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20.4. X11R7 Developer Notes

This section includes a summary of issues of note for developers and packagers, and suggestions on how to fix them where possible.

20.4.1. The /usr/X11R6/ Directory Hierarchy

X11R7 files install into /usr directly now, and no longer use the /usr/X11R6/ hierarchy. Applications that rely on files being present at fixed paths under /usr/X11R6/, either at compile time or run time, must be updated. They should now use the system PATH, or some other mechanism to dynamically determine where the files reside, or alternatively to hard code the new locations, possibly with fallbacks.