[Bug c++/87726] New: -fdebug-prefix-map doesn't work with lto

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87726

            Bug ID: 87726
           Summary: -fdebug-prefix-map doesn't work with lto
           Product: gcc
           Version: lto
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ville.voutilainen at gmail dot com
  Target Milestone: ---

Created attachment 44887
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44887&action=edit
Test application

With the attached source, uncommenting the lto flags at the top of the Makefile
lead to a linker error when making the source. The source needs the development
headers and libs for dwarf and dw.

This problem breaks the attempts to build boot2qt with lto enabled with yocto.