make failed

Open the Makefile in vi editor (not other editor).
See the line you have just inserted(object.o in Makefile (OBJ_CC)).
Probably you will see ^M character at the end of the file.
Remove that character and compile again.

If you do not know vi editor, then open the file in any gui editor and position the cursor at the end of the line and delete all the characters(It will delete the invisible ^M). (It will bring the next line to the current line. So just press enter to bring the next line to its original position). Repeat the same procedure for all the lines where you have inserted a new line.

The Procedure may seems to be strange but it solved my problem in several occasions. Probably it will solve your problem also.

Reason (as far as I believe): I faced the problem while doing cut and past from a dos file to unix file.

Some times make will be successful even if we are having ^M at some other places. I don’t know why. If some one is familiure with the problem, then kindly discuss your experience here.