[more info] Re: Problems linking sshd to PAM or shadow libraries

["Thien Vu" <thien_vu@hotmail.com>]

I have followed a couple suggestions and found out that the problem might
not be with the openssh package directly because:

1) the Makefile is correctly created, specifically PAM is detected and put
into the LIBPAM variable in the Makefile.
2) when the actual sshd binary is compiled I see the -lpam on the final line
for linking (but is not actually linked according to ldd)

Does this suggest a broken gcc or a broken ld? This type of problem is
getting near the upper boundary of my problem solving skills, but a few
pointers on where I should go from here would be great. Again, only the PAM
libraries are the specific ones affected by this problem, the other dynamic
libraries linking into sshd are just fine. I have also tried re-installing
the PAM libraries and other PAM-enabled applications just work fine.

Thien

----- Original Message -----
From: "Thien Vu" <thien_vu@hotmail.com>
To: <linuxmanagers@linuxmanagers.org>
Sent: Monday, October 21, 2002 7:43 PM
Subject: Problems linking sshd to PAM or shadow libraries


> Hi,
>
> I am having a wierd problem where I cannot compile OpenSSH with support
for
> PAM or shadow passwords. I have other programs that have linked to PAM
just
> fine (shadow, fcron, etc.). I have PAM and shadow passwords installed and
> have enabled md5 passwords. OpenSSH is the only program that I am having
> troubles with. I am using the standard 'configure, make, make install' but
> when I run an 'ldd sshd' the libraries are not linked. I have tried the
> following configure commands:
>
> 1) ./configure \
>     --prefix=/usr \
>     --sysconfdir=/etc/ssh \
>     --libexecdir=/usr/sbin \
>     --with-pam \
>     --without-shadow \
>     --without-md5-passwords
> 2) ./configure \
>     --prefix=/usr \
>     --sysconfdir=/etc/ssh \
>     --libexecdir=/usr/sbin \
>     --without-pam \
>     --with-shadow \
>     --with-md5-passwords
> 3) LIBS="-lpam" ./configure .... (from #1)
> 4) LIBS="-lshadow" ./configure ..... (from #2)
>
> The 'make && make install' steps complete correctly, but when I try to ssh
> into my machine, it always rejects my password. It doesn't matter if I
have
> PAM or shadow enabled. The one thing to note in the /var/log/messages I
get
> errors saying the my /lib/security/pam_(nologin, warn, etc) modules are
> flawed, but I have also re-installed PAM successfully. I then tried to
> reinstall OpenSSH, but it still fails to link to libpam.
>
> ---- /var/log/messages ----
> Oct 15 13:08:38 lisa sshd[2031]: PAM unable to
> dlopen(/lib/security/pam_nologin.so)
> Oct 15 13:08:38 lisa sshd[2031]: PAM [dlerror:
/lib/security/pam_nologin.so:
> undefined symbol: pam_get_user]
> Oct 15 13:08:38 lisa sshd[2031]: PAM adding faulty module:
> /lib/security/pam_nologin.so
> Oct 15 13:08:38 lisa sshd[2031]: PAM unable to
> dlopen(/lib/security/pam_env.so)
> Oct 15 13:08:38 lisa sshd[2031]: PAM [dlerror: /lib/security/pam_env.so:
> undefined symbol: pam_putenv]
> Oct 15 13:08:38 lisa sshd[2031]: PAM adding faulty module:
> /lib/security/pam_env.so
> Oct 15 13:08:38 lisa sshd[2031]: PAM unable to
> dlopen(/lib/security/pam_unix.so)
> Oct 15 13:08:38 lisa sshd[2031]: PAM [dlerror: /lib/security/pam_unix.so:
> undefined symbol: pam_get_user]
> ....
> --- end ----
>
> Some other info: Gcc-3.1.1, glibc-2.2.5 (patched), PAM 0.76, shadow 4.0.3,
> OpenSSH 3.5p1 (but it doesn't matter which version, it still fails to link
> with 3.4p1)
>
> Thanks for any help
>
> Thien
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