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# ------------------------------------------------------------------------------
# Author: J. Henrichs, Bureau of Meteorology
# Modifications: A. R. Porter, STFC Daresbury Laboratory

# The compiler to use may be specified via the F90 and F90FLAGS
# environment variables. To use the NVIDIA compiler and enable
# openacc compilation with managed memory, use:
#
# export F90=nvfortran
# export F90FLAGS="-acc=gpu -Minfo=all -gpu=managed"

PSYROOT=../../..

include $(PSYROOT)/examples/common.mk

GENERATED_FILES = *.o *.mod $(EXEC) main_alg.f90 main_psy.f90 \
                  testkern_w0_kernel_0_mod.f90

F90 ?= gfortran
F90FLAGS ?= -Wall -g

OBJ = main_psy.o main_alg.o testkern_w0_kernel_0_mod.o

EXEC = example_openacc

LFRIC_DIR ?= $(PSYROOT)/src/psyclone/tests/test_files/dynamo0p3/infrastructure
LFRIC_NAME=lfric
LFRIC_LIB=$(LFRIC_DIR)/lib$(LFRIC_NAME).a

F90FLAGS += -I$(LFRIC_DIR)

.PHONY: transform compile run

# This makefile assumes that the transformed kernel will be named
# 'testkern_w0_kernel_0_mod.f90'. However, if it already exists then PSyclone
# will create 'testkern_..._1_mod.f90' so remove it first.
transform:
	rm -f testkern_w0_kernel_0_mod.f90
	${PSYCLONE} -dm -s ./acc_parallel_dm.py \
	-opsy main_psy.f90 -oalg main_alg.f90 main.x90

%_psy.f90: %.x90
	${PSYCLONE} -s ./acc_parallel_dm.py \
	-opsy $*_psy.f90 -oalg $*_alg.f90 $<

testkern_w0_kernel_0_mod.f90: main_psy.f90

# TODO #1724 - compilation currently fails because module name in use
# statement needs correcting following ACCRoutineTrans of Kernel.
compile: transform
	@echo "No compilation supported for lfric/eg14 due to #1724"


run: compile
	./$(EXEC)

$(EXEC): $(LFRIC_LIB) $(OBJ)
	$(F90) $(F90FLAGS) $(OBJ) -o $(EXEC) -L$(LFRIC_DIR) -l$(LFRIC_NAME)

$(LFRIC_LIB):
	$(MAKE) -C $(LFRIC_DIR)

# Dependencies
main_psy.o:	testkern_w0_kernel_0_mod.o
main_alg.o:	main_psy.o testkern_w0_kernel_0_mod.o

%.o: %.F90
	$(F90) $(F90FLAGS) -c $<

%.o: %.f90
	$(F90) $(F90FLAGS) -c $<

# Keep the generated psy and alg files
.precious: main_psy.f90 main_alg.f90

main_alg.f90: main_psy.f90

allclean: clean
	$(MAKE) -C $(LFRIC_DIR) allclean
