[PATCH] RISC-V: Force linker error exit after unresolvable reloc.

[Jim Wilson]

On Mon, Sep 30, 2019 at 5:39 AM Maciej W. Rozycki <macro@wdc.com> wrote:
>  FYI, it's better done with one the percent-codes to `_bfd_error_handler'
> rather than aborting the link right away, so that any further link errors
> are also reported and you don't have to shake them out one by one.  I've
> done such an improvement for several error cases in the MIPS backend.

I was pressed for time.  I found this by accident while working on a
bigger and more important problem.  The right way to fix this is
presumably the same way I fixed the bfd_reloc_dangerous support later
in the same function.

I don't see the practical use for emitting more linker errors in this
case though.  If you accidentally linked non-pic code into a shared
library, then you are just going to get a lot of copies of the exact
same error message.  The fix is to recompile PIC.  You don't need more
than one error message to figure this out.

>  Since none was attached to this change of yours, is there a test case (as
> one obviously should) already present in the LD test suite that covers
> this error?  If so, then I can start from there and provide you with a
> quick change to show you what I mean.

There is a testcase in the email.  There isn't one in the ld testsuite
because I was pressed for time.

I don't see how this helps me.  I already know how to fix it
correctly.  I just don't have time to do that.  I can put finishing
this on my to do list, but it may be a very long wait before I have
time to work on this again.  Unless maybe I can get someone else
inside SiFive to work on this, we do have a new guy that is doing some
binutils work that might be able to help.

Jim