Re: [gentoo-user] Compile program with older libraries

[Marko Košmerl]

I was able to find suitable gentoo stage 3 tarball:
http://88.191.254.16/gentoo/releases/x86/2007.0/stages/

Chrooted, compiled the source and tried to run binary it in old system. And
it worked!

On Fri, May 25, 2012 at 12:55 PM, Joshua Murphy <poisonbl@×××××.com> wrote:

> On Thu, May 24, 2012 at 9:15 AM, Marko Košmerl <marko06@×××××.com> wrote:
> > Hi!
> >
> > I have some program which I am using in a thin client  which has Gentoo
> > stage 3 root fs (kernel 2.6.39.4),
> > lets call it system A.
> > I've also compiled that program chroot-ed in this stage 3 fs from my
> > personal computer.
> >
> > I have an other thin clients which have older system (B) on it which is
> > older linux kernel 2.6.16.27.
> > Library version which are needed are of course different and for that
> reason
> > my program
> > can not be run in this sistem.
> >
> > System A:
> > Linux redondo 2.6.39.4 #18 Mon Mar 19 13:14:32 CET 2012 i586 i586 i386
> > GNU/Linux
> > /lib/libc-2.12.2.so
> > gcc version 4.0.3
> >
> > System B:
> > Linux carlos  2.6.16.27 #1 Sun Mar 25 11:09:40 CEST 2007 i586 i586 i386
> > GNU/Linux
> > /lib/libc-2.3.6.so
> > gcc version 4.0.3
> >
> > Shared libraries that my binary uses are (in system A):
> > linux-gate.so.1 =>  (0xffffe000)
> > libpthread.so.0 => /lib/libpthread.so.0 (0xf76d6000)
> > libuuid.so.1 => /lib/libuuid.so.1 (0xf76d1000)
> > libstdc++.so.6 => /usr/lib/gcc/i486-pc-linux-gnu/4.4.5/libstdc++.so.6
> > (0xf75da000)
> > libm.so.6 => /lib/libm.so.6 (0xf75b2000)
> > libc.so.6 => /lib/libc.so.6 (0xf7468000)
> > /lib/ld-linux.so.2 (0xf76f3000)
> > libgcc_s.so.1 => /usr/lib/gcc/i486-pc-linux-gnu/4.4.5/libgcc_s.so.1
> > (0xf7449000)
> >
> > If i try to compile my program using '-static' directive, I still have a
> > problem with 4 functions:
> > -initgroups,
> > -getpwnam,
> > -getaddrinfo,
> > -gethostbyname.
> >
> > If I got that right, they use functions which are located in NSS shared
> > libraries.
> >
> > I am looking for a way of compiling my program so that I can run it in
> > system B.
> > I have libraries available from system B and that is all that I have.
> >
> > I need help on getting this done.
> > I guess gcc versions are the same and as well libgcc_s.so.1 shared
> library.
> >
> > My questions are:
> > Can I pull those libraries from system B and use it in compilatin
> process?
> > Would that work?
> > I would still need to get include source files of that version, right?
> > Is there some archive site where I can find so old version of linux
> kernel
> > source?
> > One thing that pops in to my mind is also trying to find gentoo stage 3
> > tarball of the kernel version 2.6.16.27
> > and compile the program there...I tried to search that but no luck in
> > that...
> >
> > Any help would be welcomed!
>
> Well, you could use a chroot on system A to build it against an older
> copy of the library. I can't find a stage3 with that range of glibc,
> though if you can still track down sources to piece together a
> toolchain, LFS 6.2 [1] is from right around that time frame (around
> '06-'07). If anyone has a 2007.1 range stage3 laying around, though,
> all the hard work's already done for setting up a perfect chroot as
> long as it plays well with a newer kernel (or if you can do the build
> in said chroot on system B), I've had issues with a too-new set of
> libraries on older kernels more than once, not sure I've tried the
> other direction.
>
> [1] http://www.linuxfromscratch.org/lfs/view/6.2
>
> --
> Poison [BLX]
> Joshua M. Murphy
>
>