rolfbjarne

Issue #16678: removable linker attributes

Goal

Reduce linked application size by removing macios platform-assembly custom attributes once every build-time and runtime consumer has finished with them. Except for attributes proven safe to remove unconditionally, only remove attributes when assembly preparation and post-processing are both enabled with the trimmable-static registrar.

Findings

There are three existing removal mechanisms:

rolfbjarne

Cluster A — Span API Survey Report

Below is the complete markdown for cluster_A_result.md. Since no file-write tool is available in this environment, the content is returned here for the main agent to persist.

---

Cluster A

Frameworks surveyed: CoreFoundation, CoreGraphics, CoreText, CoreMedia, CoreVideo, CoreImage, CoreAnimation. Total candidate APIs evaluated: ~80 (grouped from 131 raw lines).

rolfbjarne

$ curl https://api.openai.com/v1/completions -H "Content-Type: application/json" -H "Authorization: Bearer $API_KEY" -d '{"model": "text-davinci-003", "prompt": "Is this an inclusive code review comment: this is very good code!", "temperature": 0, "max_tokens": 70}'

{
    "id": "cmpl-6dKMNKwvoYSF8SLD5Y2HSDakDZgqz",
    "object": "text_completion",
    "created": 1674831075,
    "model": "text-davinci-003",
    "choices":
    [
        {

rolfbjarne

rolf@ ~/test/bundlestructure $ dotnet new macos
The template "macOS Application" was created successfully.

rolf@ ~/test/bundlestructure $ dotnet build

MSBuild version 17.4.0+18d5aef85 for .NET
  Determining projects to restore...
  Restored /Users/rolf/test/bundlestructure/bundlestructure.csproj (in 119 ms).
  Detected signing identity:

rolfbjarne

_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/Microsoft.Win32.Primitives.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/Microsoft.Win32.Registry.AccessControl.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/Microsoft.Win32.Registry.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/netstandard.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/System.AppContext.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/System.Collections.Concurrent.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/System.Collections.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/System.Collections.NonGeneric.dll
_mac-build//Library/Frameworks/Xamarin.Mac.framework/Versions/git/lib/mono/4.5/Facades/System.Co

rolfbjarne

Keybase proof

I hereby claim:

• I am rolfbjarne on github.
• I am rolfbjarne (https://keybase.io/rolfbjarne) on keybase.
• I have a public key ASB7VNis2wnoySoHWAdAvJrPhgkKoQbmAqm7EzKePxO9CAo

To claim this, I am signing this object:

rolfbjarne

diff --git a/Make.config b/Make.config
index 57462c6..ba5f835 100644
--- a/Make.config
+++ b/Make.config
@@ -79,6 +79,7 @@ TVOS_SDK_VERSION=10.0
 MIN_IOS_SDK_VERSION=6.0
 MIN_OSX_SDK_VERSION=10.7
 MIN_WATCHOS_SDK_VERSION=2.0
+MIN_WATCH_OS_VERSION=1.0
 MIN_TVOS_SDK_VERSION=9.0

rolfbjarne

diff --git a/tools/mtouch/Target.cs b/tools/mtouch/Target.cs
index cf522ba..af75c72 100644
--- a/tools/mtouch/Target.cs
+++ b/tools/mtouch/Target.cs
@@ -377,34 +377,8 @@ namespace Xamarin.Bundler
 			GetCustomAttributeReferences (assembly, assemblies, exceptions);
 			GetCustomAttributeReferences (main, assemblies, exceptions);
 			if (main.HasTypes) {
-				foreach (var t in main.Types) {
-					GetTypeReferences (t, assemblies, exceptions);

rolfbjarne

diff --git a/mono/mini/mini-llvm.c b/mono/mini/mini-llvm.c
index b83c823..ab39f17 100644
--- a/mono/mini/mini-llvm.c
+++ b/mono/mini/mini-llvm.c
@@ -5810,8 +5810,19 @@ process_bb (EmitContext *ctx, MonoBasicBlock *bb)
 			const char *name = (const char*)ins->inst_p0;
 			LLVMValueRef var;
 
-			if (!ctx->module->objc_selector_to_var)
+			if (!ctx->module->objc_selector_to_var) {

rolfbjarne

diff --git a/mcs/build/profiles/monotouch_runtime.make b/mcs/build/profiles/monotouch_runtime.make
index 1603d12..4fb49a0 100644
--- a/mcs/build/profiles/monotouch_runtime.make
+++ b/mcs/build/profiles/monotouch_runtime.make
@@ -41,3 +41,5 @@ MOBILE_STATIC = yes
 MOBILE_PROFILE = yes
 
 PROFILE_DISABLE_BTLS=1
+
+MCS_FLAGS = $(MONOTOUCH_MCS_FLAGS)