[darwinbuild] Makefile

[Ben Zhu]

This message may be posted on wrong place. So please pardon me.

I am writing a makefile on OS X 10.4.3 for my security library building.
Hopefully it later can be used in a darwinbuild process. 

In the makefile I use the GNU make built-in command such as ifeq and
ifneq.
However when I do make, the compiler complains ifeq command not found.

My question: does the GNU make (v3.80) command on OS X 10.4 support the
built-in command such as ifeq and ifneq?

Thanks