I can't pass emerge of libwww and squid - ending up with such errors:

cd . && aclocal
cd . && automake --foreign --include-deps Makefile cd . && autoconf
aclocal.m4:267: error: m4_defn: undefined macro: _m4_divert_diversion
autoconf/c.m4:1180: AC_C_VOLATILE is expanded from... aclocal.m4:267: the
top level
autom4te-2.58: /usr/bin/m4 failed with exit status: 1 make: ***
[configure] Error 1

!!! ERROR: net-libs/libwww-5.4.0-r1 failed. !!! Function src_compile, Line
48, Exitcode 2 !!! (no error message)

patching file src/cf.data.pre
Hunk #2 succeeded at 2053 (offset 21 lines). Hunk #3 succeeded at 2088
(offset 21 lines). Hunk #4 succeeded at 2109 (offset 21 lines). Hunk #5
succeeded at 2323 (offset 16 lines). Hunk #6 succeeded at 2333 (offset 16
lines). Hunk #7 succeeded at 3109 with fuzz 1 (offset 16 lines). Hunk #8
succeeded at 3133 (offset -6 lines). patching file src/debug.c
patching file src/defines.h
patching file src/main.c
Hunk #6 succeeded at 914 (offset 2 lines). patching file src/url.c
configure.in:13: warning: do not use m4_patsubst: use patsubst or
m4_bpatsubst aclocal.m4:628: AM_CONFIG_HEADER is expanded from...
configure.in:13: the top level
configure.in:1409: warning: AC_CHECK_TYPE: assuming `u_short' is not a
type autoconf/types.m4:234: AC_CHECK_TYPE is expanded from...
configure.in:1409: the top level
configure.in:2296: warning: do not use m4_regexp: use regexp or m4_bregexp
aclocal.m4:641: _AM_DIRNAME is expanded from... configure.in:2296: the top
level
configure.in:2109: error: do not use LIBOBJS directly, use AC_LIBOBJ (see
section `AC_LIBOBJ vs LIBOBJS'
If this token and others are legitimate, please use
m4_pattern_allow. See the Autoconf documentation.

!!! ERROR: net-www/squid-2.5.4 failed. !!! Function src_unpack, Line 52,
Exitcode 1 !!! (no error message)

any hints?