[Wien] undefined function calls when linking to BLAS/LAPACK

[pieper at ifp.tuwien.ac.at]

> The linker options you have below point at both the ATLAS libs you compiled
> and at the slow, unoptimized liblapack_lapw.a located in <WIEN_ROOT>/SRC_lib.

True, I cheated there, since up to now I did not compile the full lapack with
ifort. Since ifort compiled code is not binary compatible with codes from other
fortran compilers I linked against the unoptimized lapack.

Anyway, my previous experience with ifc 6.0 indicates that you have to compile
the full lapack, not just the minimum version of ATLAS, and I seem to remember
that you even have to copy some routine from the Wien-provided lib to the
optimized archive. In the installation guide of some other package which also
depends on ATLAS + lapack I found the following description, which might be
helpfull:

   Complete lapack library is required when using ATLAS, see
     http://math-atlas.sourceforge.net/errata.html#completelp
   for instructions.
   Below follows basic steps for building ATLAS+LAPACK from scratch.
   In case of trouble, consult the documentation of the corresponding
   software.
   * Get and unpack
       http://www.netlib.org/lapack/lapack.tgz
     to /path/to/src/
   * Copy proper
       /path/to/src/LAPACK/INSTALL/make.inc.?????
     to
       /path/to/src/LAPACK/make.inc
   * Build LAPACK:
       cd /path/to/src/LAPACK
       make lapacklib    # On 400MHz PII it takes about 15min.
     that will create lapack_LINUX.a when using
     INSTALL/make.inc.LINUX, for example.
     If using Intel Fortran Compiler, see additional notes below.
   * Get the latest stable ATLAS sources from
       http://math-atlas.sourceforge.net/
     and unpack to /path/to/src/
   * Build ATLAS:
       cd /path/to/src/ATLAS
       make                          # Number of questions will be asked
       make install arch=Linux_PII   # This takes about 45min.
     where arch may vary (see the output of the previous command).
   * Make optimized LAPACK library:
       cd /path/to/src/ATLAS/lib/Linux_PII/
       mkdir tmp; cd tmp
       ar x ../liblapack.a
       cp /path/to/src/LAPACK/lapack_LINUX.a ../liblapack.a
       ar r ../liblapack.a *.o
       cd ..; rm -rf tmp
   * Move all lib*.a files from /path/to/src/ATLAS/lib/Linux_PII/,
     say, to /usr/local/lib/atlas.

> also, I just noticed a note on the ATLAS site that says order of libraries
> linked in is important (this does not solve my problem however)

Maybe this only solves problems you solved previously by putting the linker
options in twice?


Martin



-------------------------------------------------
This mail sent through IMP: http://horde.org/imp/