What is the difference between gmake and make?

I am trying to understand the difference between 'gmake' and 'make'?

On my linux box they are identical:

% gmake --version
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

% make --version
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

I am guessing this isn't the same on all platforms? Is there a good reason to use one over the other?
Is there some historical significance to why there are the two names?

Solution 1:

'gmake' refers specifically to GNU make. 'make' refers to the system's default make implementation; on most Linux distros this is GNU make, but on other unixes, it could refer to some other implementation of make, such as BSD make, or the make implementations of various commercial unixes.

The language accepted by GNU make is a superset of the one supported by the traditional make utility.

By using 'gmake' specifically you can use GNU make extensions without worrying about them being misinterpreted by some other make implementation.

Solution 2:

On my system no difference (gmake is soft link to make):

-> ls -l $(which gmake make)
lrwxrwxrwx 1 root root      4 Jun  5  2007 /usr/bin/gmake -> make
-rwxr-xr-x 1 root root 168976 Jul 13  2006 /usr/bin/make

gmake stands for GNU make. There're different implementations of make. On Linux machine most probably make will by GNU and to make user's life isier make is soft linked to gmake.