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# Qt for Embedded Linux Requirements

### Building Qt for Embedded Linux with uclibc

If you intend to use WebKit then you should use at least version 0.9.29 of uclibc as that is the earliest version with sufficient pthread support.

### Additional X11 Libraries for QVFb

The Virtual Framebuffer (QVFb) application requires the `libxtst` library in addition to the libraries used to build Qt for X11. This library enables the use of the Record extension to the X protocol to be used in applications.

See also Known Issues in 4.4.3.

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