automake with defines

[Marko Mlinar]

Hi!

I am trying to make automated testbench using autoconf & automake.
The problem is, each test should be compiled with different defines (e.g.
using -D
commandline parameter to gcc). Is it possible to do this?  I was not able to
find this
in the manual.

Basically I would need something like prog_CFLAGS.

thanks for your help,
  Marko