
Currrently flang-rt assumes that LLVM was always built with the dynamic MSVC runtime. This may not be the case, if the user has specified a different runtime with -DCMAKE_MSVC_RUNTIME_LIBRARY. Since this flag is implied by -DLLVM_ENABLE_RPMALLOC=On, which is used by the Windows release script, this is causing that script to fail. Fixes #151920