[CentOS-devel] weird RPM dependency error; '/bin/sh' needed, but is provided

(This is a re-send; my first attempt was a day ago, but I did not
see this come through.  I may not have been subscribed to this list
at the time, which may have impacted things. So, I do apologize if
you eventually get a dup.)

First off, I have to admit that I'm uncertain if this is the
appropriate forum; I'd be happy for suggestions about where else
to look.

I'm doing this work on a stock install of CentOS-7-x86_64-Minimal-1810.iso,
with no updates.

I'm trying to create an RPM database from a custom set of RPMs.

One RPM ('openldap-ltb' from the LDAP Tool Box project (ltb-project.org)
has a dependency on '/bin/sh'. The bash RPM is demonstratedly
present, yet the the 'rpm' utility thinks this dependency is not
met.

I'm open to any advice as to how to progress.

It pretty easy to demonstrate what's going wrong, rather than trying
to describe it.

Straightforward to reproduce:

Here, I collect the misc bits from the net:

  $ wget --quiet http://mirrors.mit.edu/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1810.iso
  $ wget --quiet http://mirrors.mit.edu/centos/7/os/x86_64/Packages/libtool-ltdl-2.4.2-22.el7_3.x86_64.rpm
  $ wget --quiet https://ltb-project.org/archives/berkeleydb-ltb-4.6.21.NC-4.el7.patch4.x86_64.rpm
  $ wget --quiet https://ltb-project.org/archives/openldap-ltb-2.4.47-1.el7.x86_64.rpm

Now, I try to make an RPM database of these packages. The last step fails
with an unmet dependency:

  $ sudo mount ~/CentOS-7-x86_64-Minimal-1810.iso -r -t iso9660 -o loop /mnt
  $ mkdir -p ~/local_rpm_db
  $ rpm --initdb --dbpath ~/local_rpm_db
  $ rpm --justdb --ignoresize --dbpath ~/local_rpm_db -Uvh /mnt/Packages/*.rpm *.rpm
  warning: /mnt/cdrom/Packages/acl-2.2.51-14.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
  warning: berkeleydb-ltb-4.6.21.NC-4.el7.patch4.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 6d45bfc5: NOKEY
  error: Failed dependencies:
        /bin/sh is needed by openldap-ltb-2.4.47-1.el7.x86_64

Which is weird, as the 'bash' RPM is clearly part of the set, and 'provides'
the needed feature:

  $ rpm -q -provides -p /mnt/Packages/bash-4.2.46-31.el7.x86_64.rpm | egrep 'sh$'
  /bin/bash
  /bin/sh

Further, it's not among the list of files in the payload of the RPM:

  $ rpm -q -l -p /mnt/Packages/bash-4.2.46-31.el7.x86_64.rpm | egrep 'sh$'
  /usr/bin/bash
  /usr/bin/sh

These tactics did work with the related bits for CentOS 6.

Here are some details of my environment; I'm happy to provide more, if
anyone has any questions:

  $ cat /etc/redhat-release
  CentOS Linux release 7.6.1810 (Core)
  $ rpm -qf /usr/bin/rpm
  rpm-4.11.3-35.el7.x86_64

-- 
Brian Reichert				<reichert at numachi.com>
BSD admin/developer at large