[Bug target/61714] New: configure --with-arch and --with-cpu are ignored on aarch64

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61714

            Bug ID: 61714
           Summary: configure --with-arch and --with-cpu are ignored on
                    aarch64
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: rearnsha at gcc dot gnu.org
          Reporter: rearnsha at gcc dot gnu.org
            Target: aarch64

The --with-arch and --with-cpu options on aarch64 are accepted and validated
during configure but have no effect on the compiler.  This is because
OPTION_DEFAULT_SPECS hasn't been defined to map these settings through to the
rest of the driver option handling code.