# 
# *** SUB-MAKE ***
#
# this file is a sub-make
# which means this file
# should not be run on its
# own and should be called
# from the main make file

ASM ?=nasm
CC16 := $(HOME)/opt/ow/open-watcom-v2/rel/binl64/wcc
LD16 := $(HOME)/opt/ow/open-watcom-v2/rel/binl64/wlink

CFLAGS16 :=-4 -d3 -s -wx -ms -zl -zq
ASMFLAGS :=-f obj

ROOT_DIR ?= ../../..

BUILD_DIR ?= $(ROOT_DIR)/build
SRC_DIR ?= $(ROOT_DIR)/src

SRC_LOADER_DIR ?= $(SRC_DIR)/bootldr
SRC_STAGE2_DIR := $(SRC_LOADER_DIR)/2

BUILD_STAGE2_DIR := $(BUILD_DIR)/2

# sources
SOURCES_C := $(wildcard *.c)
SOURCES_ASM := $(wildcard *.asm)
# objects
OBJECTS_C := $(patsubst %.c, $(BUILD_STAGE2_DIR)/c/%.obj, $(SOURCES_C))
OBJECTS_ASM := $(patsubst %.asm, $(BUILD_STAGE2_DIR)/asm/%.obj, $(SOURCES_ASM))

$(BUILD_DIR)/stage2.bin: $(OBJECTS_C) $(OBJECTS_ASM)
	$(LD16) NAME $(BUILD_DIR)/stage2.bin FILE \{ $(OBJECTS_ASM) $(OBJECTS_C) \} OPTION MAP=$(BUILD_STAGE2_DIR)/stage2.map @linker.lnk

$(BUILD_STAGE2_DIR)/c/%.obj: %.c always
	$(CC16) $(CFLAGS16) -fo=$@ $<

$(BUILD_STAGE2_DIR)/asm/%.obj: %.asm always
	$(ASM) $(ASMFLAGS) -o $@ $<

.PHONY: always clean
always:
	mkdir -p $(BUILD_DIR)/2
	mkdir -p $(BUILD_DIR)/2/c
	mkdir -p $(BUILD_DIR)/2/asm

clean:
	rm -r $(BUILD_DIR)/c $(BUILD_DIR)/asm