imagemagick configure script has "--with-quantum-depth" option which allows to choose quantum depth (8, 16 or 32). Actually most users do not require quantum depth more than 8, but default option is 16. The users who know what is it, want to be able to choose between 8, 16 and 32 - it is really important option. And currently it is unable to choose it using emerge. The only one way to do it is to manually edit imagemagick ebuild.
*** Bug 177610 has been marked as a duplicate of this bug. ***
Created attachment 119359 [details, diff] Adds USE flags: q8, q16 (the default) and q32 to allow users to change quantum depth As mentioned previously, if you know what quantum depth is, you know that you have to manually build IM to get a depth that is not 16. Patch defines USE variables q8, q16 and q32. As is the case with the manual build the default (if no qs are defined) depth is q16.
(In reply to comment #2) > Created an attachment (id=119359) [edit] > Adds USE flags: q8, q16 (the default) and q32 to allow users to change quantum > depth > Contributer mailed graphics asking on why there hasn't been any activity. The simple answer is that there probably isn't anyone actively looking after imagemagick atm. Sekretarz has an open retirement bug (bug 56912).
commited to portage, thanks for help