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76 lines
2.2 KiB
Makefile
76 lines
2.2 KiB
Makefile
#### Directories
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include variables.mak
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OBJ = $(BUILD_DIR)/obj
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PROGRAM = sdram_init
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OBJECTS = $(OBJ)/head.o $(OBJ)/main.o $(OBJ)/sdram.o
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#### Compiler
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ARCH = $(shell uname -m)
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ifneq ("$(ARCH)", "ppc64")
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ifneq ("$(ARCH)", "ppc64le")
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CROSS_COMPILE = powerpc64le-linux-gnu-
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endif
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endif
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJCOPY = $(CROSS_COMPILE)objcopy
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#### Flags
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CPPFLAGS = -nostdinc
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CPPFLAGS += -I$(SRC_DIR)/libc/include -I$(LXSRC_DIR) -I$(LXINC_DIR) -I$(GENINC_DIR) -I$(SRC_DIR)/include
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CPPFLAGS += -isystem $(shell $(CC) -print-file-name=include)
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CFLAGS = -Os -g -Wall -std=c99 -m64 -mabi=elfv2 -msoft-float -mno-string -mno-multiple -mno-vsx -mno-altivec -mlittle-endian -fno-stack-protector -mstrict-align -ffreestanding -fdata-sections -ffunction-sections -fno-delete-null-pointer-checks
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ASFLAGS = $(CPPFLAGS) $(CFLAGS)
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LDFLAGS = -static -nostdlib -Ttext-segment=0xffff0000 -T $(SRC_DIR)/$(PROGRAM).lds --gc-sections
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#### Pretty print
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ifeq ($(VERBOSE),1)
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define Q
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$(2)
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endef
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else
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define Q
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@echo " [$1] $(3)"
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@$(2)
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endef
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endif
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#### Rules. This is a bit crappy, I'm sure we can do better with the
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#### handling of the various path, but this will have to do
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#### until I can be bothered getting my head around the finer
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#### points of Makefiles
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all: objdir $(OBJ)/$(PROGRAM).hex
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$(OBJ)/sdram.o: $(LXSRC_DIR)/sdram.c
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$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
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$(OBJ)/%.o : $(SRC_DIR)/%.S
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$(call Q,AS, $(CC) $(ASFLAGS) -c $< -o $@, $@)
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$(OBJ)/%.o : $(SRC_DIR)/%.c
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$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
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$(OBJ)/%.o : $(SRC_DIR)/libc/src/%.c
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$(call Q,CC, $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@, $@)
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LIBC_SRC := $(wildcard $(SRC_DIR)/libc/src/*.c)
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LIBC_OBJ := $(patsubst $(SRC_DIR)/libc/src/%.c, $(OBJ)/%.o,$(LIBC_SRC))
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$(OBJ)/libc.o: $(LIBC_OBJ)
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$(call Q,LD, $(LD) -r -o $@ $^, $@)
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$(OBJ)/$(PROGRAM).elf: $(OBJECTS) $(OBJ)/libc.o
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$(call Q,LD, $(LD) $(LDFLAGS) -o $@ $^, $@)
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$(OBJ)/$(PROGRAM).bin: $(OBJ)/$(PROGRAM).elf
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$(call Q,OC, $(OBJCOPY) -O binary -S $^ $@, $@)
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$(OBJ)/$(PROGRAM).hex: $(OBJ)/$(PROGRAM).bin
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$(call Q,HX, $(SRC_DIR)/bin2hex.py $^ > $@, $@)
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objdir:
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@mkdir -p $(OBJ)
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