Under an old Apache server on a SunBlade 1500 system running Solaris 10, I have written Perl cgi programs that in turn call Fortran programs via a system command. These programs work under an old (circa 2000) Apache server.

I would like to upgrade to Apache 2 (provided as part of the Solaris 10 distribution). When I run the same Perl cgi programs under the Apache 2 server (as opposed to the old Apache server), the Perl portions of the cgi programs work. Also they can successfully run, for example, 

@proglist = ("echo","hello, world!<br>");
system(@proglist);

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but under the Apache 2 server, the Perl cgi programs produce no output from, for example, 
@proglist = ("tolerance.test","$content","$conflev","$n");
system(@proglist);

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where tolerance.test is a Fortran executable in the cgi directory and the other values are inputs to the Fortran program.

The Fortran executable DOES produce output if I am running under the old Apache server.

I realize that it is possible that the problem lies with the two different httpd.conf files (for the Apache and Apache 2 servers) or with "permissions" or with something else. I haven't been able to identify the problem. Any suggestions?

An example of a working (under the old Apache server) web program with a link to the underlying Perl and Fortran code can be found at http://www1.fpl.fs.fed.us/conversion.html

In reply to cgi/perl/fortran web program by sverrill

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