dx-dev software package provides virtual package provided by libdx4-dev, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install dx-dev
dx-dev is installed in your system.
Make ensure the dx-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep dx-dev*
You will get with dx-dev package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Virtual packages |
| Package | dx-dev |
| Version | |
| Description | virtual package provided by libdx4-dev |
| Sub Section | virtual |