Documentation about the Compaq Fortran compiler.
-assume byterecl: Necessary for the UIO routines:
specify that the length of a record is measured in bytes (and not in words).
-cpp: invoke the preprocessor on all source files
-inline speed -V: Force automatic inlining,
optimized for speed.
-O4: General optimization.
-Drhd_hyd_roe1d_l01=0: Optimization: Choose standard set of routines for
Roe solver.
See Sect. 3.7.
-DMSrad_raytas1: Optimization: choose non-default version
of SUBROUTINE raytas in file MSrad3D.F90.