Makefile

# Compiler, Linker and Assembler
CC=clang
CXX=clang++
ASM=clang++
LD=clang++

# Compiler, Assembler and Linker flags go here
CCFLAGS=-Wall -ffreestanding  -I include
CXXFLAGS+=CCFLAGS
LDFLAGS=
ASMFLAGS=-f bin

# Object and binary directories
SRCDIR=src
BINDIR=bin
OBJDIR=$(BINDIR)/obj

# Object files go here
OBJS=$(OBJDIR)/kernel.o

# Binaries go here
BIN=$(BINDIR)/kernel.bin $(BINDIR)/boot.bin

# Virtual Machines go here
VM=qemu-system-x86_64

# PHONY targets
.PHONY: bootstrap iso clean run

all: bootstrap $(OBJS) $(BIN)

# Compile C source files
$(OBJDIR)/%.o: $(SRCDIR)/%.c
	$(CC) -c $(CCFLAGS) -o $@ $<

# Compile C source files
$(OBJDIR)/%.o: $(SRCDIR)/%.cpp
	$(CXX) -c $(CCFLAGS) -o $@ $<

$(OBJDIR)/%.asm.o: $(SRCDIR)/%.asm
	$(ASM) $(ASMFLAGS) -o $@ $<

$(OBJDIR)/%.asm.o: $(SRCDIR)/%.s
	$(ASM) $(ASMFLAGS) -o $@ $<

$(BIN): $(OBJS)
	$(LD) $(LDFLAGS) -o $@ $<

bootstrap:
	mkdir -p bin/obj

run: all
	$(VM) bin/boot.bin

clean:
	rm -rf bin/*.bin obj/*