[Bug target/84797] New: RISC-V: add --with-multilib-list support

[wilson at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84797

            Bug ID: 84797
           Summary: RISC-V: add --with-multilib-list support
           Product: gcc
           Version: 7.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: wilson at gcc dot gnu.org
  Target Milestone: ---

The current RISC-V linux multilib support builds 4 combinations of architecture
and ABI, which is useful for an embedded linux cross compiler, but not very
useful for a native linux compiler.  It was proposed that we add
--with-multilib-list support similar to other targets, so people can choose the
list of multilibs they want to support.