libintl.8.dylib: mach-o, but wrong architecture (on configure of m4)

[askg]

I have performed a selfupdate and clean all. OS 10.5. MacBook Pro 13 "

Found this:

gosta-asks-macbook-pro:~ g$ sudo port install m4--->  Configuring m4
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_devel_m4/work/m4-1.4.13" && ./configure --prefix=/opt/local --program-prefix=g gl_cv_lib_sigsegv=no " returned error 1
Command output: checking for a french Unicode locale... (cached) fr_FR.UTF-8
checking for a traditional japanese locale... (cached) ja_JP.eucJP
checking for a transitional chinese locale... (cached) zh_CN.GB18030
checking for a french Unicode locale... (cached) fr_FR.UTF-8
checking for a traditional french locale... (cached) fr_FR.ISO8859-1
checking for a french Unicode locale... (cached) fr_FR.UTF-8
checking for wchar_t... (cached) yes
checking for wint_t... (cached) yes
checking for unsetenv... yes
checking for unsetenv() return type... int
checking for a traditional french locale... (cached) fr_FR.ISO8859-1
checking for a french Unicode locale... (cached) fr_FR.UTF-8
checking for a traditional japanese locale... (cached) ja_JP.eucJP
checking for a transitional chinese locale... (cached) zh_CN.GB18030
checking whether wctob works... yes
checking whether wctob is declared... yes
checking whether an open file can be renamed... yes
checking if changeword is wanted... no
checking which shell to use for syscmd... /bin/sh
checking if malloc debugging is wanted... no
configure: creating ./config.status
config.status: creating Makefile
dyld: Library not loaded: /opt/local/lib/libintl.8.dylib
  Referenced from: /opt/local/bin/gawk
  Reason: no suitable image found.  Did find:
	/opt/local/lib/libintl.8.dylib: mach-o, but wrong architecture
sed: stdout: Broken pipe
./config.status: line 1597: 46565 Done(1)                 eval sed \"\$ac_sed_extra\" "$ac_file_inputs"
     46566 Trace/BPT trap          | $AWK -f "$tmp/subs.awk" > $tmp/out
config.status: error: could not create Makefile
}}

[blb@…]

What's the history of your install, has it been around for a while? Also, what is the result of running

$ file /opt/local/lib/libintl.8.dylib