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(autoconf.info)Library Functions

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Library Functions
=================

   The following macros check for particular C library functions.  If
there is no macro specifically defined to check for a function you need,
and you don't need to check for any special properties of it, then you
can use one of the general function-check macros.

Function Portability

Pitfalls with usual functions

Particular Functions

Special handling to find certain functions

Generic Functions

How to find other functions