On Tue, 2018-05-15 at 21:39 +0200, Freddie Chopin wrote:
> On Fri, 2018-05-11 at 18:51 +0200, Richard Biener wrote:
> > As to a workaround for the ld bug you can try keeping all .debug_*
> > sections. IIRC 2.30 has the bug fixed (on the branch).
>
> Indeed - "keeping" all the debug sections is a viable alternative.
> I've
> found out that it is enough to "keep" just these:
>
> /* DWARF 2 */
> .debug_info 0 : { KEEP(*(.debug_info .gnu.linkonce.wi.*)); }
> ...
> .debug_frame 0 : { KEEP(*(.debug_frame)); }
>
> I have to check whether debugging something like that is actually
> possible (; Thanks for the workaround!
Nope, sent it too fast... With these two (three) sections "kept" --gc-
sections stops working and the executable I get is almost identical to
the case when I have no --gc-sections at all:
- lto + --gc-sections, sections "kept" - 133504 ROM + 4196 RAM
- lto + --gc-sections, sections not "kept" (causes previously mentioned
errors) - 120288 ROM + 3676 RAM
- lto, sections not "kept" - 133812 ROM + 4220 RAM
So it seems I have to patiently wait for new binutils if I would like
to use LTO (;
Regards,
FCh
