Features/libjpeg-turbo-jpeg8-ABI

libjpeg-turbo jpeg8 ABI

Summary

Build and ship libjpeg-turbo with libjpeg8 compatible API/ABI. Currently we ship libjpeg-turbo with libjpeg6 compatible API/ABI.

Owner

• Name: Adam Tkac

• Email: atkac@redhat.com

Current status

• Targeted release: Fedora 19
• Last updated: 18-Oct-2012
• Percentage of completion: 00%

Benefit to Fedora

Since other distributions slowly adopts libjpeg8 API/ABI as well, it's logical step. Also some projects support only libjpeg8 API/ABI (check https://bugzilla.redhat.com/show_bug.cgi?id=854695 for example).

Scope

All packages which require libjpeg.so need to be rebuilt against new library. jpeg8 API is mostly compatible with the current jpeg6 API so there shouln't be any issues with porting. jpeg6->jpeg8 transition will have four steps:

1. Creation of the libjpeg-turbo-compat library which will contain current libjpeg.so.62 library to avoid breakages in distro

2. libjpeg-turbo and libjpeg-turbo-devel will be built with jpeg8 API/ABI

3. Rebuild of all dependent pkgs

4. Removal of the libjpeg-turbo-compat library

How To Test

1. All packages which depends on libjpeg-turbo should be rebuilt successfully

2. Basic testing of mostly used apps should be sufficient (firefox, your favorite image viewer etc)

User Experience

Users will have to be able run apps which require libjpeg >= 8.

Dependencies

Many pkgs depend check them via "repoquery --alldeps --whatrequires 'libjpeg.so.62()(64bit)'" on 64bit system.

Contingency Plan

Create libjpeg-turbo-compat and libjpeg-turbo-compat-devel libraries with jpeg6 API/ABI and ship them in distro.

Documentation

• TBD

Release Notes

• TBD

Comments and Discussion

• See Talk:Features/Your_Feature_Name