Trying to install a freshly built RPM but it says it is dependent on a lib it should not be dependent on

Question

The package in question is samba-3.6.7. I've built the package successfully, but when trying to install it, it returns,

error: failed dependencies:
libtalloc.so.1 is needed by samba-3.6.7

I have no clue why this happens. libtalloc.so.1 is provided by my current samba package (which I am replacing), but this new samba provides libtalloc.so and libtalloc.so.2. Why is it still dependent on libtalloc.so.1 and how can I fix it?

Answer 1

Build your RPMs using mock. This builds within a chroot containing only the necessary packages for building the RPM and helps to prevent situations like this.

Answer 2

Edit the spec file and remove the requires entry for libtalloc.so.1. Rebuild and it should work. Having those metadata entries incorrect can be rather hard to track down.

Answer 3

libtalloc.so.1 was added by the automatic dependency generator which isn't infallible.

Another possibility is that something in your build actually linked against libtalloc.so.1 which is why build environments are important.

Assuming the automatic dependency generator is failing and you want to fix it you do so by overriding __perl_requires (depending on version of rpm) in your spec file:

source1: %{name}-filter-requires.sh
%define __perl_requires %{SOURCE1}

Then %{name}-filter-requires.sh is:

#!/bin/sh

/usr/lib/rpm/perl.req $* |\
  sed -e '/libtalloc.so.1/d'