(autoconf.info)Declarations


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5.7 Declarations
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The following macros check for the declaration of variables and
functions.  If there is no macro specifically defined to check for a
symbol you need, then you can use the general macros (Note: Generic
Declarations) or, for more complex tests, you may use
`AC_COMPILE_IFELSE' (Note: Running the Compiler).

* Particular Declarations
Macros to check for certain declarations
* Generic Declarations
How to find other declarations

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