sid@flashpoint:~/Desktop/cp-fw$ sudo apt-cache show avr-libc
Package: avr-libc
Priority: extra
Section: universe/otherosfs
Installed-Size: 33360
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Hakan Ardo <hakan@debian.org>
Architecture: all
Version: 1:1.7.1-2
Depends: gcc-avr (>= 1:4.5.3-1), binutils-avr (>= 2.20.1-2)
Filename: pool/universe/a/avr-libc/avr-libc_1.7.1-2_all.deb
Size: 4665316
MD5sum: d39b60d6a1e15de19d35a9bbfe02a57a
SHA1: be62d26d8776973db1ced474d82ebf66fd0481d8
SHA256: 4537037f14299be1388567eda98906bf5398320a5db94f27ea90e69d2280a2ec
Description-en: Standard C library for Atmel AVR development
 Standard library used to the development of C programs for the
 Atmel AVR micro controllers. This package contains static
 libraries as well as the header files needed.
Description-md5: f8da43e684408fb968aa4789b21feef2
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu

sid@flashpoint:~/Desktop/cp-fw$ sudo apt-cache show gcc-avr
Package: gcc-avr
Priority: extra
Section: universe/devel
Installed-Size: 21168
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Hakan Ardo <hakan@debian.org>
Architecture: amd64
Version: 1:4.5.3-3
Provides: c-compiler-avr
Depends: libc6 (>= 2.11), libgmp10, libmpc2, libmpfr4 (>= 3.1.0), zlib1g (>= 1:1.1.4), binutils-avr (>= 2.18-4)
Suggests: task-c-devel, gcc-doc (>= 4:4.0.2-1), gcc-4.2, avr-libc (>= 1:1.6.2-2)
Conflicts: avr-libc (<= 1:1.6.2-1)
Filename: pool/universe/g/gcc-avr/gcc-avr_4.5.3-3_amd64.deb
Size: 8267314
MD5sum: 4383db24bab39da4f3c2ce33235cba36
SHA1: c0a44d7b4049b1deca4b4d000d1aad5282048bec
SHA256: 51c3dfa0f944970d41b3925558c44cd349a2749d97c0cca14228bdf77b23f91d
Description-en: The GNU C compiler (cross compiler for avr)
 This is the GNU C compiler, a fairly portable optimizing compiler which
 supports multiple languages.  This package includes support for C.
Description-md5: 747859ccf40ae64bdd980d06c0896d57
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu