Re: unresolved reference __ctype_b

[Kathy Bieltz <kbieltz hal-pc org>]

Fred,

I encountered the same problem when I installed RHEL 3.0 and
then tried to rebuild my software.

The compat libs resolve the problem for statically linked libraries,
but not the dynamic libraries. I had some shared 3rd party libraries built
on RH 7.x that caused the build to fail with “unresolved reference 
__ctype_b” errors.

There are some work arounds which involve creating an object or define
that resolves the “unresolved reference __ctype_b” errors, but that 
introduces
problems that were prevented by removing __ctype_b in RHEL 3.0.

The software I was building was for commercial distribution and I couldn't
risk introducing those kinds of problems so I dropped back to RHEL 2.1
until such time as all the 3rd party libraries are available for RHEL 3.0.

Kathy Bieltz


Fred Magee wrote:

> Good afternoon.
>
> I am trying to rebuild a program after upgrading to RHEL WS 3.0 and 
> keep getting “unresolved reference __ctype_b” errors. performed a 
> clean install of RHEL and have not performed any of the updates 
> because the system is isolated from all network connections. The 
> “Knowledge Base” has only one hit that actually has “__ctype_b” in the 
> answer and it explains you can’t compile on RHEL 2.1 and link on 3.0. 
> I understand from googling that this is a problem with glibc. From 
> google I’ve tried adding /usr/lib/i386-redhat-linux7/include to my 
> makefile include path and /usr/lib/i386-redhat-linux7/lib to the 
> library path. This didn’t work so I added 
> /usr/lib/i386-redhat-linux7/lib to ld.so.conf and ran ldconfig also 
> without success. I have installed compat-glibc. Curiously, adding the 
> include and lib directories to the appropriate paths in the Makefile 
> fixed one of the two errors but not the other.
>
> Any ideas as to what I should try next will be gratefully appreciated.
>
> Happy April Fool’s Day
>
> Fred
>
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