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Zach Anderson 939ae55c00 Revert "[gn] Deprecate copy_trees()" 
This reverts commit f60d32167f.

Reason for revert: build failures in post submit

Original change's description:
> [gn] Deprecate copy_trees()
>
> Part of https://github.com/flutter/flutter/issues/144430
>
> Previously, this code did backflips to accomplish two goals
> 1. Collect the paths of all files that would be copied from one place to another after applying regex filters so that they could be listed as the "inputs" to a GN action.
> 2. Arrange so that the python script doing the above would only be invoked once during GN to reduce the cost of calling out to python.
>
> However, this is exactly the use-case for the "depfile" parameter to a GN action. Instead of running the script during GN to populate the "inputs" list, when we run the copy_tree.py script, we can instead ask it to generate a depfile to collect all the input files that were actually copied after applying the regex filter. Using that, we don't have to run the python script at all during GN.
>
> TEST=it builds
>
> Change-Id: I41a251ce4659119cdc3997bb2d6fc7ee0831bb6d
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/356481
> Reviewed-by: Siva Annamalai <asiva@google.com>
> Commit-Queue: Zach Anderson <zra@google.com>
> Reviewed-by: Alexander Aprelev <aam@google.com>

Change-Id: Ie4409ed93a3c990fbce375dba1f2d9a3c735ea3f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/356308
Auto-Submit: Zach Anderson <zra@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Zach Anderson <zra@google.com>
2024-03-08 20:59:53 +00:00
..
config Revert "[Fuchsia] Remove the legacy gn build rules for fuchsia" 2024-03-08 20:50:31 +00:00
dart Revert "[gn] Deprecate copy_trees()" 2024-03-08 20:59:53 +00:00
fuchsia Revert "[Fuchsia] Remove the legacy gn build rules for fuchsia" 2024-03-08 20:50:31 +00:00
linux [build] Use Fuchsia-provided sysroot. 2023-11-02 14:39:10 +00:00
mac Spelling build 2023-01-23 08:56:14 +00:00
rbe [infra] Simplify RBE configuration and allow concurrent builds. 2024-03-04 14:54:26 +00:00
rust [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00
sanitizers Spelling build 2023-01-23 08:56:14 +00:00
secondary [build] Build the standard c++ library from source. 2023-05-22 23:38:58 +00:00
toolchain [infra] Simplify RBE configuration and allow concurrent builds. 2024-03-04 14:54:26 +00:00
.gitignore [infra] Support for Alpine Linux Sysroot 2023-01-19 10:36:51 +00:00
detect_host_arch.py [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00
executable_suffix.gni Fix builds targeting Android from a Windows host gen_snapshot. 2019-06-07 00:49:33 +00:00
find_depot_tools.py [build] Update Windows SDK to 10.0.22621.0. 2024-02-08 16:06:50 +00:00
gn_helpers.py Fix gn helper script to create *valid* strings for settings containing backslashes. 2021-05-19 12:35:16 +00:00
gn_run_binary.py [build] Make app snapshot build failures copy/pastable. 2021-10-14 11:51:32 +00:00
OWNERS [infra] Give VM engineers OWNERS over tools/gn.py et al. 2022-04-25 17:47:23 +00:00
README.dart.md fix(docs): corrects common typos in project documentation 2021-05-18 15:48:18 +00:00
shim_headers.gni add tools for generating shim headers 2023-04-19 01:37:48 +00:00
vs_toolchain.py [infra] Support testing with RBE on Windows. 2024-02-29 10:33:09 +00:00

README.dart.md

This directory was taken from a snapshot of flutter/engine/src/build/.

The snapshot was taken with a recursive copy cp -R of the directory from the flutter repository.

The contents has now diverged significantly from Flutter, and is maintained independently by the Dart team. It is used to support the GN build system.