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ax_lapack

Synopsis

AX_LAPACK([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])

Description

This macro looks for a library that implements the LAPACK linear-algebra interface (see http://www.netlib.org/lapack/). On success, it sets the LAPACK_LIBS output variable to hold the requisite library linkages.

To link with LAPACK, you should link with:

  $LAPACK_LIBS $BLAS_LIBS $LIBS $FLIBS

in that order. BLAS_LIBS is the output variable of the AX_BLAS macro, called automatically. FLIBS is the output variable of the AC_F77_LIBRARY_LDFLAGS macro (called if necessary by AX_BLAS), 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.

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.

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.

Source Code

Download the latest version of ax_lapack.m4 or browse the macro’s revision history.

License

Copyright © 2009 Steven G. Johnson stevenj@alum.mit.edu

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.

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.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

As a special exception, the respective Autoconf Macro’s copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts, even though portions of the text of the Macro appear in them. The GNU General Public License (GPL) does govern all other use of the material that constitutes the Autoconf Macro.

This special exception to the GPL applies to versions of the Autoconf Macro released by the Autoconf Archive. When you make and distribute a modified version of the Autoconf Macro, you may extend this special exception to the GPL to apply to your modified version as well.


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