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(autoconf.info)Alternative Programs

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Alternative Programs
====================

   These macros check for the presence or behavior of particular
programs.  They are used to choose between several alternative programs
and to decide what to do once one has been chosen.  If there is no
macro specifically defined to check for a program you need, and you
don't need to check for any special properties of it, then you can use
one of the general program check macros.

Particular Programs

Special handling to find certain programs.

Generic Programs

How to find other programs.