/var/tmp/portage/dev-php5/eaccelerator-0.9.5.1/work/eaccelerator-0.9.5.1/libtool: line 1266: func_opt_split: command not found
libtool: Version mismatch error. This is libtool 2.2, but the
libtool: definition of this LT_INIT comes from an older release.
libtool: You should recreate aclocal.m4 with macros from libtool 2.2
libtool: and run autoconf again.
make: *** [eaccelerator.lo] Error 63
Since neither eautoreconf, not elibtoolize does fix this, I really have no idea what to do with similar junk. libtool-2.2 is package.masked now at least.
post the full build log. autotools shouldnt have been re-run which means whatever version of autotools you have on your system shouldnt matter one lick.
package builds fine for me with libtool-2.2.x installed.
Dupe of bug 220519.
*** This bug has been marked as a duplicate of bug 220519 ***