# Color definitions -------------------------------
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NO_COLOR="\033[0m"
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RED="\033[38;5;009m"
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GREEN="\033[38;5;010m"
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YELLOW="\033[38;5;011m"
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ORANGE="\033[38;5;214m"
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LIGHTPURPLE="\033[38;5;177m"
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PURPLE="\033[38;5;135m"
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CYAN="\033[38;5;014m"
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LIGHTBLUE="\033[38;5;39m"
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BLUE="\033[38;5;75m"
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DARKBLUE="\033[38;5;33m"
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LIGHTGRAY="\033[38;5;252m"
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DARKGRAY="\033[38;5;242m"
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BRIGHTRED="\033[91m"
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BOLD="\033[1m"
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# PLATFORM definition, if not given ----------------
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PLATFORM ?= pqvexriscvsim
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# PATHS (adapt to your system)----------------------
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PATH_RISCV=/opt/riscv/
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PATH_RISC_BIN=$(PATH_RISCV)bin/
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PREFIX?=$(PATH_RISC_BIN)riscv64-unknown-elf
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# Project DIRS -------------------------------------
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LD_DIR=ld/
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BSP_DIR=bsp/
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SRC_DIR=src/
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INC_DIR=inc/
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OBJ_DIR=obj/
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# TOOLS --------------------------------------------
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AR?=$(PREFIX)-ar
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GCC?=$(PREFIX)-gcc
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CLANG=clang
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GDB?=$(PREFIX)-gdb
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OBJDUMP?=$(PREFIX)-objdump
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OBJCOPY?=$(PREFIX)-objcopy
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RISCVPATH=$(PATH_RISCV)riscv64-unknown-elf
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ECHO?=echo
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# GCC FLAGS ---------------------------------------
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CC=$(GCC)
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GCC_CFLAGS_COMMON := -g \
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-Os \
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-fno-builtin-printf \
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-Wno-unused-parameter \
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-Wall -Wextra -Wredundant-decls \
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-Wshadow -Wno-unused-function \
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-fno-common \
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-I$(RISCVPATH)/include \
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-I$(INC_DIR)
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GCC_CFLAGS_MURAX=-fstrict-volatile-bitfields --specs=nosys.specs
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RISCV_ARCH?=rv32im
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RISCV_ABI?=ilp32
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RISCV_CMODEL?=medany
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RISCV_ARCHFLAGS +=-march=$(RISCV_ARCH)
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RISCV_ARCHFLAGS +=-mabi=$(RISCV_ABI)
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RISCV_ARCHFLAGS +=-mcmodel=$(RISCV_CMODEL)
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GCC_RISCV_ARCHFLAGS=$(RISCV_ARCHFLAGS)
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CFLAGS += $(GCC_CFLAGS_COMMON) \
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$(GCC_CFLAGS_MURAX) \
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$(GCC_RISCV_ARCHFLAGS)
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# Linker flags --------------------------------------
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LDSCRIPT = $(LD_DIR)$(PLATFORM).ld
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LDFLAGS = $(GCC_RISCV_ARCHFLAGS)
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LDFLAGS += --specs=nosys.specs
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LDFLAGS += -Wl,-T$(LDSCRIPT)
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LDFLAGS += -nostartfiles -ffreestanding -Wl,--gc-sections
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LDFLAGS += -L$(BSP_DIR)
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LDFLAGS += -Wl,--start-group -l$(PLATFORM)bsp -lc -lm -Wl,--end-group
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# Object files --------------------------------------
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SDK_ASM_SRCS := $(wildcard $(SRC_DIR)*.S)
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SDK_C_SRCS := $(wildcard $(SRC_DIR)*.c)
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SDK_ASM_OBJS := $(SDK_ASM_SRCS:$(SRC_DIR)%.S=$(OBJ_DIR)%.o)
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SDK_C_OBJS := $(SDK_C_SRCS:$(SRC_DIR)%.c=$(OBJ_DIR)%.o)
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SDK_OBJS := $(SDK_C_OBJS) $(SDK_ASM_OBJS)
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# Target all ----------------------------------------
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.PHONY: all
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all: $(BSP_DIR)lib$(PLATFORM)bsp.a main.hex main.bin
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# Targets --------------------------------------------
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main.bin: main.elf
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@$(ECHO) $(PURPLE)"obj "$@""$(LIGHTGRAY)
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$(OBJCOPY) -O binary $< $@
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main.hex: main.elf
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@$(ECHO) $(PURPLE)"obj "$@""$(LIGHTGRAY)
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$(OBJCOPY) -O ihex $< $@
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main.elf: $(LIBWRAP) $(SDK_OBJS) $(LDSCRIPT)
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@$(ECHO) $(LIGHTPURPLE)"building "$@""$(LIGHTGRAY)
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$(GCC) $(GCC_RISCV_ARCHFLAGS) $(GCC_CFLAGS_COMMON) $(SDK_OBJS) -o $@ $(LDFLAGS)
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$(SDK_ASM_OBJS): $(OBJ_DIR)%.o: $(SRC_DIR)%.S
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@$(ECHO) $(ORANGE)"building "$@" (.S)"$(LIGHTGRAY)
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$(CC) $(CFLAGS) -c -o $@ $^
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$(SDK_C_OBJS): $(OBJ_DIR)%.o: $(SRC_DIR)%.c
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@$(ECHO) $(ORANGE)"building "$@" (.c)"$(LIGHTGRAY)
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$(CC) $(CFLAGS) -c -o $@ $^
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$(BSP_DIR)lib$(PLATFORM)bsp.a:
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@$(ECHO) $(ORANGE)"building "$@" (.a)"$(LIGHTGRAY)
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cd $(BSP_DIR) && $(MAKE)
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.PHONY: clean
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clean:
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@$(ECHO) $(RED)"cleaning..."$(LIGHTGRAY)
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rm -f main.elf main.bin main.hex $(SDK_OBJS)
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cd $(BSP_DIR) && $(MAKE) clean
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