Re: [gentoo-user] libjpeg, 6 vs 7, and emacs

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Wed, Sep 23, 2009 at 12:14 PM,  <felix@crowfix.com> wrote:
> Gentoo updates refuse to install both versions 6 and 7 of jpeg,
> and I have found that certain applications, like emacs, refuse
> to remerge with -7 so I have been refusing the -7 update for a
> month or two now.  Every once in a while, one slips by me,
> usually because I forget to remove thunderbird from the list of
> updates, and I find out when emacs won't run.  If I try to build
> emacs with -7, it complains, so I remerge jpeg-6 and then emacs
> is happy again.  I do not understand the compat lib; it also blocks,
> and since I can just refuse the -7 update and keep on working, I
> have not looked into it much, figuring that sooner or later emacs
> and other packages will be upgraded to handle jpeg-7.

jpegcompat-6b replaces jpeg-6b IF you have jpeg-7 also installed. Any
packages that depend on jpeg-6b should compile with jpegcompat-6b
also.