> From: Davide Ceresoli <ceresoli@sissa.it>
>
> Notes for compiling lapack package:
> -----------------------------------
> If you download the lapack package from http://www.netlib.org and
> if you want to compile it by your own, be careful not to optimize
> the DLAMCH and SLAMCH routines, otherwise it may happen that your
> code runs into an infinite loop.
> The simplier way to achieve this, is to set the NOOPT variable in 
> the file make.inc which comes in the LAPACK directory.
> The NOOPT variable has to be set with your fortran compiler options
> without any optimization flag.
> Here's an example for the Intel compiler on Linux:
> 
> file LAPACK/make.inc:
> ...
> FORTRAN  = ifc
> OPTS     = -O2 -unroll -tpp6 -xiM -g -W0    # here you can optimize
> DRVOPTS  = $(OPTS)
> NOOPT    = -O0 -g -W0                       # <--- here not! (-O0)
> LOADER   = ifc
> LOADOPTS = -g -Vaxlib
> ...
> 
> -- 
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