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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Example Ada calling Gnu Scientific Library (GSL)
Date: Thu, 06 Apr 2017 08:30:02 +0100
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Date: 2017-04-06T08:30:02+01:00
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hreba <f_hreba@yahoo.com.br> writes:

> gcc test_integration.o -o test_integration
> /home/frank/Lib/Ada/Num/Tests/obj/integ_aux.o: In function
> `integ_aux__gsl_test__integration_qng':
> /home/frank/Lib/Ada/Num/src/gsl.adb:54: undefined reference to
> `gsl_integration_qng'
> collect2: error: ld returned 1 exit status
> gprbuild: link of test_integration.adb failed
>
> But in GSL_Raw/src/gsl_gsl_integration_h.ads the procedure
> gsl_integration_qng _is_ declared.
>
> Where might it have gone lost?

Hard to say, but running nm on gsl_gsl_integration_h.o might give a
clue. Most likely, I guess, is that that file contains the corresponding
symbol but decorated with a prefix derived from the package name? e.g.
gsl_gsl_integration_h__gsl_integration_qng