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| author | Aleksa Vučković <aleksav013@gmail.com> | 2021-10-07 12:04:07 +0200 |
|---|---|---|
| committer | Aleksa Vučković <aleksav013@gmail.com> | 2021-10-07 12:04:07 +0200 |
| commit | ed5d024c8b4961b6d722bf45d2c98846afdc1191 (patch) | |
| tree | 9c3e710bf1f1c64c7cebbffe8527a7c765b96228 /Makefile | |
| parent | a9f29cfe168f634434047b55ab16b760e9020680 (diff) | |
Calling global constructors
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 52 |
1 files changed, 37 insertions, 15 deletions
@@ -1,27 +1,49 @@ -SOURCE_DIR=src -BUILD_DIR=build -ISO_DIR=isodir +CC = i686-elf-gcc +AS = i686-elf-as +CFLAGS = +MKDIR = mkdir -p +RM = rm -rf +CP = cp + +SOURCE_DIR = src +BUILD_DIR = build +ISO_DIR = isodir + +AS_SOURCE = boot.s +C_SOURCE = kernel.c + +OBJ_FILES = boot.o kernel.o +CRTBEGIN_OBJ:=$(shell $(CC) -print-file-name=crtbegin.o) +CRTEND_OBJ:=$(shell $(CC) -print-file-name=crtend.o) + +OBJ = $(BUILD_DIR)/crti.o $(CRTBEGIN_OBJ) $(patsubst %,$(BUILD_DIR)/%,$(OBJ_FILES)) $(CRTEND_OBJ) $(BUILD_DIR)/crtn.o + +# Creating iso file .PHONY: all all: $(BUILD_DIR)/myos.bin grub-file --is-x86-multiboot $(BUILD_DIR)/myos.bin mkdir -p $(ISO_DIR)/boot/grub - cp $(BUILD_DIR)/myos.bin $(ISO_DIR)/boot/myos.bin - cp $(SOURCE_DIR)/grub.cfg $(ISO_DIR)/boot/grub/grub.cfg + $(CP) $(BUILD_DIR)/myos.bin $(ISO_DIR)/boot/myos.bin + $(CP) $(SOURCE_DIR)/grub.cfg $(ISO_DIR)/boot/grub/grub.cfg grub-mkrescue -o myos.iso $(ISO_DIR) -$(BUILD_DIR)/boot.o: $(SOURCE_DIR)/boot.s - mkdir -p $(BUILD_DIR) - i686-elf-as $(SOURCE_DIR)/boot.s -o $(BUILD_DIR)/boot.o +# Linking object files +$(BUILD_DIR)/myos.bin: $(OBJ) + $(MKDIR) $(BUILD_DIR) + $(CC) -T $(SOURCE_DIR)/linker.ld -o $(BUILD_DIR)/myos.bin -ffreestanding -O2 -nostdlib $(OBJ) -lgcc -$(BUILD_DIR)/kernel.o: $(SOURCE_DIR)/kernel.c - mkdir -p $(BUILD_DIR) - i686-elf-gcc -c $(SOURCE_DIR)/kernel.c -o $(BUILD_DIR)/kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra +# Compiling as sources +$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.s + $(MKDIR) $(BUILD_DIR) + $(AS) $< -o $@ -$(BUILD_DIR)/myos.bin: $(BUILD_DIR)/kernel.o $(BUILD_DIR)/boot.o - mkdir -p $(BUILD_DIR) - i686-elf-gcc -T $(SOURCE_DIR)/linker.ld -o $(BUILD_DIR)/myos.bin -ffreestanding -O2 -nostdlib $(BUILD_DIR)/boot.o $(BUILD_DIR)/kernel.o -lgcc +# Compiling C sources +$(BUILD_DIR)/%.o: $(SOURCE_DIR)/%.c + $(MKDIR) $(BUILD_DIR) + $(CC) -c $< -o $@ -std=gnu99 -ffreestanding -O2 -Wall -Wextra +# Cleaning .PHONY: clean clean: - rm -rf $(BUILD_DIR) $(ISO_DIR) myos.iso + $(RM) $(BUILD_DIR) $(ISO_DIR) myos.iso |