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# HOST ARCH
ARCH=i686-aleksa-
# GCC CROSS COMPILER
export CC=$(ARCH)gcc
export AS=$(ARCH)as
WARNINGS := -Wall -Wextra -pedantic -Wshadow -Wpointer-arith -Wcast-align \
-Wwrite-strings -Wmissing-prototypes -Wmissing-declarations \
-Wredundant-decls -Wnested-externs -Winline -Wno-long-long \
-Wconversion -Wstrict-prototypes
export CFLAGS=-std=gnu99 -O3 $(WARNINGS) -ffreestanding -fstack-protector-all
# TOOLS
export MKDIR=mkdir -p
export RM=rm -rf
export CP=cp -r
QEMU=qemu-system-i386
# DIRS
## SOURCE
SOURCE_DIR=src
## BUILD
ISO_DIR=isodir
BUILD_DIR=${CURDIR}/build
export AS_OBJECT_DIR=$(BUILD_DIR)/as
export C_OBJECT_DIR=$(BUILD_DIR)/c
## GCC USR
GCC_USR_DIR=$(shell $(CC) -print-file-name=)
# TARGET
TARGET=aleksa-os
BINARY=$(BUILD_DIR)/$(TARGET).bin
ISO=$(TARGET).iso
# OBJECTS
## AS OBJECTS
AS_OBJ=boot.o ioport.o gdt.o idt.o irq.o paging.o
export AS_OBJECTS=$(patsubst %,$(AS_OBJECT_DIR)/%,$(AS_OBJ))
## C OBJECTS
C_OBJ=gdt.o heap.o idt.o kernel.o keyboard.o keymap.o stdio.o string.o tty.o vga.o irq_handler.o stack_protector.o timer.o paging.o
export C_OBJECTS=$(patsubst %,$(C_OBJECT_DIR)/%,$(C_OBJ))
## ALL OBJECTS IN ORDER
OBJ=$(GCC_USR_DIR)crti.o $(GCC_USR_DIR)crtbegin.o $(AS_OBJECTS) $(C_OBJECTS) $(GCC_USR_DIR)crtend.o $(GCC_USR_DIR)crtn.o
# OTHER FILES
LINKER=$(SOURCE_DIR)/linker.ld
GRUB.CFG=$(SOURCE_DIR)/grub.cfg
# RULES
.PHONY: all clean compile install_headers iso run run-iso
all: compile
clean:
$(RM) $(BUILD_DIR) $(ISO_DIR) $(ISO)
$(BINARY): $(OBJ)
$(CC) -T $(LINKER) -o $(BINARY) $(CFLAGS) -nostdlib -lgcc $(OBJ)
install_headers:
./scripts/install_headers.sh
compile:
$(MAKE) install_headers
@$(MAKE) --directory $(SOURCE_DIR)
$(MAKE) $(BINARY)
$(ISO): $(OBJ) $(GRUB.CFG)
ifeq ($(shell ./scripts/is_multiboot.sh), 0)
$(MKDIR) $(ISO_DIR)/boot/grub
$(CP) $(BINARY) $(ISO_DIR)/boot/$(TARGET).bin
$(CP) $(GRUB.CFG) $(ISO_DIR)/boot/grub/grub.cfg
grub-mkrescue -o $(ISO) $(ISO_DIR)
else
@echo "$(BINARY) is not x86 multiboot compatible"
$(RM) $(BINARY)
endif
iso: compile
$(MAKE) $(ISO)
run: compile
$(QEMU) -kernel $(BINARY) $(QEMU_DEBUG)
run-iso: iso
$(QEMU) -cdrom $(ISO)
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