make: Nothing to be done for `all'

Question

I am going through an eg pgm to create a make file.

http://mrbook.org/tutorials/make/

My folder eg_make_creation contains the following files,

Answer 1

Sometimes "Nothing to be done for all" error can be caused by spaces before command in makefile rule instead of tab. Please ensure that you use tabs instead of spaces inside of your rules.

all:
<\t>$(CC) $(CFLAGS) ...

instead of

all:
    $(CC) $(CFLAGS) ...

Please see the GNU make manual for the rule syntax description: https://www.gnu.org/software/make/manual/make.html#Rule-Syntax