| OLD | NEW |
| 1 This directory contains the hashes of tar.gz files uploaded to cloud storage. | 1 This directory contains the hashes of tar.gz files uploaded to cloud storage. |
| 2 Hooks in the DEPS files run "download_from_google_storage" to download these | 2 Hooks in the DEPS files run "download_from_google_storage" to download these |
| 3 tarfiles, and unpack them. These tar files contain a stable Dart SDK, which | 3 tarfiles, and unpack them. These tar files contain a stable Dart SDK, which |
| 4 is used to build the observatory and to run the test scripts. | 4 is used to build the observatory and to run the test scripts. |
| 5 | 5 |
| 6 The hooks use the --auto-platform feature, so that only the SDK for the | 6 The hooks use the --auto-platform feature, so that only the SDK for the |
| 7 current platform (linux, macos, or windows) is downloaded. This requires | 7 current platform (linux, macos, or windows) is downloaded. This requires |
| 8 the subdirectories to have the special names "linux", "win", and "mac", which | 8 the subdirectories to have the special names "linux", "win", and "mac", which |
| 9 the download script is hardcoded to recognize. | 9 the download script is hardcoded to recognize. |
| 10 | 10 |
| 11 The linux SDK has three extra dart executables added to the bin directory. | 11 The linux SDK has three extra dart executables added to the bin directory. |
| 12 'dart-mips', 'dart-arm', and 'dart-arm64' are executables compiled to run on | 12 'dart-mips', 'dart-arm', and 'dart-arm64' are executables compiled to run on |
| 13 mips, arm, and arm64 (aarch64) processors, respectively. | 13 mips, arm, and arm64 (aarch64) processors, respectively. We are currently |
| 14 using the 32-bit ia32 build as the default on linux, windows, and macos. |
| 14 | 15 |
| 15 To upload new versions of these tar files, use the "upload_to_google_storage" | 16 To upload new versions of these tar files, use the "upload_to_google_storage" |
| 16 tool in depot_tools, and download the new stable SDKs from the dartlang.org | 17 tool in depot_tools, and download the new stable SDKs from the dartlang.org |
| 17 web page. The mips and arm executables must be copied from the machines that | 18 web page. The mips and arm executables must be copied from the machines that |
| 18 build them, and stripped. There should be no need to update these tar files | 19 build them, and stripped. Because these SDKs are used for the presubmit |
| 19 for every new stable version of Dart. | 20 dartfmt check on changed files, they may need to be updated often when |
| 21 dartfmt is changing rapidly. |
| 20 | 22 |
| OLD | NEW |