[Bug bootstrap/100026] New: cross GCC from clang fails: configure: error: *** A compiler with support for C++11 language features is required.

[unlvsur at live dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100026

            Bug ID: 100026
           Summary: cross GCC from clang fails: configure: error: *** A
                    compiler with support for C++11 language features is
                    required.
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: unlvsur at live dot com
  Target Milestone: ---

Created attachment 50553
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50553&action=edit
error message

I try to build a GCC cross-toolchain by using clang, targeting MacOS.

However, it looks like clang does not support -static-libgcc and
-static-libstdc++.

Any solution on this?