On Mon, Jan 12, 2015 at 03:04:20PM -0700, Jeff Law wrote:
> On 01/12/15 14:51, Magnus Granberg wrote:
> >måndag 12 januari 2015 12.11.17 skrev H.J. Lu:
> >>On Mon, Jan 12, 2015 at 12:03 PM, Jeff Law <l...@redhat.com> wrote:
> >>>On 01/12/15 12:59, H.J. Lu wrote:
> >>>>I don't know if -pg will work PIE on any targets. For Linux/x86
> >>>>the choices of crt1.o are
> >>>>
> >>>>%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}
> >>>>
> >>>>-shared, -pg and -pie are mutually exclusive. Those crt1 files are
> >>>>only crt1 files provided by glibc. You can't even try -pg -pie on
> >>>>Linux without changing glibc.
> >>>
> >>>You're totally missing the point. What I care about is *why*.
> >>>
> >With -pg it use gcrt1.o object file and that file is not compile with -fPIC.
> >When you build a shared lib on x86_64 all the objects files need to be buiit
> >with -fPIC else you get a error like that one abow and it is the same
> >problems
> >when you build bin with -fPIE and linke with -pie.
> >Glibc do not provide one that is compile with -fPIC
> Is there some reason why glibc could not provide gcrt1.o compiled with
> -fPIC?
>
I opened a glibc bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=17836
and submitted a patch:
https://sourceware.org/ml/libc-alpha/2015-01/msg00284.html
H.J.
