libjpeg vs. libjpeg-turbo

[Lawrence Velázquez]

On May 23, 2015, at 9:04 PM, Ryan Schmidt <ryandesign at macports.org> wrote:

> I do wish to do at least some basic functionality testing of a libjpeg replacement on Tiger and Leopard. I do not want to be the cause of much of MacPorts ceasing to function properly for users of those systems, if it can be reasonably avoided.
> 
> I verified libjpeg-turbo 1.4.0 builds and destroots on real PowerPC Macs running 10.4 and 10.5, but have not yet installed or used it.
> 
> I plan to rebuild a port I maintain--graphviz--and all its dependencies to use libjpeg-turbo, then verify that I can create a graph with graphviz that both uses (reads) jpeg input files and produces (writes) a jpeg output file. Then I would probably repeat the test with mozjpeg instead of libjpeg-turbo. If that works, I'll be satisfied to replace jpeg with libjpeg-turbo/mozjpeg.

Running `port test libjpeg-turbo` would be useful as well.

vq