[FFmpeg-devel] [PATCH] configure: fix the bigendian test

[David Michael]

On Wed, Nov 11, 2020 at 5:18 PM Martin Storsjö <martin at martin.st> wrote:
> On Wed, 11 Nov 2020, David Michael wrote:
> > There are two issues:
> >
> > The unused global integer does not make it into the compiled object
> > file, so declare it static to correct this.
>
> Umm, what? That sounds entirely counterintuitive to me.
>
> If the global integer is non-static, it could be referred to by another
> object file, so the compiler cannot omit it from the generated object
> file. On the other side, if the variable is static, the compiler has full
> visibility over any possible use, and sees that nothing in the same object
> file refers to it, and thus can omit it if it's unused.

LTO removes it if it is not static.  It is always present when it is static.

Thanks.

David