libc6.1-dev software package provides Embedded GNU C Library: Development Libraries and Header Files, 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 libc6.1-dev
libc6.1-dev is installed in your system.
Make ensure the libc6.1-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libc6.1-dev *
You will get with libc6.1-dev package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Library development |
| Package | libc6.1-dev |
| Version | 2.13-38+deb7u10 |
| Description | Embedded GNU C Library: Development Libraries and Header Files |
| Sub Section | libdevel |