1 1 5.2 Alternative Programs 1 ======================== 1 1 These macros check for the presence or behavior of particular programs. 1 They are used to choose between several alternative programs and to 1 decide what to do once one has been chosen. If there is no macro 1 specifically defined to check for a program you need, and you don't need 1 to check for any special properties of it, then you can use one of the 1 general program-check macros. 1
1 · Particular Programs Special handling to find certain programs · Generic Programs How to find other programs 1