Error regarding link and including boost threads

Hi, I was attempting to compile spring development version at using clang-cl with the /fallback and -fms-compatibility-version=19.00.23026 flags as cl compiler can’t compile some of the libaries as clang-cl can and vis versa. The error message the stop the compile process is this.

I’m not sure to what to make of this. I can reproduce the bug by merely include the boost header and lib built by cl, in a separate program. Regardless, is this bug the result of lacking features that clang-cl needed compatibility wise, or am I doing something when setting up clang-cl.

Msvc: 2015

clang-cl: built from trunk