#
#  Roo/E, the Kangaroo Punch Portable GUI Toolkit
#  Copyright (C) 2026 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/>.
#


# This Makefile is terrible.  I have no idea what I'm doing.


# Tools
CC       := gcc
AR       := ar
DXE3GEN  := dxe3gen
EXE2COFF := exe2coff

# Compiler Settings
override CFLAGS   += -Wall -MD
override LDFLAGS  +=

# Output Directories
OBJ := obj
BIN := bin
DYN := $(BIN)/dyn
APP := $(BIN)/app
SDK := $(BIN)/sdk
FNT := $(BIN)/fonts
FIN := font/in

# Include Paths
INC := include 3rdparty 3rdparty/pthreads/include roo_e

# Use MEMWATCH?
ifneq (,$(findstring MEMWATCH,$(CFLAGS)))
	MEMWATCH_SRC := 3rdparty/memwatch/memwatch.c
	MEMWATCH_OBJ := $(OBJ)/$(MEMWATCH_SRC).o
	INC += 3rdparty/memwatch
else
	MEMWATCH_SRC :=
	MEMWATCH_OBJ :=
endif

# Font Compiler Source and Target - NOTE: This is a Linux binary!
FONT_ELF := font
FONT_SRC := $(shell find font/src -name '*.c') $(MEMWATCH_SRC)
FONT_OBJ := $(FONT_SRC:%=$(OBJ)/%.o)
FONT_LIB := -lm

# Roo/E Source and Target
ROOE_EXE := roo_e.exe
ROOE_SRC := $(shell find roo_e -name '*.c') $(MEMWATCH_SRC)
ROOE_OBJ := $(ROOE_SRC:%=$(OBJ)/%.o)
ROOE_LIB := 3rdparty/pthreads/lib/libgthreads.a -lgcc -lm

# MultiPlayer Game Client
MPGC_EXE := kpsmpgc.app
MPGC_SRC := $(shell find kpsmpgc -name '*.c') $(MEMWATCH_SRC)
MPGC_OBJ := $(MPGC_SRC:%=$(OBJ)/%.o)
MPGC_LIB :=

DYNS  := kpssurf kpsplatf stbimage
FONTS := vga4x8 vga8x8 vga8x14 vga8x16

# Wiring
override CFLAGS += $(INC_FLAGS)
INC_FLAGS  := $(addprefix -I,$(INC)) $(foreach DIR,$(DYNS),-Idyn/$(DIR))
APP_OBJS   := $(ROOE_OBJ) $(MPGC_OBJ)
FONTS      := $(addprefix $(FNT)/,$(addsuffix .fnt,$(FONTS)))
FONT_PNGS  := $(subst .fnt,.png,$(subst $(FNT),$(FIN),$(FONTS)))
DYN_FILES  := $(foreach DIR,$(DYNS),$(DYN)/$(DIR).dyn)
DYN_SOURCE := $(foreach DIR,$(DYNS),$(shell find dyn/$(DIR) -name '*.c' -or -name '*.h'))

# Force User to Run This Using Toolchains
.PHONY: use_build_script
use_build_script:
	@echo "Use build.sh to cross-compile, not make."

# Build Everything
.PHONY: dos
dos: $(BIN)/$(ROOE_EXE) $(APP)/$(MPGC_EXE) $(DYN_FILES) sdk_extra

.PHONY: linux
linux: $(FONTS)

# Remove Everything
.PHONY: clean
clean:
	rm -rf $(OBJ) $(BIN)

# Font Compiler Target
$(BIN)/$(FONT_ELF): $(FONT_OBJ) Makefile
	@echo "\n---------- $@"
	mkdir -p $(dir $@) $(BIN)/fonts
	$(CC) $(FONT_OBJ) -o $@ $(LDFLAGS) $(FONT_LIB)

$(FONTS) &: $(FONT_PNGS) $(BIN)/$(FONT_ELF)
	cd $(BIN) && ./$(FONT_ELF)

# Roo/E Target
$(BIN)/$(ROOE_EXE): $(ROOE_OBJ) Makefile
	@echo "\n---------- $@"
	mkdir -p $(dir $@)
	$(CC) $(ROOE_OBJ) -o $@ $(LDFLAGS) $(ROOE_LIB)
	# Embed the DPMI Server
	$(EXE2COFF) $(BIN)/$(ROOE_EXE)
	cat 3rdparty/CWSDPMI/CWSDSTUB.EXE $(basename $(BIN)/$(ROOE_EXE)) > $(BIN)/$(ROOE_EXE)
	rm $(basename $(BIN)/$(ROOE_EXE))

# MPGC Target
$(APP)/$(MPGC_EXE): $(MPGC_OBJ) Makefile
	@echo "\n---------- $@"
	mkdir -p $(dir $@)
	$(DXE3GEN) -o $@ $(MPGC_OBJ) -U $(LDFLAGS) $(MPGC_LIB)

# DYN Targets - This is NOT how make should be used.
.PHONY: dyns
$(DYN_FILES): $(DYN_SOURCE) Makefile
	@echo "\n---------- $@"
	mkdir -p $(DYN) $(OBJ)/dyn/$(basename $(notdir $@)) $(SDK)/lib $(SDK)/include
	$(foreach CFILE,$(shell find dyn/$(basename $(notdir $@)) -name '*.c'),$(CC) $(CFLAGS) -o $(OBJ)/dyn/$(basename $(notdir $@))/$(subst dyn/$(basename $(notdir $@))/,,$(CFILE).o) -c $(CFILE) && ) true
	$(AR) rcs $(OBJ)/dyn/$(basename $(notdir $@)).a $(OBJ)/dyn/$(basename $(notdir $@))/*.o  $(MEMWATCH_OBJ)
	$(DXE3GEN) -o $@ -Y $@.a --whole-archive -U $(OBJ)/dyn/$(basename $(notdir $@)).a $(LDFLAGS)
	mv $@.a $(SDK)/lib/.
	if [ ! -z "$(shell find dyn/$(basename $(notdir $@)) -name '*.h')" ]; then cp $(shell find dyn/$(basename $(notdir $@)) -name '*.h') $(SDK)/include/.; fi

# Extra SDK Files
.PHONEY: sdk_extra
sdk_extra: 3rdparty/stbds.h 3rdparty/stbimage.h Makefile
	cp 3rdparty/stbds.h 3rdparty/stbimage.h ${SDK}/include/.
	cp roo_e/*.h ${SDK}/include/.

# Build C Files
$(OBJ)/%.c.o: %.c
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -c $< -o $@

# Track Header Changes in APPs and Roo/E
-include $(APP_OBJS:.o=.d)