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Autoconf Macro: acx_lapack
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<h1>
acx_lapack
</h1>
<h2>
SYNOPSIS
</h2>
<p class="indent" style="white-space:nowrap;">
<code>ACX_LAPACK([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])</code>
</p>
<h2>
DESCRIPTION
</h2>
<div class="indent">
<p>
This macro looks for a library that implements the LAPACK linear-algebra
interface (see <a href=
"http://www.netlib.org/lapack/">http://www.netlib.org/lapack/</a>). On
success, it sets the LAPACK_LIBS output variable to hold the requisite
library linkages.
</p>
<p>
To link with LAPACK, you should link with:
</p>
<pre>
$LAPACK_LIBS $BLAS_LIBS $LIBS $FLIBS
</pre>
<p>
in that order. BLAS_LIBS is the output variable of the <a href=
"acx_blas.html">ACX_BLAS</a> macro, called automatically. FLIBS is the
output variable of the AC_F77_LIBRARY_LDFLAGS macro (called if necessary by
<a href="acx_blas.html">ACX_BLAS</a>), and is sometimes necessary in order
to link with F77 libraries. Users will also need to use AC_F77_DUMMY_MAIN
(see the autoconf manual), for the same reason.
</p>
<p>
The user may also use --with-lapack=<lib> in order to use some
specific LAPACK library <lib>. In order to link successfully,
however, be aware that you will probably need to use the same Fortran
compiler (which can be set via the F77 env. var.) as was used to compile
the LAPACK and BLAS libraries.
</p>
<p>
ACTION-IF-FOUND is a list of shell commands to run if a LAPACK library is
found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it is not
found. If ACTION-IF-FOUND is not specified, the default action will define
HAVE_LAPACK.
</p>
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<h2>
SOURCE CODE
</h2>
<p class="indent">
<a href=
"http://autoconf-archive.cryp.to/acx_lapack.m4">http://autoconf-archive.cryp.to/acx_lapack.m4</a>
</p>
<h2>
LICENSE
</h2>
<div class="indent">
<p style="white-space:nowrap;">
Copyright © 2009 Steven G. Johnson <stevenj@alum.mit.edu>
</p>
<p>
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
</p>
<p>
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
</p>
<p>
You should have received a copy of the GNU General Public License along
with this program. If not, see <<a href=
"http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>>.
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