[Bug driver/90386] New: Offloading: libgfortran, libm dependencies

[tschwinge at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90386

            Bug ID: 90386
           Summary: Offloading: libgfortran, libm dependencies
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: openacc, openmp
          Severity: normal
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tschwinge at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

Offloading code generation may depend on libgfortran, or libm, for example,
when compiling Fortran code, or when OMP regions use math functions.  Currently
you manually have to specify 'gfortran -foffload=-lgfortran' (implicit
'-lgfortran', but not implicit '-foffload=-lgfortran' for offloading code
generation), or have to specify '-lm -foffload=-lm' ('-lm' alone should be
sufficient?).

See <http://mid.mail-archive.com/87h9m9e1qj.fsf@schwinge.name> for some more
details, from a few years ago.