libmng fails to build

[David Liontooth]

--->  Fetching libmng
--->  Attempting to fetch libmng-1.0.9.tar.gz from
http://downloads.sourceforge.net/libmng
--->  Verifying checksum(s) for libmng
--->  Extracting libmng
--->  Configuring libmng
Error: Target com.apple.configure returned: shell command "cd
'/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_graphics_libmng/work/libmng-1.0.9'
&& LIBTOOLIZE=glibtoolize autoreconf -fi" returned error 1
Command output: /opt/local/share/aclocal/aalib.m4:12: warning:
underquoted definition of AM_PATH_AALIB
/opt/local/share/aclocal/aalib.m4:12:   run info '(automake)Extending
aclocal'
/opt/local/share/aclocal/aalib.m4:12:   or see
http://sources.redhat.com/automake/automake.html#Extending-aclocal
/usr/bin/gm4:configure.in:193: ERROR: recursion limit of 1024 exceeded,
use -L<N> to change it
autom4te: /usr/bin/gm4 failed with exit status: 1
aclocal: autom4te failed with exit status: 1
autoreconf: aclocal failed with exit status: 1