In this case we can obsolete the attribute on both legacy and dotnet
since the replacement attribute is available on both. However this does
require a small update to the legacy linker (and is part of the PR).
Fix https://github.com/xamarin/xamarin-macios/issues/10674
This means:
* Move the parts of the ApplyPreserveAttribute step that we don't need for.NET
into a new MobileApplyPreserveAttribute step, and have mtouch and mmp use
that step instead of the ApplyPreserveAttribute step.
* Copy ApplyPreserveAttributeBase into dotnet-linker from the upstream tuner
source (with minor modifications) so that our ApplyPreserveAttribute step
compiles.
* Create a DotNetSubStepDispatcher class that we're going to use as our
substep dispatcher, create an instance of it and insert it into the list of
linker steps.
* Also a workaround for the lack of LinkContext.GetAssemblies (): add a step
that collects all the assemblies and stores them in a list, so that we can
have our own GetAssemblies implementation.
I filed a linker issue to see if we can get LinkContext.GetAssemblies ()
exposed to us: https://github.com/mono/linker/issues/1455.
Fixes this startup crash with the linkall test:
2020-08-26 19:47:10.219697+0200 link all[32709:6065783] Xamarin.iOS: Fatal error: failed to load the method 'ObjCRuntime.Runtime.Initialize'.
=================================================================
Native Crash Reporting
=================================================================
Got a abrt while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
=================================================================
Native stacktrace:
=================================================================
0x104007b0e - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libmonosgen-2.0.dylib : mono_dump_native_crash_info
0x103fb4437 - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libmonosgen-2.0.dylib : mono_handle_native_crash
0x104007365 - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libmonosgen-2.0.dylib : sigabrt_signal_handler
0x7fff51c005fd - /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 13.5.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_platform.dylib : _sigtramp
0x0 - Unknown
0x7fff51af0b7c - /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 13.5.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libsystem_c.dylib : abort
0x103daad98 - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libxamarin-debug.dylib : xamarin_assertion_message
0x103dade77 - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libxamarin-debug.dylib : xamarin_initialize
0x103dbf80b - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/libxamarin-debug.dylib : xamarin_main
0x103cd2f0d - /Users/rolf/Library/Developer/CoreSimulator/Devices/289E372A-501C-4499-A1A6-59C5B3B6A9AE/data/Containers/Bundle/Application/4A5F3968-6980-4E90-88A2-2E77AE039C40/link all.app/link all : main
0x7fff51a231fd - /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 13.5.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/libdyld.dylib : start
This is a partial/modified port of the initial linker support (bc88790201)
Co-authored-by: Sebastien Pouliot <sebastien@xamarin.com>
* [mtouch/mmp] Share Application.IsDualBuild, Is32Build and Is64Build.
* [mtouch/mmp] Share --tls-provider and --http-message-handler.
* [mtouch/mmp] Share --force.
* [mtouch/mmp] Share --cache.
* [mtouch/mmp] Share --nolink, --linksdkonly, --linkplatform and --linkskip.
* [mtouch/mmp] Share --i18n.
* [mtouch/mmp] Share --xml.
* [mtouch/mmp] Share --registrar and --runregistrar.
* [mtouch/mmp] Share --warn-on-type-ref.
* [mtouch/mmp] Share --sdk.
* [mtouch/mmp] Share --debug.
* [mtouch/mmp] Share --reference, and deprecate -r|--ref and -a|--assembly.
* [mtouch/mmp] Share --targetver, and deprecate mmp's --minos.
* [msbuild] Adjust tests after switching to use --reference instead of -r.
* Update according to review.
* [mmp] Remove --registrar:il.
The IL generator was what MonoMac had before the dynamic/static registrar code
got shared between MonoTouch and MonoMac. The IL registrar been gone for
years, and as far as I know nobody ever used --registrar:il, even though it
was provided as a compatibility option in the beginning (we still had the IL
registrar around for a while after adding the static+dynamic registrars, until
it was completely replaced by the dynamic registrar).
So just remove this option, if anyone ever used it they can replace it with
--registrar:dynamic.
* [mtouch/mmp] Keep bundler-specific code in its corresponding file.
* Move much of ErrorHandler.cs into a partial class in ErrorHandler.tools.cs,
which is referenced by mtouch and mmp (but not our runtime).
* Add ErrorHandler.runtime.cs for runtime-specific bits, including a simpler
version of ErrorHandler.Show. In particular this gets rid of the call to
Environment.Exit, which should never happen at runtime.
* Rename MonoTouchException and MonoMacException to ProductException, which
allows us to remove a lot of ifdefs.
* This required moving Application.LoadSymbols and Target.LoadSymbols to
shared mtouch/mmp code.
* Files outside the project directory now show up with a much more logical
name in the IDE. External files have a link target which is relative to the
root xamarin-macios directory, and files included from the mono archive show
up as such as well.
* Rename a few mtouch/mmp-specific files to contain 'mtouch' or 'mmp' in the
filename, to avoid having multiple files in the projects with the same name
(it's confusing every time you search for a filename in the IDE and get
multiple filenames where only the directory is different).
* Add a tools.sln that contains only the mtouch and mmp projects. This makes
it easier to work with both mtouch and mmp and the same time, while not
making VSfM unbearably slow by loading many projects in the same solution.
Sebastien Pouliot
Rolf Bjarne Kvinge