On AIX:
-------
F77=xlf_r
FC=xlf95_r
CC=xlC
CXX=xlC

On Sun:
-------
A setup known to work (2005):

export CC=mpcc
export CXX=mpCC
export FC=f90
export F77=f77

Optimization:
CFLAGS="-fast"
FCFLAGS="-fast"
FFLAGS="-fast"
CXXFLAGS="-fast"


Linux (g95):
------------

FC=g95
F77=g77

Optimization:
CFLAGS="-O3"
FCFLAGS="-O3"
FFLAGS="-O3"
CXXFLAGS="-O3"

Linux (ifort):
--------------

FC=ifort
F77=ifort

Optimization:
CFLAGS="-O3"
FCFLAGS="-O3"
FFLAGS="-O3"
CXXFLAGS="-O3"


