[UR] don't link libirc when building with icpx

[pbalcer]

This breaks SYCL unittests in some configurations.

[jinge90]

Hi, @pbalcer
Just out of curiosity, icpx will link some other intel specific libraries such as libsvml as well and will emit "svml_" symbols in some scenario, have we met such issues? If yes, icpx has 'no-intel-lib=' option to disable them: https://www.intel.com/content/www/us/en/docs/dpcpp-cpp-compiler/developer-guide-reference/2023-2/no-intel-lib-qno-intel-lib.html

Thanks very much.

[pbalcer]

Hi, @pbalcer Just out of curiosity, icpx will link some other intel specific libraries such as libsvml as well and will emit "svml__" symbols in some scenario, have we met such issues? If yes, icpx has 'no-intel-lib=_' option to disable them: https://www.intel.com/content/www/us/en/docs/dpcpp-cpp-compiler/developer-guide-reference/2023-2/no-intel-lib-qno-intel-lib.html

Thanks very much.

This is only an issue with libirc, which was being pulled in automatically from a couple of different sources, including LLVMSupport and LLVMSymbolize, which we use in sanitizers. This used to be limited to UR's .so files, but now that UR is being linked statically, the libirc dependency gets added to libsycl, which is what I'm trying to prevent, because that's causing all sorts of issues.

I modified the patch to set -no-intel-lib=libirc. Thanks!

[kswiecicki]

CI failures are unrelated.