This adjusts the default settings for the Windows build of the Swift
runtime to include reflection and to re-order them to match the Darwin
configuration to make it easier to identify differences.
The names of the variables in `DefaultSettings` should end in `_default`
so that the variable that they are defaulting can be overridden.
Otherwise CMake will just set the value and move on overriding the
setting coming from the commandline/cache file.
This adds the `swift_Concurrency` module to the new runtimes build. This
is sufficient to build the code but will require further fine tuning to
ensure that all the flags entirely identical and that the ABI surface is
also fully replicated.
Add an option to enable emitting a stacktrace on calls to `fatalError`.
This is unrelated to the runtime backtracer for diagnosing normal Swift
crashes.
rdar://142440689
This is required for the non-Darwin targets as `SWIFT_THREADING_DARWIN`
does not enable any additional code. However, that macro is used in
other places that are not yet integrated. This was identified by
building for Windows.
`defaulted_set` wasn't expanding the default variable, just setting the
value of the variable the name of the variable that should have been
doing the defaulting.
Making a more in-depth pass over the definition macros and flags in
SwiftSource.cmake _add_target_variant_swift_compile_flags.
These are only flags that actually matter for swiftCore though. This
does not include concurrency flags.
Adding vendor-specific extension points to the build system, giving
vendors a place to put their internal settings and defaults, without
having to modify the build directly. This helps reduce the chances of
merge conflicts and public changes breaking internal settings.
The location of the macros are set with `SwiftCore_PRIVATE_MODULE_DIR`,
so vendors can keep their private extensions in a separate location if
desired. Otherwise, it defaults to `cmake/modules/private`, which
intentionally does not exist at this time.
Currently, we have extensions for the default settings and global
settings.
Fixing some of the comments in DefaultSettings.cmake and
PlatformInfo.cmake.
I haven't added any vendor cache files yet, so the comment doesn't point
anywhere. Also fixing the reference to the location of the clang
resource headers in PlatformInfo.cmake.
This patch makes it simpler to setup reasonable defaults for a given
platform. The standard library has many knobs for configuration
purposes. This is great for providing cache files to configure specific
builds, but the build system should still generally work if someone runs
a minimal CMake invocation against the build without futzing with
various options.
