VASP with GCC/gfortran on Linux AlphaServer

[lahaye]

A few messages back I was struggling with the compilation of VASP
on a Linux AlphaServer system. Finally I succeeded. To prevent others
from reinventing the whieel, just for the record, this is what I needed:

Use an up-to-date version of GCC (4.1.1 or newer).
In the Makefiles, use:

Code: Select all

FC=gfortran
CPP_ =  [...] | cpp -P -C -traditional-cpp >$*.f
FFLAGS = -O -mfp-trap-mode=su -ffree-form

Alternatively, you can use "-mieee" instead of "-mfp-trap-mode=su".

The "-m" flag prevents a runtime underflow SIGSEGV.
Hence, all supporting libraries (BLAS, LAPACK etc.) should be
compiled with the same "-m" flag (either the fp-trap-mode or
ieee), otherwise the executable will SIGSEGV when calling a
library routine.

Rob.