File: autoconf.info,  Node: Header Files,  Next: Declarations,  Prev: Library Functions,  Up: Existing Tests

5.6 Header Files
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The following macros check for the presence of certain C header files.
If there is no macro specifically defined to check for a header file you
need, and you don't need to check for any special properties of it, then
you can use one of the general header-file check macros.

* Menu:

* Header Portability::          Collected knowledge on common headers
* Particular Headers::          Special handling to find certain headers
* Generic Headers::             How to find other headers