gnumach-image-1.3.99-486-dbg software package provides GNU version of the Mach microkernel for debugging, 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 gnumach-image-1.3.99-486-dbg
gnumach-image-1.3.99-486-dbg is installed in your system.
Make ensure the gnumach-image-1.3.99-486-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnumach-image-1.3.99-486-dbg *
You will get with gnumach-image-1.3.99-486-dbg package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Debug packages |
| Package | gnumach-image-1.3.99-486-dbg |
| Version | 2:1.3.99.dfsg.git20120610-1 |
| Description | GNU version of the Mach microkernel for debugging |
| Sub Section | debug |