#
#  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/>.
#


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

# Compiler Settings
CFLAGS   := -DPLATFORM_DOS -Wall
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 include 3rdparty 3rdparty/pthreads/include

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

# Roo/E Dynamic Libraries
DYNS_EXE := stbimage.dyn
DYNS_SRC := $(shell find dyn/stbimage -name '*.c')
DYNS_OBJ := $(DYNS_SRC:%=$(OBJ)/%.o)
DYNS_LIB :=

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

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

FONTS := $(FNT)/vga4x8.fnt $(FNT)/vga8x8.fnt $(FNT)/vga8x14.fnt $(FNT)/vga8x16.fnt

# Wiring
FONT_PNGS := $(subst $(FNT),$(FIN),$(FONTS))
FONT_PNGS := $(subst .fnt,.png,$(FONTS_PNGS))
INC_FLAGS := $(addprefix -I,$(INC))
CFLAGS    += $(INC_FLAGS)

# 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) $(DYN)/$(DYNS_EXE)

.PHONY: linux
linux: $(FONTS)

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

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

$(FONTS) &: $(FIN)/vga4x8.png $(FIN)/vga4x8.png $(FIN)/vga4x8.png $(FIN)/vga4x8.png $(BIN)/$(FONT_ELF)
	cd $(BIN) && ./$(FONT_ELF)

# Roo/E Target
$(BIN)/$(ROOE_EXE): $(ROOE_OBJ) Makefile
	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
	mkdir -p $(dir $@)
	$(DXE3GEN) -o $@ $(MPGC_OBJ) -U $(LDFLAGS) $(MPGC_LIB)

# DYNS Target
$(DYN)/$(DYNS_EXE): $(DYNS_OBJ) Makefile
	mkdir -p $(dir $@)
	$(AR) rcs $(OBJ)/$(DYNS_EXE).a $(DYNS_OBJ)
	$(DXE3GEN) -o $@ -Y $@.a --whole-archive -U $(OBJ)/$(DYNS_EXE).a $(LDFLAGS) $(DYNS_LIB)
	mkdir -p $(SDK)
	mv $(DYN)/$(DYNS_EXE).a $(SDK)/.

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