emerge -uD system
Calculating system dependencies... done!
>>> starting parallel fetching

>>> Emerging (1 of 2) net-libs/libwww-5.4.0-r7 to /
 * libwww-5.4.0-patches-1.0.tar.bz2 MD5 ;-) ...                           [ ok ]
 * libwww-5.4.0-patches-1.0.tar.bz2 RMD160 ;-) ...                        [ ok ]
 * libwww-5.4.0-patches-1.0.tar.bz2 SHA1 ;-) ...                          [ ok ]
 * libwww-5.4.0-patches-1.0.tar.bz2 SHA256 ;-) ...                        [ ok ]
 * libwww-5.4.0-patches-1.0.tar.bz2 size ;-) ...                          [ ok ]
 * w3c-libwww-5.4.0.tgz MD5 ;-) ...                                       [ ok ]
 * w3c-libwww-5.4.0.tgz RMD160 ;-) ...                                    [ ok ]
 * w3c-libwww-5.4.0.tgz SHA1 ;-) ...                                      [ ok ]
 * w3c-libwww-5.4.0.tgz SHA256 ;-) ...                                    [ ok ]
 * w3c-libwww-5.4.0.tgz size ;-) ...                                      [ ok ]
 * checking ebuild checksums ;-) ...                                      [ ok ]
 * checking auxfile checksums ;-) ...                                     [ ok ]
 * checking miscfile checksums ;-) ...                                    [ ok ]
 * checking w3c-libwww-5.4.0.tgz ;-) ...                                  [ ok ]
 * checking libwww-5.4.0-patches-1.0.tar.bz2 ;-) ...                      [ ok ]
>>> Unpacking source...
>>> Unpacking w3c-libwww-5.4.0.tgz to /var/tmp/portage/libwww-5.4.0-r7/work
>>> Unpacking libwww-5.4.0-patches-1.0.tar.bz2 to /var/tmp/portage/libwww-5.4.0-r7/work
 * Applying various patches (bugfixes/updates) ...
 *   03_all_libwww-5.4.0-debian-autoconf-2.5.patch ...                    [ ok ]
 *   05_all_libwww-5.4.0-config-liborder.patch ...                        [ ok ]
 *   09_all_libwww-5.4.0-libssl.patch ...                                 [ ok ]
 *   11_all_libwww-5.4.0-automake-gentoo.patch ...                        [ ok ]
 *   16_all_libwww-5.4.0-disable-ndebug-gentoo.patch ...                  [ ok ]
 *   25_all_libwww-5.4.0-mysql-4.0.patch ...                              [ ok ]
 *   27_all_libwww-5.4.0-htbound.patch ...                                [ ok ]
 *   30_all_libwww-5.4.0-asneeded.patch ...                               [ ok ]
 *   36_all_libwww-5.4.0-noexport.patch ...                               [ ok ]
 *   50_all_libwww-5.4.0-respectflags.patch ...                           [ ok ]
 * Done with patching
 * Running eautoreconf in '/var/tmp/portage/libwww-5.4.0-r7/work/w3c-libwww-5.4.0' ...
 * Requested autoconf 2.5
 * Using autoconf (GNU Autoconf) 2.59
 * Using autoheader (GNU Autoconf) 2.59
 * Requested automake 1.10
 * Using automake (GNU automake) 1.4-p6
 * Using aclocal (GNU automake) 1.4-p6
 * Running aclocal ...                                                    [ ok ]
 * Running libtoolize --copy --force --automake ...                       [ ok ]
 * Running aclocal ...                                                    [ ok ]
 * Running autoconf ...                                                   [ ok ]
 * Running autoheader ...                                                 [ ok ]
 * Running automake --add-missing --copy --foreign ...                    [ !! ]

 * Failed Running automake !
 * 
 * Include in your bugreport the contents of:
 * 
 *   /var/tmp/portage/libwww-5.4.0-r7/temp/automake-21562.out


!!! ERROR: net-libs/libwww-5.4.0-r7 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_unpack
  ebuild.sh, line 708:   Called src_unpack
  libwww-5.4.0-r7.ebuild, line 36:   Called eautoreconf
  autotools.eclass, line 87:   Called eautomake
  autotools.eclass, line 188:   Called autotools_run_tool 'automake' '--add-missing' '--copy' '--foreign'
  autotools.eclass, line 242:   Called die

!!! Failed Running automake !
!!! If you need support, post the topmost build error, and the call stack if relevant.