tools/build.py suport the same options.
This CL also makes tools/build.py stop using tools/generate_buildfiles.py (which
would get just overriden by the re-run of GN).
Change-Id: Ie698d7395e8c5862ae04a479c7c820c76ac5565d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154323
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: William Hesse <whesse@google.com>
Also adds a '-nvh' short-hand for '--no-verify-sdk-hash'
Change-Id: If893953e592128a8fa0b2f2e5720748d4b9b76aa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/153770
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Jonas Termansen <sortie@google.com>
Move the nnbd core libraries from sdk_nnbd to sdk, and updates
references in build files and elsewhere accordingly.
Change-Id: I09760fe1e006657aacdfe80f3b22fdf6f7e30a9f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151121
Commit-Queue: Leaf Petersen <leafp@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
This reverts commit 4ce18ab931.
Reason for revert: bad merge, caused build breakages in flutter/engine
Original change's description:
> Add an --os=fuchsia option to build.py:
>
> tools/build.py --os=fuchsia runtime create_sdk
>
> This is analogous to --os=android. It cross compiles from Linux x64 to
> Fuchsia.
>
> A lot of the build rules are just slightly different between the existing
> Fuchsia build rules used by Flutter, and the ones added by GN SDK. For
> example "$fuchsia_sdk_root/pkg:fdio" is now "$fuchsia_sdk_root/pkg/fdio".
> So to support this I had to add a new variable, using_fuchsia_gn_sdk,
> analogous to using_fuchsia_sdk. Flutter will need to set this to false.
>
> Change-Id: Ief275d65f30a42a801607de93cf2d27a1fe825dd
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150689
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Liam Appelbe <liama@google.com>
TBR=rmacnak@google.com,asiva@google.com,liama@google.com,kaushikiska@google.com,matthewcarroll@google.com
Change-Id: If01ee34eba906c55f2d56ba650748a86e81e701c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151321
Auto-Submit: George Wright <wrightgeorge@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
tools/build.py --os=fuchsia runtime create_sdk
This is analogous to --os=android. It cross compiles from Linux x64 to
Fuchsia.
A lot of the build rules are just slightly different between the existing
Fuchsia build rules used by Flutter, and the ones added by GN SDK. For
example "$fuchsia_sdk_root/pkg:fdio" is now "$fuchsia_sdk_root/pkg/fdio".
So to support this I had to add a new variable, using_fuchsia_gn_sdk,
analogous to using_fuchsia_sdk. Flutter will need to set this to false.
Change-Id: Ief275d65f30a42a801607de93cf2d27a1fe825dd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150689
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
- Flips the flag from --nnbd to --no-nnbd so that by default it builds
the NNBD version
- using the --no-nnbd flag results in the SDK being built in a
directory which has the 'Legacy' suffix added to it
(e.g: out/DebugX64Legacy)
- the '--enable-experiment=non-nullable' flag still needs to be passed
in during execution so that CFE runs in that mode. This is different
from the 'null_safety' flag
Change-Id: I729630a7bd36ea7ae38134f9285b44e93c283c68
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138902
Reviewed-by: Paul Berry <paulberry@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
This reverts commit cab69e7706.
Reason for revert: It was a temporary submit
Original change's description:
> [BUILD] - Initial CL to unfork the NNBD Dart SDK
> NOTE: This is a trial submit and will be reverted immediately.
>
> - Flips the flag from --nnbd to --no-nnbd so that by default it builds
> the NNBD version
> - using the --no-nnbd flag results in the SDK being built in a
> directory which has the 'Legacy' suffix added to it
> (e.g: out/DebugX64Legacy)
> - the '--enable-experiment=non-nullable' flag still needs to be passed
> in during execution so that CFE runs in that mode. This is different
> from the 'null_safety' flag
>
> Change-Id: I7d25d9710818af5919c0bb83abe51153172f5886
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144880
> Reviewed-by: Siva Annamalai <asiva@google.com>
TBR=asiva@google.com
Change-Id: Ib0f99fc1a42c9c7a8b21f8542f4a35dba9105d5c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144900
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
NOTE: This is a trial submit and will be reverted immediately.
- Flips the flag from --nnbd to --no-nnbd so that by default it builds
the NNBD version
- using the --no-nnbd flag results in the SDK being built in a
directory which has the 'Legacy' suffix added to it
(e.g: out/DebugX64Legacy)
- the '--enable-experiment=non-nullable' flag still needs to be passed
in during execution so that CFE runs in that mode. This is different
from the 'null_safety' flag
Change-Id: I7d25d9710818af5919c0bb83abe51153172f5886
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144880
Reviewed-by: Siva Annamalai <asiva@google.com>
This reverts commit 393468dc89.
Reason for revert: This was a trial submit and so reverting it.
Original change's description:
> This is a trial submit of the unfork CL, it will be reverted immediately.
