Re: Static call dependency on libelf version?

From: Mark Wielaard
Date: Tue Sep 15 2020 - 19:22:08 EST


Hi Josh,

On Tue, 2020-09-15 at 09:17 -0500, Josh Poimboeuf wrote:
> On Tue, Sep 15, 2020 at 01:24:17PM +0200, Mark Wielaard wrote:
> > But all this is for ancient versions of elfutils libelf. So it is hard
> > to say and my memory might be failing. If someone can confirm 0.158
> > (which is 6 years old) works fine I would pick that as minimum version,
> > otherwise simply go with 0.168 which is 4 years old and should be on
> > most systems by now.
>
> I just discovered elf_version(), I assume that would allow us to check
> and enforce the libelf version?

No, sorry. That is for the ELF file format version, which is and has
always been version 1 (and I suspect it will be for the next 20
years).

There is /usr/include/elfutils/version.h which provides a
_ELFUTILS_PREREQ(major, minor) macro if you need something during
compile time.

Note that in theory libelf is a generic library (there are variants for
Solaris and BSD with which we try to be [source] compatible), but the
only actively maintained version is the elfutils one.

Cheers,

Mark