Re: g77 and MXUNIT

[Benjamin Joseph <benjo at u dot washington dot edu>]

To answer my own email, I just figured out the problem.  Hopefully I can 
explicitly explain it so if any other amatuers run into this problem it 
can be solved easily.

The problem was is that the libraries generated were installed into the 
/usr/local/lib and /usr/local/lib64 directories, instead of /usr/lib64 and 
/usr/lib/gcc/x86_64-redhat-linux/3.4.2/  .

So, all you need to do is copy /usr/local/lib64/libg2c* to the 
afformentioned directories and life is grand.

-Ben


On Wed, 29 Dec 2004, Benjamin Joseph wrote:

> So I have this problem, and I was wondering if anyone knew how to solve this. 
> My Fortran program compiles, but at run time I get an error message:
> --------------
> open: illegal unit number
> apparent state: unit 99 named FOO$099
> lately writing direct unformatted external IO
> --------------
>
> By googling, I found out that in OPEN statements the logical unit numbers are 
> by default limited from 1 to 99 (in gcc), and this program exceeds that 
> number (goes to 112 I think).  The solution for this seems to involve 
> recompiling gcc but with gcc/libf2c/libI77/fio.h changed so that
>
> #define MXUNIT 100   ------->  #define MXUNIT 1000
>
> or something bigger than 100, anyway.  Okay, so I do that, and I recompile 
> gcc:
>
> ../gcc-3.4.3/configure
> make -j 2 bootstrap
> su
> make install
>
> I then recompile my code and try to run it and there is no change, I get the 
> same error.  I'm not sure if my compiler options are correct, perhaps it is 
> not linking to the right libraries?  Btw the code works, but we've compiled 
> it before with the Intel Fortran compiler.  I've also made sure that any old 
> versions of g77 have been removed so that this new one is the only one there.
>
> Does anyone have any suggestions?
>
> I'm running a dual-processor opteron, FC3 x86_64.
>
> -Ben