[FFmpeg-devel] [PATCH 1/3] configure: Force mingw's ld to keep the reloc section

[Hendrik Leppkes]

On Fri, Mar 11, 2016 at 8:57 AM, Christophe Gisquet
<christophe.gisquet at gmail.com> wrote:
> Hi,
>
> 2016-03-10 19:57 GMT+01:00 Hendrik Leppkes <h.leppkes at gmail.com>:
>> This patch (the relocations part) broke debugging mingw-w64 ffmpeg
>> builds with gdb, you can't set breakpoints anymore when its applied.
>
> That issue prevented me to do anything interesting for ffmpeg since
> then, thinking it was a toolchain issue. I've lost considerable
> ffmpeg-time (and actual code) over it.
>
>> It should either be reverted or made dependent on
>> --enable/disable-debug (I would favor the first, honestly, since its a
>> rather ugly hack in itself).
>
> At the very least, that dependence is needed, yes.
>
>> Did the binutils/mingw guys ever comment anything useful on this issue?
>
> And does it still exist? And for which toolchain/binutils/mingw
> runtime/gdb version actually? There are like 3+ versions one can use
> (yours, msys2, tdm, msys1, ...)
>

Any mingw-w64 build with a not-ancient binutils should probably be affected.
I found several references to this on the mingw ML from 2013 (ignored
since then), and reports on the binutils bugzilla from 2014 (no
movement there either).

Someone even posted a patch on the binutils bugzilla that added a new
option to safely generate relocation information, but it was never
applied.

- Hendrik