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Diffstat (limited to 'arch/riscv/linux/Makefile')
| -rw-r--r-- | arch/riscv/linux/Makefile | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/riscv/linux/Makefile b/arch/riscv/linux/Makefile new file mode 100644 index 0000000..9b813ff --- /dev/null +++ b/arch/riscv/linux/Makefile @@ -0,0 +1,60 @@ +## +# By default everything is silent. If you want to change this behavior, simply +# assign V=1 when calling make. + +V = +ifeq ($(strip $(V)),) + E = @echo + Q = @ +else + E = @\# + Q = +endif + +## +# Compile options. You can use CROSS_COMPILE just like on the Linux Kernel. You +# can also determine the ISA to be used, which defaults to my VisionFive2 board. +# I did not go too much into the rabbit hole of platform-specific flags because +# everything is in assembly anyways and everything is statically linked. Hence +# no `-mcpu`, no `-mtune`, no funny business. + +CC = $(CROSS_COMPILE)gcc +LD = $(CROSS_COMPILE)ld +ISA ?= rv64imafdc_zicntr_zicsr_zifencei_zihpm_zca_zcd_zba_zbb +WARNINGS = -Werror -Wpedantic -Wall -Wextra -Wcast-align -Wcast-qual -Winit-self \ + -Wmissing-include-dirs -Wredundant-decls -Wshadow -Wsign-conversion \ + -Wswitch-default -Wundef -Wunreachable-code -Wmissing-noreturn +CCFLAGS = $(WARNINGS) -march=$(ISA) +LDFLAGS = + + +# You can pass an optional `DEBUG` variable to manipulate the build type. +DEBUG = +ifeq ($(strip $(DEBUG)),) + CCFLAGS += -O3 +else + CCFLAGS += -g +endif + +## +# Paths. + +SRC = $(wildcard *.c) +EXES = $(SRC:.c=) + +## +# Targets + +.PHONY: all +all: clean $(EXES) + +.PHONY: build +build: $(EXES) + +.c: + $(E) " CC " $(*F) + $(Q) $(CC) $(CCFLAGS) $< -o $@ + +.PHONY: clean +clean: + $(Q) rm -f $(EXES) |