Shall I deduce that:
1. It is possible to generate 32-bit code on a 64-bit machine
2. Not all 32-bit code, no matter where it was generated, will run on a 64-bit machine
I do not give up. From your answers I infer that running the CERNLIB installation procedure in a shell where linux32 has been invoked, like: # linux32 bash # ./start_cern
will NOT automatically produce 32-bit code. Am I right ? The workaround consists in splitting the provided installation procedure and manually change the compiler options.
Still, this is not the whole story .. sigh .. In fact the next step in the CERNLIB creation consist of generating the math functions tha rely on "blas" and "lapack". Here I'm quoting the CERNLIB installation guidelines at http://cernlib.web.cern.ch/cernlib/install/lapack3.html:
"... If successful, the libraries will be in $CERN_ROOT/lib. Failure is usually indicated in the end of the log files in $CERN_ROOT/build/log. Pawlib and some parts of mathlib depend on Lapack3, which can now be built as described here... "
Where "here" is a link to http://cernlib.web.cern.ch/cernlib/install/lapack3.html This latter site contains instructions for downloading and installing the linear algebra LAPACK.
Here is my point: I ALREADY have on my system both the native "blas" and "lapack" installed from SuSE DVD. But they are for x86_64 architecture. For the sake of consistency I need the equivalent two packages for 32-bit machines. No matter if I install the ones provided by CERN or from the rpm files that can be downloaded from http://rpmfind.net//linux/RPM/PLD/dists/ac/ready/i686/blas-3.0-30.i686.html I am VERY CONCERNED that the new blas and lapack will overwrite the existing one therefore messing up my system .... HELP ... PLEASE ! Is there a way tomake both 64- and 32-versions of blas and lapack coexist in the same system and then liknk the appropriate version ? IMHO, you should be able to run 32-bit code. The problem is with
On Sun, 16 Apr 2006 11:00:24 -0500 (CDT) Maura Edeweiss Monville <memonvil@artsci.wustl.edu> wrote: libraries. You can create 2 copies of the blas and lapack libraries. I happen to have a very large (over 1,000,000 lines of code) that I have ported to the 64-bit IA64 that happens to use both blas and lapack. This same code runs on an x86_64 box that currently has RHEL 3.0 with a 64-bit kernel. You should have on your system /lib - 32-bit lib /lib64 /usr/lib /usr/lib64 /usr/local/lib /usr/local/lib64 You should find that the blas and lapack 32-bit and 64-bit will coexist nicely. -- Jerry Feldman <gaf@blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9