From: Tim Prince <n8tm@aol.com>
To: gcc-help@gcc.gnu.org
Subject: Re: linking qsort with gfortran
Date: Sat, 22 Dec 2012 12:15:00 -0000 [thread overview]
Message-ID: <50D5A44C.30909@aol.com> (raw)
In-Reply-To: <CE7946E5-B513-4380-B3C6-5BA2ED002FC9@mac.com>
On 12/21/2012 7:58 PM, dlr13@mac.com wrote:
> First, apologies if this question has been answered elsewhere or I am doing something really stupid. I have searched for several hours for a solution to my problem with no success.
>
> I am trying to do a GCC build of a mix of C and Fortran source that has been successfully compiled for many years with both the PGI and Intel compilers. I have one Fortran routine that calls "qsort", a sorting routine provided in most libraries. I know it is provided in the GCC libraries. However, because the call is from Fortran code, it will properly link with the library and I get this error:
>
> Undefined symbols for architecture x86_64:
> "_qsort_", referenced from:
>
> I understand that the trailing underscore is the problem, but I cannot use the "no-underscoring" compiler flags because the code also links to other libraries that do provide the underscore which then breaks everything else. I am using gfortran to do the linking though I get the same error with gcc. I am using version 4.8 currently but get the same error with 4.7. Everything is on OS X, 10.7.
>
> Any help would be greatly appreciated. Thank you.
>
> _____
> David
>
>
>
>
If there is no Fortran wrapper for qsort in your library you should be
able to call it via iso_c_binding. qsort isn't in a gcc library,
usually it's glibc, although I don't know mac specifics.
--
Tim Prince
next prev parent reply other threads:[~2012-12-22 12:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-22 0:58 dlr13
2012-12-22 12:15 ` Tim Prince [this message]
2012-12-22 14:43 ` Ángel González
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