HAL Compile (makefile)

A question about compilation. Wrote such a makefile -

MODULE_NAME := Name

MODINC := /usr/share/linuxcnc/Makefile.modinc

SRC_DIR := Src
INC_DIR := Inc

SRC_FILES := $(wildcard $(SRC_DIR)/*.c)
OBJ_FILES := $(notdir $(SRC_FILES:.c=.o))

$(MODULE_NAME)-objs := $(OBJ_FILES)
obj-m += $(MODULE_NAME).o

export BUILD_VERBOSE := 1

include $(MODINC)

EXTRA_CFLAGS += -I$(shell pwd)/$(SRC_DIR)
EXTRA_CFLAGS += -I$(shell pwd)/$(INC_DIR)

EXTRA_CFLAGS += -O2
EXTRA_CFLAGS += -march=x86-64
EXTRA_CFLAGS += -mtune=generic

EXTRA_CFLAGS += -fno-fast-math
EXTRA_CFLAGS += -fno-unsafe-math-optimizations

%.o: $(SRC_DIR)/%.c
$(CC) $(EXTRA_CFLAGS) -c $< -o $@

all:
make -S modules

clean:
rm -f *.ko *.so *.o *.tmp *.ver *.order

the flags that I use do not violate the rtapi rules? Will this affect the operation of Linux cnc? Is it redundant and unnecessary?