LLVM: llvm-config --link-shared broken on Darwin

[maleadt]

❯ /Users/tim/Julia/depot/artifacts/bc0ef6f5449e8f49ae78ed6072c3cf51ea2c9dda/tools/llvm-config --link-shared
llvm-config: error: libLLVM-15jl.dylib is missing

We don't provide any dylib like that:

❯ ls -la /Users/tim/Julia/depot/artifacts/bc0ef6f5449e8f49ae78ed6072c3cf51ea2c9dda/lib | grep dylib
-r-xr-xr-x    1 tim  staff     50496 Jul 27 09:14 libClangdXPCLib.dylib
lrwxr-xr-x    1 tim  staff        13 Jul 27 09:14 libLLVM-15.0.dylib -> libLLVM.dylib
-r-xr-xr-x    1 tim  staff  51587504 Jul 27 09:14 libLLVM.dylib
-r-xr-xr-x    1 tim  staff    127888 Jul 27 09:14 libLTO.dylib
-r-xr-xr-x    1 tim  staff  37942480 Jul 27 09:14 libMLIR-C.dylib
-r-xr-xr-x    1 tim  staff  39106480 Jul 27 09:14 libMLIR.dylib
-r-xr-xr-x    1 tim  staff     53008 Jul 27 09:14 libRemarks.dylib
-r-xr-xr-x    1 tim  staff  49044576 Jul 27 09:14 libclang-cpp.dylib
-r-xr-xr-x    1 tim  staff  26014272 Jul 27 09:14 libclang.dylib
-r-xr-xr-x    1 tim  staff    115296 Jul 27 09:14 libmlir_async_runtime.dylib
-r-xr-xr-x    1 tim  staff   1205920 Jul 27 09:14 libmlir_c_runner_utils.dylib
-r-xr-xr-x    1 tim  staff     91264 Jul 27 09:14 libmlir_runner_utils.dylib

I'm not sure why the configured suffix doesn't work on macOS:

Yggdrasil/L/LLVM/common.jl

Line 208 in ec78fa7

CMAKE_FLAGS+=(-DLLVM_VERSION_SUFFIX:STRING="jl")

Maybe we need another workaround a la

Yggdrasil/L/LLVM/common.jl

Lines 391 to 396 in ec78fa7

	# Work around llvm-config bug by creating versioned symlink to libLLVM
	# https://github.com/JuliaLang/julia/pull/30033
	if [[ "${target}" == *darwin* ]]; then
	LLVM_VER=$(${WORKSPACE}/bootstrap/bin/llvm-config --version | cut -d. -f1-2)
	ln -s libLLVM.dylib ${prefix}/lib/libLLVM-${LLVM_VER}.dylib
	fi

cc @vchuravy