Makefile.clang

CURRENT_DIR := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))

ifeq ($(origin LLVM_VERSION),undefined)
	LLVM_VERSION = 18
endif

LLVM_SUFFIX = $(if $(LLVM_VERSION),-$(LLVM_VERSION),)
CC := clang${LLVM_SUFFIX}
LD := ld.lld${LLVM_SUFFIX}
OBJCOPY := llvm-objcopy${LLVM_SUFFIX}
AR := llvm-ar${LLVM_SUFFIX}
RANLIB := llvm-ranlib${LLVM_SUFFIX}

CFLAGS := --target=riscv64 -march=rv64imc_zba_zbb_zbc_zbs
CFLAGS += -D__ISO_C_VISIBLE=1999 -DCKB_DECLARATION_ONLY -DCKB_MALLOC_DECLARATION_ONLY -DCKB_PRINTF_DECLARATION_ONLY -fPIC -g -O3
CFLAGS += -fno-builtin-printf -fno-builtin-memcmp \
		-nostdinc -nostdlib\
		-fdata-sections -ffunction-sections

CFLAGS += -I lualib -I lualib/c-stdlib -I include/ckb-c-stdlib -I include/ckb-c-stdlib/libc -I include/ckb-c-stdlib/molecule
CFLAGS += -I deps/compiler-rt-builtins-riscv/compiler-rt/lib/builtins
CFLAGS += -Wall -Werror -Wno-error=unused-command-line-argument -Wno-error=incompatible-library-redeclaration -Wno-error=invalid-noreturn -Wno-error=unused-function

LDFLAGS := -static --gc-sections
LDFLAGS += -Ldeps/compiler-rt-builtins-riscv/build -lcompiler-rt

all: lualib/liblua.a build/lua-loader build/spawnexample

deps/compiler-rt-builtins-riscv/build/libcompiler-rt.a:
	cd deps/compiler-rt-builtins-riscv && $(MAKE) CC=$(CC) LD=$(LD) OBJCOPY=$(OBJCOPY) AR=$(AR) RANLIB=$(RANLIB)

build/stdlib.o: include/ckb-c-stdlib/libc/src/impl.c
	@echo $(CC) $(filter-out -DCKB_DECLARATION_ONLY, $(CFLAGS)) -c -o $@ $<
	@$(CC) $(filter-out -DCKB_DECLARATION_ONLY, $(CFLAGS)) -c -o $@ $<

lualib/liblua.a:
	make -C lualib -f Makefile.clang CC=$(CC) liblua.a

build/spawnexample.o: examples/spawn.c
	$(CC) -c $(CFLAGS) -o $@ $<

build/spawnexample: build/spawnexample.o build/stdlib.o deps/compiler-rt-builtins-riscv/build/libcompiler-rt.a
	$(LD) $(LDFLAGS) -o $@ $^
	cp $@ $@.debug
	$(OBJCOPY) --strip-debug --strip-all $@

build/lua-loader.o: lua-loader/lua-loader.c
	$(CC) -c $(CFLAGS) -o $@ $<

build/lua-loader: build/lua-loader.o build/stdlib.o lualib/liblua.a deps/compiler-rt-builtins-riscv/build/libcompiler-rt.a
	$(LD) $(LDFLAGS) -o $@ $^
	cp $@ $@.debug
	$(OBJCOPY) --strip-debug --strip-all $@

fmt:
	clang-format -style="{BasedOnStyle: google, IndentWidth: 4, SortIncludes: false}" -i lualib/*.c lualib/*.h lua-loader/*.h lua-loader/*.c include/*.c include/*.h tests/test_cases/*.c

clean-local:
	rm -f build/*.o
	rm -f build/lua-loader
	rm -f build/lua-loader*
	rm -f build/libckblua*
	rm -f build/dylibtest
	rm -f build/dylibexample
	rm -f build/spawnexample*

clean: clean-local
	make -C lualib clean

run-gdb:
	riscv64-unknown-linux-gnu-gdb -ex "target remote 127.0.0.1:${PORT}" build/lua-loader.debug