Using grep result in Makefile

[kjm]

Hi,
I am giving a test name from terminal which I am reading in Makefile. I want to grep the test name for say (ab, or cd, or ef) & I want to use this grep result in If-Else to assign value to another variable.

How can I do it?

Thanks in advance.

 

[accordg9]

grep | ab | grep cd | grep ef | grep gh

result of grep

ab
cd
ef
gh