This CL implements a slightly altered compilation process for `dart
compile` on MacOS. Instead of the traditional approach of
concatenating a dart snapshot with the dart runtime, this new
implementation uses a new MachO segment to store the snapshot. Doing
so ensure users can properly sign the resulting binaries.
The dart runtime has also been updated to look for the snapshots in
this new segment.
There are new unit tests ensuring the dart runtime can correctly
identify MachO-formatted executables and an end-to-end test ensuring
`dart compile` produces code that has the new segment and produces
code that can be signed.
TEST=pkg/dartdev/test/commands/compile_test
Change-Id: Ibdce80455e02bc2b6fd345d80be8d75f989a9c28
Cq-Include-Trybots: luci.dart.try:analyzer-mac-release-try,dart-sdk-mac-arm64-try,dart-sdk-mac-try,pkg-mac-release-arm64-try,pkg-mac-release-try,vm-kernel-mac-debug-x64-try,vm-kernel-mac-product-x64-try,vm-kernel-mac-release-arm64-try,vm-kernel-mac-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/228080
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Ryan Macnak