■

root@debian:~# aptitude search libjpeg
v   libjpeg-dev                          -
v   libjpeg-gif                          -
p   libjpeg-mmx-dev                      - Development files for the IJG JPEG library wit
p   libjpeg-mmx-progs                    - Programs for manipulating jpeg files using mmx
p   libjpeg-progs                        - Programs for manipulating JPEG files
i A libjpeg62                            - The Independent JPEG Group's JPEG runtime libr
p   libjpeg62-dev                        - Development files for the IJG JPEG library

MMX?