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Re: SGI 6.5 and CALL_EXT Problem [message #15716 is a reply to message #15641]

Fri, 04 June 1999 00:00

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

rmlongfield@my-deja.com wrote:
>
> Hi all,
> I need help with something that used to work and now doesn't.
> My SGI O2 has just been upgraded to 6.5. Prior to this I have used
> CALL_EXTERNAL successfully with C and Fortran programs.
>

There are various reasons why a DSO failed to load. The simplest is that
IDL
really couldn't find it, either because it is incorrectly named or
because it
isn't on the run-time library search path. Another reason is that IDL
requires
the DSO to be built using the O32 ABI under IRIX. A third reason is that
it may have
undefined externals if you link against library which has changed
between OS
releases.

You can check for the first by copying the DSO to the directory where
you are
running IDL from, the current directory should be searched for DSOs.

You can check for the second reason by using the 'file' command:
% file idl_calc_pos.so
will tell you what type of library has been created.
IDL needs mips-2 dynamic libs. If it is a mips-3 dynamic lib it was
built using
the N32 ABI and will need to be re-compiled.

If the compiler defaults have changed this could happen. See the man
page for the
compiler and ABI(5) for more details. If the installation has changed
the compiler
defaults to N32 then you will need to compile and link with the -o32
option
added to the command line.

Finally, to check for undefined externals use the nm command. There will
be many
instances (e.g. any calls to routines in the C library). But if you
eliminate these
you should be able to find which external is not satisfied.

--
-----------------------------------------------------------
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523568, Fax : +44 (0)116 2523555

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[Message index]

		SGI 6.5 and CALL_EXT Problem By: rmlongfield on Thu, 03 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: rmlongfield on Mon, 07 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: Nigel Wade on Fri, 04 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: rmlongfield on Fri, 04 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: Liam Gumley on Thu, 03 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: Vapuser on Thu, 10 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: Nigel Wade on Mon, 14 June 1999 00:00
		Re: SGI 6.5 and CALL_EXT Problem By: rmlongfield on Fri, 11 June 1999 00:00

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