[Info-ingres] ESQL/C, building 32bit- programs on a 64bit linux and 64bit-ingres-installation

[Alex Koppold]

We want to upgrade our development-, production- and database- servers
step-by-step from 32bit linux to 64bit linux systems (both centos).

In this environment we only use the database through our own ESQL/C- and
ESQL/CPP- programs and through the vnodes that were created on every system
with ingres-netutil.

There will be a mix of 32bit- and 64-bit machines in our environemt for
some time, and we will have to build 32bit-programs on the new
64bit-machine.  We are currently using Ingres 9.2 from the 32bit-Installer
on the database- and production-servers. When we install Ingres 9.2 from
the 64bit-Installer on the new development-machine, and build/link our
programs there with the gcc -m32- flag, will they work on the 32bit-
production servers and with the old database-server? 

I.e. is there a flag for the ESQL/C-prepocessor we have to set or are there
other things we have to consider?