######################################################################
#                            GNU MAKEFILE                            #
######################################################################
# There may be some trickery involved in this file; most of which is #
# hopefully explained sufficiently.  This makefile is unlikely to    #
# work with non-GNU make utilities.                                  #
#                                                                    #
######################################################################
SHELL = /bin/bash
# clear out suffix list
.SUFFIXES :
# declare suffixes allowed to be subject to implicit rules.
.SUFFIXES : .f .o .f90

current_version=4.0c
tarname=NH3-Plus


src = ./src/
build = ./obj/
bin = ./bin/

ldir = $(src)lib/
pdir = $(src)parser/
mdl = $(src)model/


# DEFINE THE PATH 

VPATH = $(src)
VPATH += $(ldir)
VPATH += $(pdir)
VPATH += $(mdl)


# extra dir 
extra_dirs = logs nnfits scans 
gincl = -I$(src) -I$(pdir) -I$(ldir) -I$(mdl)

# GFORTRAN COMPILER
FC := gfortran 
GFFLAGS = -O2 -fopenmp -fbackslash -fmax-errors=5 -Wall -Werror  
GFFLAGS += -std=legacy -cpp -J$(build)
GFFLAGS += $(gincl)
#GFFLAGS +=  -Wall -Wextra -Werror -Wno-error=integer-division -Wno-error=conversion \
           -Wno-error=intrinsic-shadow z
GLLAPCK = -llapack

DBGFFLAGS = -O0 -fcheck=bounds -fcheck=do -fcheck=mem -fcheck=pointer  -p -g -fsanitize=thread

#cGINCL = -I -I$(pdir) -I$(ldir)

GFFLAGS += $(GINCL)
GFFLAGS += $(GLLAPCK)
DBGFFLAGS += $(GLLAPCK)

#IFORT COMPILER

IFC := ifort 
IFFLAGS = -O3 -qopenmp -qmkl -fpp -stand f95 -warn all -warn noerrors \
         -fp-model precise -traceback -assume byterecl
IFFLAGS += -g -diag-disable=10448
DBGIFC  = -O0 -g -check all -traceback -fpp -warn all -fp-stack-check

LDFLAGS = -llapack

# CHOSE THE COMPILER
###########################
COMPILER = $(FC)

ifeq ($(COMPILER),IFC)
  FC = $(IFC)
  FFLAGS = $(IFFLAGS)
  DBGFLAGS = $(DBGIFC)
else
  #FC = $(FC)
  FFLAGS = $(GFFLAGS)
  DBGFLAGS = $(DBGFFLAGS)
endif
######################################################################
### Functions
######################################################################

# return 'true' if file $(1) exists, else return ''
file_exists = $(shell if [ -f $(1) ]; then echo "true"; fi)
# return 'true' if file $(1) doesn't exist, else return ''
file_lost = $(shell if [ ! -f $(1) ]; then echo "true"; fi)

######################################################################
### Objects
######################################################################

# Objects solely relying on ANN parameters
ann_objects = backprop.o ff_neunet.o neuron_types.o \
              axel.o nnmqo.o scans.o nnread.o
parameter_object = accuracy_constants.o nn_params.o io_parameters.o \
                 nn_common_param.o nndbg.o
data_obj = Phase_correction.o data_transform.o write_error.o
# Objects relying on both genetic & ANN params
genann_objects = geNNetic.o iNNterface.o puNNch.o \
                 mkNN.o error.o long_io.o parse_errors.o parser.o

# Objects depending on model
pln_objects = invariants_nh3.o nncoords_nh3.o fit_genetic.o pes_model.o \
              dipole_model.o nnadia_nh3.o


# Objects belonging to internal library
lib_objects = misc.o ran_gv.o choldc.o diag.o \
              qsort.o dmatrix.o imatrix.o strings.o ran.o \
              fileread.o keyread.o long_keyread.o

# Objects from hell; if it exists, don't compile it
hell_objects = $(ldir)random.o
hell_flags = -O3 -fopenmp -std=legacy

project_objects = $(ann_objects) $(data_obj) $(genann_objects) $(pln_objects)
objects = $(addprefix $(build),$(parameter_object) $(project_objects) $(lib_objects))

main = genANN

######################################################################
### Remaining include files
######################################################################

gen_include = keylist.incl errcat.incl

# Misc. files generated during compilation
trash = *__genmod* *~ *\# *.g .mod

$(main) : $(objects)
ifeq ($(call file_exists,$(hell_objects)),)
	$(MAKE) hell 
endif 
	$(FC) $(FFLAGS) $(hell_objects) $(objects) $(LDFLAGS) -o $(bin)$(main) 

$(build)%.o : %.f 
	$(FC) -c $(FFLAGS) $< -o $@
$(build)%.o : %.f90
	$(FC) -c $(FFLAGS) $< -o $@

$(hell_objects) : $(ldir)random.f
	$(FC) -c $(hell_flags) $< -o $@

# making 

.PHONY : clean dirs neat hell pyram_ANN all debug  
clean: 
	rm -rf $(build)*.o $(build)*.mod $(hell_objects) $(trash) $(bin)$(main)
#	$(RM) $(objects) $(hell_objects) $(trash) $(bin)/$(main)
dirs:
	@mkdir -p $(build) $(bin) $(extra_dirs)
neat:
	$(RM) -f $(TRASH)
hell : $(hell_objects)

debug: override FFLAGS += $(DBGFLAGS) 
debug: clean $(hell) $(main)
all : clean  hell $(main) pyram_ANN libdipole_surface.a