解决PlatformIO在VScode中初次安装速度慢的问题，包含工具链等文件

SCons - a software construction tool Change Log NOTE: The 4.0.0 Release of SCons dropped Python 2.7 Support NOTE: 4.3.0 now requires Python 3.6.0 and above. Python 3.5.x is no longer supported RELEASE 4.7.0 - Sun, 17 Mar 2024 17:22:20 -0700 From Ataf Fazledin Ahamed: - Use of NotImplemented instead of NotImplementedError for special methods of _ListVariable class From Joseph Brill: - Fix issue #2755: the msvs tool no longer writes the OS environment SCONS_HOME value into the SCons environment when the SCONS_HOME variable already exists in the SCons environment. Prior to this change, a valid user-defined SCons environment value for SCONS_HOME would be overwritten with the OS environment value of SCONS_HOME which could be None (i.e., undefined). - Update the windows registry keys for detection of Visual Studio 2015 Express ('14.0Exp'): the VS2015 registry key ('WDExpress') appears to be different than the registry key ('VCExpress') for earlier Visual Studio express versions. The registry key value is relative to the installation root rather than the VC folder and requires additional path components during evaluation. - Fix the vs-6.0-exec.py test script: the msvs generated project is 'foo.dsp' and the command-line invocation of the Visual Studio development environment program was attempting to build 'test.dsp'. The command-line invocation was changed to build 'foo.dsp'. - Update the msvs project generation test scripts: the msvs project execution tests could produce a "false positive" test result when the test executable is correctly built via the SConstruct env.Program() call and the command-line invocation of the Visual Studio development environment program fails. The test passes due to the existence of the test executable from the initial build. The tests were modified to delete the test executable, object file, and sconsign file prior to the command-line invocation of the VS development binary. - Method unlink_files was added to the TestCmd class that unlinks a list of files from a specified directory. An attempt to unlink a file is made only when the file exists; otherwise, the file is ignored. - Fix issue #4320: add an optional argument list string to configure's CheckFunc method so that the generated function argument list matches the function's prototype when including a header file. From Thaddeus Crews: - Explicitly wrap non-serializable values in json dump - Implemented SCons.Util.sctyping as a safe means of hinting complex types. Currently only implemented for `Executor` as a proof-of-concept. From William Deegan: - Fix sphinx config to handle SCons versions with post such as: 4.6.0.post1 From Michał Górny: - Remove unnecessary dependencies on pypi packages from setup.cfg From Sten Grüner: - Fix of the --debug=sconscript option to return exist statements when using return statement with stop flag enabled From Prabhu S. Khalsa: - Fix typo in user documentation (issue #4458) From Andrew Morrow: - The NewParallel scheduler is now the default, the `tm_v2` flag is removed, and the old scheduler is opt-in under `--experimental=legacy_sched`. Additionally, the new scheduler is now used for -j1 builds as well. - A python interpreter with support for the `threading` package is now required, and this is enforced on startup. SCons currently sets its minimum supported Python to 3.6, and it was not until Python 3.7 where `threading` became default supported. In practice, we expect most real world Python 3.6 deployments will have `threading` support enabled, so this will not be an issue. - CacheDir writes no longer happen within the taskmaster critical section, and therefore can run in parallel with both other CacheDir writes and the taskmaster DAG walk. - The NewParallel scheduler now only adds threads as new work requiring execution is discovered, up to the limit set by -j. This should reduce resource utilization when the achievable parallelism in the DAG is less than the -j limit. From Mats Wichmann: - Add support for Python 3.13 (as of alpha 2). So far only affects expected bytecodes in ActionTests.py. - sconsign cleanup - remove some dead code, minor manpage tweaks. - Be more cautious about encodings fetching command output on Windows. Problem occurs in piped-spawn scenario, used by Configure tests. Fixes #3529. - Clarify/fix documentation of Scanners in User Guide and Manpage. Fixes #4468. - Fix bad typing in Action.py: process() and strfunction(). - Add Pseudo() to global functions, had been omitted. Fixes #4474. - Improve handling of file data that SCons itself processes - try harder to decode non-UTF-8 text. SCons.Util.to_Text now exists to convert a byte stream, such as "raw" file data. Fixes #3569, #4462. The Pseudo manpage entry was updated to provide more clarity. - Clarify how SCons finds the project top directory, and what that is used for. - The internal routine which implements the PyPackageDir function would fail with an exception if called with a module which is not found. It will now return None. Updated manpage entry and docstring.. - Doc update: standardized on the use of a new entity &MSVC; to describe the Microsoft C++ compiler. Update the version table slightly. Amplified the usage of MSVC_VERSION. - Improve SharedLibrary docs a bit. - More consistent use of &Python; in the manpage. A few links added. A warning about overwriting env['ENV'] and one about Configure checks possibly not running in in no-exec mode also added. - Update warnings module: adds docstrings, drop three unused warnings (DeprecatedSourceCodeWarning, TaskmasterNeedsExecuteWarning, DeprecatedMissingSConscriptWarning) add two warnings to manpage (cache-cleanup-error, future-reserved-variable), improve unittest, tweak Sphinx build. - Add locking around creation of CacheDir config file. Fixes #4489. - Clarify MergeFlags usage of a dict argument. - SCons documentation build can now be controlled through SKIP_DOC variable - rather than just true/false can now specify skip none, skip all, skip pdf docs, skip api docs. RELEASE 4.6.0 - Sun, 19 Nov 2023 17:22:20 -0700 From Max Bachmann: - Add missing directories to searched paths for mingw installs From Joseph Brill: - Fix issue #4312: the cached installed msvc list had an indirect dependency on the target architecture in the environment dictionary. The first call to construct the installed msvc list now forces the target architecture to be undefined, constructs the installed msvc list, and then restores the original target architecture. Note: an indirect dependency on the VSWHERE construction variable in the environment remains. - Fix issue #4312: explicitly guard against an empty regular expression list when msvc is not installed. - When trying to find a valid msvc batch file, check that the compiler executable (cl.exe) exists for VS6 to VS2015 to avoid executing the msvc batch file. Always check that the compiler executable is found on the msvc script environment path after running the msvc batch file. Only use the sdk batch files when all of the msvc script host/target combinations have been exhausted and a valid script was not found. - Add ARM64 host configurations for windows and msvc. Note: VS2013 and earlier has not been tested on ARM64. - If necessary, automatically define VSCMD_SKIP_SENDTELEMETRY for VS2019 and later on ARM64 hosts when using an arm