> This commit is being done so we can roll it into Flutter and run some device lab testing to see the effect this CL will have on Flutter.
>
> [BUILD] - Initial CL to unfork the NNBD Dart SDK
>
> - Flips the flag from --nnbd to --no-nnbd so that by default it builds
> the NNBD version
> - using the --no-nnbd flag results in the SDK being built in a
> directory which has the 'Legacy' suffix added to it
> (e.g: out/DebugX64Legacy)
> - the '--enable-experiment=non-nullable' flag still needs to be passed
> in during execution so that CFE runs in that mode. This is different
> from the 'null_safety' flag
>
> Change-Id: I83c813aee2a5b61ad876d8a7b0988705bb24c839
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144082
> Reviewed-by: Siva Annamalai <asiva@google.com>
TBR=asiva@google.com,liama@google.com
Change-Id: I7b50fae71764eceb17893338d1981e40ea2de520
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144083
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
This commit is being done so we can roll it into Flutter and run some device lab testing to see the effect this CL will have on Flutter.
[BUILD] - Initial CL to unfork the NNBD Dart SDK
- Flips the flag from --nnbd to --no-nnbd so that by default it builds
the NNBD version
- using the --no-nnbd flag results in the SDK being built in a
directory which has the 'Legacy' suffix added to it
(e.g: out/DebugX64Legacy)
- the '--enable-experiment=non-nullable' flag still needs to be passed
in during execution so that CFE runs in that mode. This is different
from the 'null_safety' flag
Change-Id: I83c813aee2a5b61ad876d8a7b0988705bb24c839
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144082
Reviewed-by: Siva Annamalai <asiva@google.com>
Running tools/test.py locally behaves differently than on the bots
because the bots will have special environment variables set.
=> We want also local runs of tools/test.py to report ASAN errors, so
this CL moves the setting of environment variables to tools/test.py
Furthermore we enable "additional check_initialization_order=true" asan
option to detect ordering issues when initializing global state.
Make the IsolateGroup::isolate_group_random_ heap allocated on VM
startup to avoid initialization ordering issue (turns out our `Random`
can depend on embedder entropy source callback being available)
Also add locking around assigning of isolate group ids -- without it we
could have two threads racing and possibly getting the same id.
See b/149978682
Change-Id: I41b9a34c66934dcc0d3804233f5acf09004ba3bd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/136630
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
This allows us to do both:
tools/build.py -a ia32
and
tools/build.py -a IA32,ARMx64,x64
Also fixes missing arch option in utils.py.
Change-Id: I6f911397dbf52437f5347d41d71cdd3254a29476
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134700
Reviewed-by: Teagan Strickland <sstrickl@google.com>
Commit-Queue: Clement Skau <cskau@google.com>
Auto-Submit: Clement Skau <cskau@google.com>
We introduce a new architecture ARM_X64, which is the same as ARM except that
the host-targeting-host binaries are compiled for X64 instead of X86.
Issue https://github.com/dart-lang/sdk/issues/38709
Change-Id: I00a2b1cc71948adec9f66c7b2ee61e9e5ac53d2a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120121
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
This treats whether or not to use the forked NNBD SDK as a build flag
similar to mode or architecture. When this flag is passed, it appends
"NNBD" to the main output directory, like xcodebuild/ReleaseX64NNBD.
It also defines a "use_nnbd" flag that is available inside BUILD.gn
files to determine whether or not to use the forked SDK. This flag
currently isn't used. Implementation teams will need to edit their
build steps to take that into account.
In order to use this mode on the bots, we'll need to tweak the bot
scripts to figure out whether the mode is enabled or not. There are a
couple of TODOs in the Python scripts for that. I'm not sure how that
should be specified in dart_sdk.py.
This CL does not remove my previous change to allow building the NNBD
fork next to dart-sdk in the same root output directory. I'll revert
those changes in a different CL once this one lands.
Change-Id: I3bd28f273106ee90caf9474b2fadad120b2c2d0b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/119602
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
- Add `.style.yapf` with configuration to use Google style.
- Run `yapf` on all `.py` files in this repo.
- Manually fix one trailing space in a doc string.
- Run `git cl format runtime` to satisfy presubmit.
Change-Id: I7e6bd11e91f07926b9188362599af398551eed79
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111600
Commit-Queue: Nate Bosch <nbosch@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
This is variant of SIMARM build (ARM target and non-ARM host) but with a
word size mismatch (32-bit target and 64-bit host). We only expect to
build gen_snapshot binary in this mode.
This is the first step towards enabling AOT compilation targeting ARM
using 64-bit gen_snapshot binary.
This change also introduces --gen-snapshot flag for test.py which allows
to specify which gen_snapshot binary should be used for running tests.
