[Matlisp-devel] Patch for Matlisp with ATLAS from Debian (unstable) and SBCL on ia32(sse2)

[Max-Gerd R. <m.r...@gm...>]

Hello,

I have yesterday installed Matlisp on my system, and I'm very pleased
with it. The installation was really simple and judging from some first
tests, it seems to be just what I want. Thanks.


Then I've wanted to built it using the ATLAS libraries. I've tried
to achieve that with this call to configure:

 ./configure --with-lisp=sbcl --with-lisp-exec=sbcl --prefix=`pwd` --with-atlas="/usr/lib/sse2" 

(The desired libraries lie in /usrr/lib/sse2 on Debian.)

But the lapack library file of the Debian package atlas3-sse2-dev
is called liblapack_atlas.so not liblapack.so, so I changed that
in the ATLAS_LIBS variable in configure.in.

To have the libraries loaded on SBCL I've added some code
load-blas-&-lapack-libraries in lazy-loader.lisp.in. It's a bit longer
than on CMUCL as I have added code that extracts the library names from
the @ATLAS_LIBS@ string and the ATLAS directory from @ATLAS_DIR@, and
then loads the .so-files via sb-alien:load-shared-object.

I'm not exactly sure wheter this is the way to go.. At least it seems
to work, and even in a way that might probably work on other systems
than mine as well.

Other changes in the patch:
 - Changed the two definitions of ATLAS_P in configure.in
   from nil to "(or)" and from t to "(and)", respectively, so
   that one can use "#+@ATLAS_P@" in lib/lazy-loader.lisp.in,
   and it will also work for the "true" case.
 - "make distclean" will now also delete the files matlisp.mk,
   lib/lazy-loader.lisp, src/f77-mangling.lisp, and config.status,
   that are generated when calling configure.
 - Updated the paragraph on building Matlisp with ATLAS:
   When the ATLAS libraries have different names, the variable
   ATLAS_LIBS in configure.in should be changed, not the generated
   file lib/lazy-loader.lisp.

Bye,
Max

PS:
 This is Linux 2.6.15.1, ia32 (Pentium Mobile), SBCL 0.9.16.21,
 a Matlisp checkout of yesterday evening, atlas3-sse2-dev 3.6.0-20.6
 (Debian unstable), in the case someone is interested in this.

-- 
Max-Gerd Retzlaff <m.r...@gm...>       http://blog.matroid.org

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