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# General Qt Requirements

This page describes the specific requirements of libraries and components on which Qt depends. For information about installing Qt, see the Installation page.

### OpenSSL (version 0.9.7 or later)

Support for Secure Sockets Layer (SSL) communication is provided by the OpenSSL Toolkit, which must be obtained separately.

### Platform-Specific Requirements

Each platform has its own specific set of dependencies. Please see the relevant page for more details about the components that are required to build and install Qt on your platform.

- Qt for Embedded Linux Requirements
- Qt for Mac OS X Requirements
- Qt for Windows CE Requirements
- Qt for Windows Requirements
- Qt for X11 Requirements