Makefile

   1 # OUTELF and OUTBIN.
   2 OUTELF := tart
   3 OUTBIN := $(OUTELF).bin
   4
   5 CCFLAGS ?= -O2
   6
   7 # Include the config and rules.
   8 include config.mk
   9 include target/$(TARGET)/rules.mk
  10 include platform/$(PLATFORM)/rules.mk
  11 include rules.mk
  12
  13 # List of CFLAGS.
  14 CFLAGS += -std=c99 -Wall -Wextra -nostdlib -ffreestanding -lgcc $(CCFLAGS)
  15
  16 # Includes.
  17 CPPFLAGS := -Iinclude -Ikernel/include -Iarch/$(ARCH)/include -Itarget/$(TARGET)/include -Iplatform/$(PLATFORM)/include
  18
  19 # Get a list of source files.
  20 CSRC := $(shell find arch/$(ARCH) -type f -name "*.c") $(shell find kernel -type f -name "*.c")  \
  21        $(shell find target/$(TARGET) -type f -name "*.c") $(shell find platform/$(PLATFORM) -type f -name "*.c")
  22
  23 ASMSRC := $(shell find arch/$(ARCH) -type f -name "*.S") $(shell find kernel -type f -name "*.S")  \
  24        $(shell find target/$(TARGET) -type f -name "*.S") $(shell find platform/$(PLATFORM) -type f -name "*.S")
  25
  26 # Get the object files.
  27 OBJ := $(patsubst %.S,%.o,$(ASMSRC)) $(patsubst %.c,%.o,$(CSRC))
  28
  29 # Get the dependancies.
  30 DEP := $(patsubst %.S,%.d,$(ASMSRC)) $(patsubst %.c,%.d,$(CSRC))
  31
  32 # Linker script.
  33 LINK := arch/$(ARCH)/link.ld
  34
  35 # Make related files.
  36 MAKEDEPS := Makefile rules.mk config.mk target/$(TARGET)/rules.mk platform/$(PLATFORM)/rules.mk
  37
  38 # The default target.
  39 all: $(OUTFORMAT)
  40
  41 # List phony targets.
  42 .PHONY: all clean
  43
  44 # ELF output.
  45 $(OUTELF): $(OBJ) $(LINK)
  46         $(HOSTLD) $(OBJ) -T$(LINK) -o $@
  47
  48 # Binary output.
  49 $(OUTBIN): $(OUTELF)
  50         $(HOSTOBJCOPY) $(OUTELF) -O binary $@
  51
  52 # Include dependancy files.
  53 -include $(DEP)
  54
  55 # Clean.
  56 clean:
  57         -$(RM) $(wildcard $(OBJ) $(DEP) $(OUTELF) $(OUTFORMAT))
  58
  59 # Dog.
  60 dog:
  61         $(warning Experimental dog generator. Don't try it out; the default size isn't set, so-)
  62
  63 # CC.
  64 %.o: %.c $(MAKEDEPS)
  65         $(HOSTCC) $(CFLAGS) $(CPPFLAGS) -MMD -MP -c $< -o $@
  66
  67 # AS.
  68 %.o: %.S $(MAKEDEPS)
  69         $(HOSTCC) $(CFLAGS) $(CPPFLAGS) -MMD -MP -c $< -o $@