Expected workflow with SIMARM_X64 build:
$ tools/build.py -a simarm_x64 -m release gen_snapshot
$ tools/build.py -a simarm -m release dart_precompiled_runtime
vm_platform
$ tools/test.py -a simarm -m release -c dartkp --gen-snapshot
out/ReleaseSIMARM_X64/gen_snapshot
Note that our ARM simulator can't be built as a 64-binary so we are
going to be using SIMARM runtime to test AOT compiled code produced by
SIMARM_X64 binary.
Issue https://github.com/dart-lang/sdk/issues/36839
Issue https://github.com/flutter/flutter/issues/22598
Change-Id: Id003900e8b46fc9d57975ab82b0c21852a176079
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100968
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Right now most of the dart SDK's python is compatible with python2
or python3. This change fixes a few of the build scripts to make
that completely true (at least when building the standard build on
Linux). There are only four types of changes:
- Bare `print` statements now use the `print ()` function
- `commands.getoutput` becomes `subprocess.check_output` with `shell=True`
- `xrange` becomes `range`
- `print >> sys.stderr` becomes `sys.stderr.write`
Starts work on addressing (but does not completely fix):
https://github.com/dart-lang/sdk/issues/28793
See related issue:
https://fuchsia-review.googlesource.com/c/fuchsia/+/272925
This change applys to both the `dev` and `master` branches.
Change-Id: Ibd3eb9b1f57520d2d745f05c2ac430b1d20943da
Closes#36662https://github.com/dart-lang/sdk/pull/36662
GitOrigin-RevId: beab165294982a7e369daf6d61aea63efcab1b9b
Change-Id: I6d240749a9ba0889b5a45a08f3c4c2c20291f484
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99707
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Alexander Thomas <athom@google.com>
This reverts commit 4afb45f5b8.
Reason for revert: Going to instead file a bug to get the `all' target appropriately fixed, if possible.
Original change's description:
> Change default target to "create_sdk".
>
> Currently the "all" target can lead to build errors and is unsupported,
> so fall back to a supported target instead.
>
> Change-Id: I925a785e4b81ab92e99c3842cb81c338c5a1d990
> Reviewed-on: https://dart-review.googlesource.com/c/87403
> Auto-Submit: Stevie Strickland <sstrickl@google.com>
> Reviewed-by: Zach Anderson <zra@google.com>
> Commit-Queue: Stevie Strickland <sstrickl@google.com>
TBR=zra@google.com,sstrickl@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: I27c567ad61e54bd2916027b6e27406bd67eb8330
Reviewed-on: https://dart-review.googlesource.com/c/89140
Reviewed-by: Stevie Strickland <sstrickl@google.com>
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Make sure the architectures listed by --help for the -a command
line option reflect all currently available architectures + 'all'.
Change-Id: I2759c7c7e846d38fce5afde1854bfd2db0dd8b70
Reviewed-on: https://dart-review.googlesource.com/c/88821
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Stevie Strickland <sstrickl@google.com>
Currently the "all" target can lead to build errors and is unsupported,
so fall back to a supported target instead.
Change-Id: I925a785e4b81ab92e99c3842cb81c338c5a1d990
Reviewed-on: https://dart-review.googlesource.com/c/87403
Auto-Submit: Stevie Strickland <sstrickl@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Stevie Strickland <sstrickl@google.com>
There is a race with downloading the prebuilt Dart SDK from CIPD
introduced by:
647e1e79eb
If the prebuilt Dart SDK isn't there, then generate_buildfiles.py will
fail. Instead check whether generate_buildfiles.py should be run
right before we try to build.
Change-Id: I1e25e5280075f9d1c7d96877602617ddfb40291e
Reviewed-on: https://dart-review.googlesource.com/77160
Reviewed-by: Jonas Termansen <sortie@google.com>
After this CL, the interpreter is included by default in the
JIT VM under the flag --enable-interpreter.
Reland with fix to NativeArgument setup in simulator_arm.cc
Change-Id: Ib9b4df6eb4d997dfbe361188b8a127828c1d9c6f
Reviewed-on: https://dart-review.googlesource.com/74003
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
This reverts commit 715ab7b30b.
Reason for revert: simarm and kernel precomp builds failing
Original change's description:
> [vm] Move the interpreter under a flag.
>
> After this CL, the interpreter is included by default in the
> JIT VM under the flag --enable-interpreter.
>
> Change-Id: I06458f20288d67981822788ee6e867c2127ebdd3
> Reviewed-on: https://dart-review.googlesource.com/71800
> Commit-Queue: Zach Anderson <zra@google.com>
> Reviewed-by: Alexander Markov <alexmarkov@google.com>
> Reviewed-by: Siva Annamalai <asiva@google.com>
> Reviewed-by: Régis Crelier <regis@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
TBR=rmacnak@google.com,alexmarkov@google.com,zra@google.com,asiva@google.com,regis@google.com
Change-Id: I3622f4dbe53288d07fc21b34ee5ff68f2682b36d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/74001
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
After this CL, the interpreter is included by default in the
JIT VM under the flag --enable-interpreter.
