#
#  Roo/E, the Kangaroo Punch Portable GUI Toolkit
#  Copyright (C) 2022 Scott Duensing
#
#  http://kangaroopunch.com
#
#
#  This file is part of Roo/E.
#
#  Roo/E is free software: you can redistribute it and/or modify it under the
#  terms of the GNU Affero General Public License as published by the Free
#  Software Foundation, either version 3 of the License, or (at your option)
#  any later version.
#
#  Roo/E is distributed in the hope that it will be useful, but WITHOUT ANY
#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
#  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
#  details.
#
#  You should have received a copy of the GNU Affero General Public License
#  along with Roo/E. If not, see <https://www.gnu.org/licenses/>.
#

BACKEND=DJGPP
#BACKEND=GRX

# General
CC			= gcc
LD			= gcc
RM			= rm -f
RMDIR		= rm -rf
INSTALL		= install
DEBUG		= -g

## CHANGE THIS ##
TARGET		= roo_e
SRCDIR		= .
OBJDIR		= obj
BINDIR		= bin
## CHANGE THIS ##

# CFLAGS, LDFLAGS, CPPFLAGS, PREFIX can be overriden on CLI
CFLAGS		:= $(DEBUG)
CFLAGS		+= -I$(SRCDIR)/shared -I$(SRCDIR)/roo_e/src
CPPFLAGS	:=
LDFLAGS		:=
LDLIBS		:=
PREFIX		:=
TARGET_ARCH :=

# DJGPP
ifeq ($(BACKEND),DJGPP)
$(info Building DJGPP Backend)
CFLAGS		+= -DBACKEND_DJGPP
endif

# GRX
ifeq ($(BACKEND),GRX)
$(info Building GRX Backend)
CFLAGS		+= -DBACKEND_GRX
CFLAGS		+= -I$(SRCDIR)/installed/dos/include
LDFLAGS		:= -L$(SRCDIR)/installed/dos/lib
LDLIBS		:= -lgrx20 -ljpeg -lpng -lz
TARGET		=  grx
endif

# Compiler Flags
ALL_CFLAGS		:= $(CFLAGS)
ALL_CFLAGS		+= -Wall -Ofast
#ALL_CFLAGS		+= -Wall -O0 -pg

# Preprocessor Flags
ALL_CPPFLAGS	:= $(CPPFLAGS)

# Linker Flags
ALL_LDFLAGS		:= $(LDFLAGS)
ALL_LDLIBS		:= $(LDLIBS) -lc


# Source, Binaries, Dependencies
SRC			:= $(shell find $(SRCDIR)/roo_e/src -type f -name '*.c')
SRC			+= $(shell find $(SRCDIR)/test/src -type f -name '*.c')
OBJ			:= $(patsubst $(SRCDIR)/%,$(OBJDIR)/%,$(SRC:.c=.o))
DEP			:= $(OBJ:.o=.d)
BIN			:= $(BINDIR)/$(TARGET)
-include $(DEP)

#$(info [${SRC}])
#$(info [${OBJ}])

# Verbosity Control, ala automake
V 			= 0

# Verbosity for CC
REAL_CC 	:= $(CC)
CC_0 		= @echo "CC $<"; $(REAL_CC)
CC_1 		= $(REAL_CC)
CC 			= $(CC_$(V))

# Verbosity for LD
REAL_LD 	:= $(LD)
LD_0 		= @echo "LD $@"; $(REAL_LD)
LD_1 		= $(REAL_LD)
LD 			= $(LD_$(V))

# Verbosity for RM
REAL_RM 	:= $(RM)
RM_0 		= @echo "Cleaning..."; $(REAL_RM)
RM_1 		= $(REAL_RM)
RM 			= $(RM_$(V))

# Verbosity for RMDIR
REAL_RMDIR 	:= $(RMDIR)
RMDIR_0 	= @$(REAL_RMDIR)
RMDIR_1 	= $(REAL_RMDIR)
RMDIR 		= $(RMDIR_$(V))



# Build Rules
.PHONY: clean
.DEFAULT_GOAL := all

all: setup $(BIN)
setup: dir
remake: clean all

dir:
	@mkdir -p $(OBJDIR)
	@mkdir -p $(BINDIR)


$(BIN): $(OBJ)
	$(LD) $(ALL_LDFLAGS) $^ $(ALL_LDLIBS) -o $@

$(OBJDIR)/%.o: $(SRCDIR)/%.c
	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) -c -MMD -MP -o $@ $<


install: $(BIN)
	$(INSTALL) -d $(PREFIX)/bin
	$(INSTALL) $(BIN) $(PREFIX)/bin

clean:
	$(RM) $(OBJ) $(DEP) $(BIN)
	$(RMDIR) $(OBJDIR) $(BINDIR) 2> /dev/null; true