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Subject:	Re: cblas library missing in liblapack-devel
To:	cygwin AT cygwin DOT com
References:	<8a87d61e-5a47-2487-2abd-51a54e07a159 AT free DOT fr>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<5bc8ea62-357b-6e5c-b7a5-64635b86494d@gmail.com>
Date:	Thu, 1 Nov 2018 22:09:48 +0100
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Am 01.11.2018 um 20:54 schrieb Falk Tannhäuser:
> The package liblapack-devel (LAPACK library for linear algebra 
> operations, see 
> https://cygwin.com/cgi-bin2/package-cat.cgi?file=x86_64%2Fliblapack-devel%2Fliblapack-devel-3.8.0-1&grep=cblas) 
> 
> contains the header file usr/include/cblas.h (among others), library 
> files as usr/lib/libblas.a, usr/lib/liblapack.a etc. as well as the file
> usr/lib/pkgconfig/cblas.pc . The command `pkg-config --libs cblas` 
> returns "-lcblas". However, no library file libcblas.a is present, causing
> building of some software packages depending on this library to fail.

for historical cygwin package reason cblas is merged with blas,
they are both inside

/usr/lib/libblas.a
/usr/lib/libblas.dll.a

It seems I forgot to amend the cblas.pc to return "-lblas" when
it was added to the lapack package.

> Am I missing something during Cygwin installation?
> 
> Falk

I will amend at next release, as workaround you can
modify usr/lib/pkgconfig/cblas.pc manually

Regards
Marco


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