Change-Id: I06458f20288d67981822788ee6e867c2127ebdd3
Reviewed-on: https://dart-review.googlesource.com/71800
Commit-Queue: Zach Anderson <zra@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This CL adds support to build.py and test.py for building/testing
a VM with the interpreter on x64, e.g.:
$ ./tools/gn.py -m release -a x64 --bytecode
$ ./tools/build.py -m release -a x64 --bytecode runtime
$ ./tools/test.py -m release -a x64 -r vm -c dartkb language_2
Change-Id: I956d23790636609d4a2e71129481fcbd7afef9a0
Reviewed-on: https://dart-review.googlesource.com/65206
Commit-Queue: Zach Anderson <zra@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
build.py was only forwarding to ninja.py, so this CL just copies
ninja.py over build.py and removes ninja.py.
Change-Id: I7b13c8fb17dbc05825c35b3d806cd950bf1b953e
Reviewed-on: https://dart-review.googlesource.com/51520
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
Remove hack in bin/snapshot_utils.cc that avoided building a true app-jit snapshot for ARM, ARM64 and MIPS because of the multiple invocations above.
Add GN flags to choose to build script snapshots instead of app-jit snapshots, avoiding a slow training run inside a simulator.
Fixes#29580.
R=zra@google.com
Review-Url: https://codereview.chromium.org/2871713002 .
Flutter uses the same clang toolchain as Fuchsia. This CL puts Dart
on that toolchain, as well. This roll should entail no changes to
glibc version requirements on Linux.
The Fuchsia buildtools distribute clang-format with the toolchain
rather than separately, so this CL introduces forwarding scripts
that are copied to the right place under //buildtools.
This CL sets the default for the number of workers in //tools/gn.py
to 1, as the newer GN version fails occasionally when run
concurrently with other invocations.
As Flutter does, this CL uses the clang toolchain to build for
Android. Thus, it is now possible to build for Android on MacOS.
This change is a prerequisite for assembling the SDK in GN
rather than with a python script:
https://codereview.chromium.org/2848943003/
and will be nicer for making prebuilt SDKs for Fuchsia.
Resubmitting this with the following fixes:
1. Rolls further forward to get past a GN bug
2. Fixes the Android build.
3. Style cleanups in gn.py
Review-Url: https://codereview.chromium.org/2858873005 .
This reverts commit 6bf2c800fd.
There is still some strangeness with the new GN binary not wanting
to do an incremental build on top of a build that used an old GN
binary.
Review-Url: https://codereview.chromium.org/2861903002 .
Flutter uses the same clang toolchain as Fuchsia. This CL puts Dart
on that toolchain, as well. This roll should entail no changes to
glibc version requirements on Linux.
The Fuchsia buildtools distribute clang-format with the toolchain
rather than separately, so this CL introduces forwarding scripts
that are copied to the right place under //buildtools.
This CL sets the default for the number of workers in //tools/gn.py
to 1, as the newer GN version fails occasionally when run
concurrently with other invocations.
As Flutter does, this CL uses the clang toolchain to build for
Android. Thus, it is now possible to build for Android on MacOS.
This change is a prerequisite for assembling the SDK in GN
rather than with a python script:
https://codereview.chromium.org/2848943003/
and will be nicer for making prebuilt SDKs for Fuchsia.
Review-Url: https://codereview.chromium.org/2855283002 .
This reverts commit cc968ca45b.
This CL will have to be relanded in two pieces so that the
update to tools/gn.py lands before the unmodified version
can invoke the updated GN binary.
Review-Url: https://codereview.chromium.org/2855973006 .
Flutter uses the same clang toolchain as Fuchsia. This CL puts Dart
on that toolchain, as well. This roll should entail no changes to
glibc version requirements on Linux.
The Fuchsia buildtools distribute clang-format with the toolchain
rather than separately, so this CL introduces forwarding scripts
that are copied to the right place under //buildtools.
This CL sets the default for the number of workers in //tools/gn.py
to 1, as the newer GN version fails occasionally when run
concurrently with other invocations.
As Flutter does, this CL uses the clang toolchain to build for
Android. Thus, it is now possible to build for Android on MacOS.
This change is a prerequisite for assembling the SDK in GN
rather than with a python script:
https://codereview.chromium.org/2848943003/
and will be nicer for making prebuilt SDKs for Fuchsia.
R=whesse@google.com
Review-Url: https://codereview.chromium.org/2854583002 .
toolchain_prefix was not correctly propagated everywhere it needed to
go. This CL also adds an error to build.py if someone tries to use
--toolchain as it is not supported there.
R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2797303005 .
