RPM %post dying - pthread, fork, execve

["David D. Hagood" <David Hagood aeroflex com>]

I have a problem with a program using librpm - when RPMs containing %post 
scriptlets are installed, the scriptlet dies. This does not happen when running 
rpm from the command line.

The problem *seems* to be related to pthreads, fork, and execve - the program is 
using pthreads, and librpm uses fork&execve to launch the shell. From what I've 
seen elsewhere, there seems to be a problem when using fork&execve in a pthreads 
environment.

Does anybody have any suggestions on how I could do one of the following:

Resolve the fork&execve problem
Gain control over libRPM to launch sub-shells with my own code (so that I could 
use something other than fork&execve)