Enable LibraryImportGenerator.Tests on BSD/SunOS

[am11]

These should be fine with bootstrap test build. We need to set TOOLCHAIN instead of triplet so DNNE proj gets target-triplet set by convention.

[am11]

Upstream PR dotnet/arcade#16995.

cc @Thefrank, @sethjackson

[Thefrank]

short: fine but maybe move the freebsd12 to 14 or 15? or the current version the docker image uses?

---

long:
Not a compiler engineer so I am not 100% how it impacts the build but LLVM can actually use major.minor for FreeBSD. ABI and symbol versioning?

From my FreeBSD 15.0:
$ cc --version

FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2)
Target: x86_64-unknown-freebsd15.0
Thread model: posix
InstalledDir: /usr/bin

cmake manual (4.3.3) still shows using triple so I am not sure why this would start failing now
(https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling-using-clang)

but if it works, then it works 🤷

[am11]

CMAKE_C_COMPILER_TARGET will set the value of --target https://github.com/Kitware/CMake/blob/04c87b945ca15ae5c4e7f75df6a38543616219b7/Modules/CMakeDetermineCCompiler.cmake#L95.

The error we were getting was different: dotnet/arcade#16995 (comment) emerging from

runtime/src/libraries/System.Runtime.InteropServices/tests/TestAssets/NativeExports/NativeExports.csproj

Lines 66 to 85 in 24547a7

	<Exec Command="cmake -P &quot;$(RepositoryEngineeringDir)/native/output-toolchain-info.cmake&quot;"
	EchoOff="true"
	ConsoleToMsBuild="true"
	StandardOutputImportance="Low"
	EnvironmentVariables="TARGET_BUILD_ARCH=$(TargetArchitecture)">
	<Output TaskParameter="ConsoleOutput" PropertyName="CrossTargetXml" />
	</Exec>
	<XmlPeek XmlContent="$(CrossTargetXml)" Query="toolchain-info/target-triple/text()">
	<Output TaskParameter="Result" PropertyName="TargetTriple" />
	</XmlPeek>
	<XmlPeek XmlContent="$(CrossTargetXml)" Query="toolchain-info/linker-args/text()">
	<Output TaskParameter="Result" PropertyName="DnneLinkerUserFlags" />
	</XmlPeek>
	<XmlPeek XmlContent="$(CrossTargetXml)" Query="toolchain-info/compiler-args/text()">
	<Output TaskParameter="Result" PropertyName="DnneCompilerUserFlags" />
	</XmlPeek>
	<PropertyGroup>
	<CommonToolchainArgs>--target=$(TargetTriple) --sysroot=$(ROOTFS_DIR)</CommonToolchainArgs>

because the value of TOOLCHAIN was null. Note that TOOLCHAIN is our own variable in this context.

maybe move the freebsd12 to 14 or 15?

Updated. 👍 Mostly it's backwards compatible but if it gets too old, then it ends. up using fallback/shim code on newer platform (#if __FreeBSD_version types of checks affect degraded impl for "old" binaries in newer kernel code).

[am11]

Timeout failures are unrelated.

[sethjackson]

Any chance this can get merged soon? Without TOOLCHAIN fixes the cross build fails for OpenBSD with some subsets.

[janvorli]

/ba-g the build timeouts are unrelated to this change and are happening on multiple PRs.