LinkerArg doesn't seem to work on net8.0-macos NativeAOT app

[vaind]

Description

LinkerArg doesn't seem to work when publishing NativeAOT targeting net8.0-macos. Maybe I'm missing something, or misinterpreting the reproduction steps but at least that's what it looks like. The actual issue where I'm coming from is that the linker fails when adding a static library that depends on curl, even when -lcurl is added as LinkerArg. The same works just fine when targeting net8.0

Reproduction Steps

Steps to Reproduce

1. Create new macOS app: dotnet new macos
2. Add <PublishAot>true</PublishAot> to .csproj
3. Add some linker args that should fail the build, e.g.

  <ItemGroup>
    <LinkerArg Include="-foobar"/>
    <LinkerArg Include="-lnonexistentlib"/>
  </ItemGroup>

4. dotnet publish -flp:logfile=build.log --runtime=osx-arm64

Expected behavior

publishing fails

Actual behavior

publishing succeeds

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

Related to:

• [macOS / NativeAOT] Build error since 4.0.0-beta2 getsentry/sentry-dotnet#3070

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

LinkerArg doesn't seem to work when publishing NativeAOT targeting net8.0-macos. Maybe I'm missing something, or misinterpreting the reproduction steps but at least that's what it looks like. The actual issue where I'm coming from is that the linker fails when adding a static library that depends on curl, even when -lcurl is added as LinkerArg. The same works just fine when targeting net8.0

Reproduction Steps

Steps to Reproduce

1. Create new macOS app: dotnet new macos
2. Add true to .csproj
3. Add some linker args that should fail the build, e.g.

  <ItemGroup>
    <LinkerArg Include="-foobar"/>
    <LinkerArg Include="-lnonexistentlib"/>
  </ItemGroup>

4. otnet publish -flp:logfile=build.log --runtime=osx-arm64

Expected behavior

publishing fails

Actual behavior

publishing succeeds

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

Related to:

• [macOS / NativeAOT] Build error since 4.0.0-beta2 getsentry/sentry-dotnet#3070

Author:	vaind
Assignees:	-
Labels:	area-NativeAOT-coreclr
Milestone:	-

[filipnavara]

The macOS bindings use their own linker step. You can use one of the more specific items to add linker arguments (which work both for net8.0 and net8.0-macos):
https://github.com/xamarin/xamarin-macios/blob/34f6b6aa8bdc633fcea24939a1ea6e9e0af9d8ac/dotnet/targets/Xamarin.Shared.Sdk.targets#L1332-L1336

In this case it's likely <NativeSystemLibrary>curl</NativeSystemLibrary>. For generic linker arguments it's <ExtraLinkerArg>. <LinkerArg> is an implementation detail.

[vaind]

ExtraLinkerArg

These docs are wrong/incomplete then? https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/interop#linking

[filipnavara]

These docs are wrong/incomplete then?

Yeah, they should be updated.

[vaind]

Both ExtraLinkerArg and NativeSystemLibrary seem to fix the issue, thanks

[vaind]

These docs are wrong/incomplete then?

Yeah, they should be updated.

https://github.com/dotnet/docs/pull/39230/files

Tagging subscribers to 'os-ios': @steveisok, @akoeplinger, @kotlarmilos
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

LinkerArg doesn't seem to work when publishing NativeAOT targeting net8.0-macos. Maybe I'm missing something, or misinterpreting the reproduction steps but at least that's what it looks like. The actual issue where I'm coming from is that the linker fails when adding a static library that depends on curl, even when -lcurl is added as LinkerArg. The same works just fine when targeting net8.0

Reproduction Steps

Steps to Reproduce

1. Create new macOS app: dotnet new macos
2. Add <PublishAot>true</PublishAot> to .csproj
3. Add some linker args that should fail the build, e.g.

  <ItemGroup>
    <LinkerArg Include="-foobar"/>
    <LinkerArg Include="-lnonexistentlib"/>
  </ItemGroup>

4. dotnet publish -flp:logfile=build.log --runtime=osx-arm64

Expected behavior

publishing fails

Actual behavior

publishing succeeds

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

Related to:

• [macOS / NativeAOT] Build error since 4.0.0-beta2 getsentry/sentry-dotnet#3070

Author:	vaind
Assignees:	-
Labels:	untriaged, os-ios, area-NativeAOT-coreclr
Milestone:	-