Date: Sat, 16 Sep 1995 18:02:13 -0500 From: "Daniel M. Eischen" <deischen@iworks.InterWorks.org> To: elredmon@MIT.EDU, questions@FreeBSD.org Subject: Re: fortran Message-ID: <9509162302.AA02858@iworks.InterWorks.org>
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>I have never used FreeBSD before and I have a couple questions before I try to. >I use a very large fortran program and was wondering if the fortran available >with FreeBSD is a native fortran or if it is g77 or simply the use of f2c plus >gcc ? I hate to say it, but I'm using g77 right now for a project at work. G6777 is available as a package from FreeBSD 2.0.5 onward I believe. Just ftp it from the archive, pkg_add it, (make sure to add /usr/lib/libexec to your PATH) and you should be all set. A couple little nits, probably nothing to do with FreeBSD, but more with the GNU compiler... I found it rather hard to make C system calls from Fortran - I ended up writing C wrappers for every system call I needed to make from FORTRAN. This has to do with the paramter passing differences between C and FORTRAN. I also had a problem with the symbol names generated by G77 - they all had one or two extra underscores after them and I had to end the names of the C wrapper functions with underscores. Time was a constraint, so I didn't try to figure it out. I also could not get the linker (ld) to bind the object files together. Instead I used the G77 compiler to link and that worked fine! I have to give credit to the FreeBSD team. We've got a pretty decent size FOTRAN program built, running as a client, and communicating via TCP/IP to a server. The best part is that it compiles faster on a 486/50MHz FreeBSD machine (running X, MOTIF, networking, etc) than it does on an HP 9000/720. Hmm, I should see how fast they run. I'm not that familiar with FORTRAN, but if you have any other questions, we can take this offline, and I can try to answer any questions you have. Dan Eischen deischen@iworks.InterWorks.org
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