Have fun, this is nothing new, either update the admin/ directory or get rid of the packages while you're at it. I'll open a bug per package with build logs, but I wanted to have a sub-tracker for them. It seems like they try to use the (internal!) AH_CHECK_HEADERS macro rather than AC_CHECK_HEADERS, which has been renamed.
Hah, just noticed it was in kde-base, so with admin/ of 3.5.10… have fun guys! :P
Created attachment 199443 [details]
Created attachment 199547 [details]
Seems like the problem is the KDE_CHECK_HEADERS macro:
AC_CHECK_HEADERS([$1], [$2], [$3], [$4])
I'd sincerely just get rid of the AH_CHECK_HEADERS call, it works fine without that.
*** Bug 257603 has been marked as a duplicate of this bug. ***
KDE 3.5.10 (including kdelibs:3.5) has been removed from Portage. Closing.