--- MITgcm/model/inc/CPP_OPTIONS.h	2006/04/05 21:25:53	1.36
+++ MITgcm/model/inc/CPP_OPTIONS.h	2014/07/11 18:28:45	1.52
@@ -1,9 +1,21 @@
-C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.36 2006/04/05 21:25:53 mlosch Exp $
+C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.52 2014/07/11 18:28:45 jmc Exp $
 C $Name:  $
 
 #ifndef CPP_OPTIONS_H
 #define CPP_OPTIONS_H
 
+CBOP
+C !ROUTINE: CPP_OPTIONS.h
+C !INTERFACE:
+C #include "CPP_OPTIONS.h"
+
+C !DESCRIPTION:
+C *==================================================================*
+C | main CPP options file for the model:
+C | Control which optional features to compile in model/src code.
+C *==================================================================*
+CEOP
+
 C CPP flags controlling particular source code features
 
 C o Shortwave heating as extra term in external_forcing.F
@@ -19,6 +31,12 @@
 C o Include/exclude call to S/R CALC_DIFFUSIVITY
 #define INCLUDE_CALC_DIFFUSIVITY_CALL
 
+C o Allow full 3D specification of vertical diffusivity
+#undef ALLOW_3D_DIFFKR
+
+C o Allow latitudinally varying BryanLewis79 vertical diffusivity
+#undef ALLOW_BL79_LAT_VARY
+
 C o Include/exclude Implicit vertical advection code
 #define INCLUDE_IMPLVERTADV_CODE
 
@@ -28,9 +46,30 @@
 C o Include/exclude nonHydrostatic code
 #undef ALLOW_NONHYDROSTATIC
 
+C o Allow to account for heating due to friction (and momentum dissipation)
+#undef ALLOW_FRICTION_HEATING
+
+C o Allow mass source or sink of Fluid in the interior
+C   (3-D generalisation of oceanic real-fresh water flux)
+#undef ALLOW_ADDFLUID
+
 C o Include pressure loading code
 #define ATMOSPHERIC_LOADING
 
+C o exclude/allow external forcing-fields load
+C   this allows to read & do simple linear time interpolation of oceanic
+C   forcing fields, if no specific pkg (e.g., EXF) is used to compute them.
+#undef EXCLUDE_FFIELDS_LOAD
+
+C o Include/exclude balancing surface forcing fluxes code
+#undef ALLOW_BALANCE_FLUXES
+
+C o Include/exclude balancing surface forcing relaxation code
+#undef ALLOW_BALANCE_RELAX
+
+C o Include/exclude GM-like eddy stress in momentum code
+#undef ALLOW_EDDYPSI
+
 C o Use "Exact Convervation" of fluid in Free-Surface formulation
 C   so that d/dt(eta) is exactly equal to - Div.Transport
 #define EXACT_CONSERV
@@ -39,6 +78,15 @@
 C   this implies that surface thickness (hFactors) vary with time
 #undef NONLIN_FRSURF
 
+C o Include/exclude code for single reduction Conjugate-Gradient solver
+#define ALLOW_SRCG
+
+C o Choices for implicit solver routines solve_*diagonal.F
+C   The following has low memory footprint, but not suitable for AD
+#undef SOLVE_DIAGONAL_LOWMEMORY
+C   The following one suitable for AD but does not vectorize
+#undef SOLVE_DIAGONAL_KINNER
+
 C o ALLOW isotropic scaling of harmonic and bi-harmonic terms when
 C   using an locally isotropic spherical grid with (dlambda) x (dphi*cos(phi))
 C *only for use on a lat-lon grid*
@@ -63,22 +111,29 @@
 C#define COSINEMETH_III
 
 C o Use "OLD" UV discretisation near boundaries (*not* recommended)
-C   Note - only works with  #undef NO_SLIP_LATERAL  in calc_mom_rhs.F
+C   Note - only works with pkg/mom_fluxform and "no_slip_sides=.FALSE."
 C          because the old code did not have no-slip BCs
-#undef  OLD_ADV_BCS
+#undef OLD_ADV_BCS
+
+C o Use LONG.bin, LATG.bin, etc., initialization for ini_curviliear_grid.F
+C   Default is to use "new" grid files (OLD_GRID_IO undef) but OLD_GRID_IO
+C   is still useful with, e.g., single-domain curvilinear configurations.
+#undef OLD_GRID_IO
+
+C o Use old EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility)
+#undef USE_OLD_EXTERNAL_FORCING
 
 C o Execution environment support options
 #include "CPP_EEOPTIONS.h"
 
-C o Include/exclude code specific to the ECCO/SEALION version.
-C   AUTODIFF or EXF package.
-C   Currently controled by a single header file
-C   For this to work, PACKAGES_CONFIG.h needs to be included!
-cph#if (defined (ALLOW_AUTODIFF) || \
-cph     defined (ALLOW_ECCO) || \
-cph     defined (ALLOW_EXF))
-cph# include "ECCO_CPPOPTIONS.h"
-cph#endif
+C o Include/exclude single header file containing multiple packages options
+C   (AUTODIFF, COST, CTRL, ECCO, EXF ...) instead of the standard way where
+C   each of the above pkg get its own options from its specific option file.
+C   Although this method, inherited from ECCO setup, has been traditionally
+C   used for all adjoint built, work is in progress to allow to use the
+C   standard method also for adjoint built.
+c#ifdef PACKAGES_CONFIG_H
+c# include "ECCO_CPPOPTIONS.h"
+c#endif
 
 #endif /* CPP_OPTIONS_H */
-