Having emerged pax-utils-0.1.10 with libcap <1.10-r5 installed results in a failed build due to several undefined references while linking with libcap. This required version has to be added to the ebuild in portage.
Eh? 1.10-r5 is the only version in portage. # eshowkw libcap Keywords for sys-libs/libcap: | a a a h i m m p p p s s s x | l m r p a 6 i p p p 3 h p 8 | p d m p 6 8 p c c c 9 a 6 | h 6 a 4 k s 6 - 0 r | a 4 4 m c | a | c | o | s --------+---------------------------- 1.10-r5 | + + + + + + + + + + + + +
I guess this was not always the case, since I had a libcap-1.10-r4 installed - apparently not updated for a while. Well, if this 'bug' only applies to me, you can close it.