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From: Ada novice <shai.lesh@gmx.com>
Newsgroups: comp.lang.ada
Subject: Re: ANN: Ada 2005 Math Extensions 20120712
Date: Fri, 27 Jul 2012 12:23:47 -0700 (PDT)
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Date: 2012-07-27T12:23:47-07:00
List-Id: <comp.lang.ada>

After knowing that the lapack and blas libraries are functional on my linux system, I tried the new math extension package. I do not understand however how lapack and blas are called.

After issuing the command: $ gnatmake -p -P demo_extensions, I see further down the output these lines:

gnatbind -E -I- -x /home/work/ada/simon2012/test/.build/demo_extensions.ali
gnatlink /home/work/ada/simon2012/test/.build/demo_extensions.ali -g /home/work/ada/simon2012/lib/libgnat_math_extensions.a -Wl,-rpath,/usr/local/gnat-2012/lib/gcc/i686-pc-linux-gnu/4.5.4/adalib/ -llapack -lblas -o 

So the linker is calling -llpack and -lblas. 

When I execute $ ./demo_extensions, I do get a long list of outputs which end with the last example:

ZGGEV example at http://www.nag.co.uk/lapack-ex/node122.html

Eigenvalue( 1) = ( 3.00000E+00,-9.00000E+00)
...
...
...

as expected from the code

My question is at which stage -llpack and -lblas are called? The file demo_extensions.gpr does not have these "switches" in the linker section.

I would like to know what lapack and blas libraries are being called, and if I can switch to the ACML ones which also work well for other Ada programs.

Thanks,
YC