wget fails to compile

[clusty1@…]

--->  Computing dependencies for wget
--->  Configuring wget
Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_net_wget/work/wget-1.12" && ./configure --prefix=/opt/local --with-libssl-prefix=/opt/local " returned error 1
Command output: checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for ranlib... ranlib
checking for _LARGEFILE_SOURCE value needed for large files... no
checking whether NLS is requested... yes
checking for msgfmt... ./configure: line 5317:  4261 Trace/BPT trap          $ac_dir/$ac_word --statistics /dev/null 1>&5 2>&1
:
checking for gmsgfmt... :
checking for xgettext... ./configure: line 5407:  4270 Trace/BPT trap          $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 1>&5 2>&1
:
checking for msgmerge... ./configure: line 5452:  4276 Trace/BPT trap          $ac_dir/$ac_word --update -q /dev/null /dev/null 1>&5 2>&1
:
checking for ld used by GCC... /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld
checking if the linker (/usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld) is GNU ld... no
checking for shared library run path origin... done
checking for CFPreferencesCopyAppValue... yes
checking for CFLocaleCopyCurrent... yes
checking for GNU gettext in libc... no
checking for iconv... no, consider installing GNU libiconv
checking for GNU gettext in libintl... no
checking whether to use NLS... no
checking for ranlib... (cached) ranlib
checking for flex... flex
checking lex output file root... configure: error: cannot find output from flex; giving up

Error: Status 1 encountered during processing.