I keep getting the error make: *** No rule to make target ‘all’. Stop. whenever I run make all or make clean, despite having the correct data in my Makefile. How can I resolve this? Below is the code in make file

CC = arm-none-eabi-gcc
MACH = cortex-m4
CFLAGS = -c -mcpu=$(MACH) -mthumb -std=gnu11 -O0 -Wall

# List of object files
all:main.o led.o stm32_startup.o

# Rules for creating object files
main.o:main.c
    $(CC) $(CFLAGS) $^ -o $@

led.o:led.c
    $(CC) $(CFLAGS) $^ -o $@

stm32_startup.o:stm32_startup.c
    $(CC) $(CFLAGS) $^ -o $@

# Clean rule
clean:
    rm -rf *.o *.elf

I have tried in bash, cmd and powershell and I am getting same error.

These are the steps that I have tried:

1. Check File Name and Location
2. Verify Indentation
3. Check Line Endings
4. Run make with Debugging (no result as well)