Filesystem Hierarchy Standard

4.6 /usr/include : Directory for standard include files.

4.6.1 Purpose

This is where all of the system's general-use include files for the C programming language should be placed.

4.6.2 Specific Options

The following directories, or symbolic links to directories, must be in /usr/include, if the corresponding subsystem is installed:

"Include files"
BSD compatibility include files (optional)


The symbolic link /usr/include/X11 must link to /usr/X11R6/include/X11 if the latter exists.

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Translated by troff2html v1.5 on 29 March 2002 by Daniel Quinlan