libmng fails installation

[mellon85@…]

Output of "port -d install libmng" :

DEBUG: Found port in ​file:///opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/libmng DEBUG: Changing to port directory: /opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/libmng DEBUG: Requested variant powerpc is not provided by port libmng. DEBUG: Requested variant darwin is not provided by port libmng. DEBUG: Requested variant macosx is not provided by port libmng. DEBUG: Found port in ​file:///opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/jpeg DEBUG: Changing to port directory: /opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/jpeg DEBUG: Searching for dependency: jpeg DEBUG: Found Dependency: receipt exists for jpeg DEBUG: Found port in ​file:///opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/lcms DEBUG: Changing to port directory: /opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/lcms DEBUG: Searching for dependency: lcms DEBUG: Found Dependency: receipt exists for lcms DEBUG: Executing com.apple.main (libmng) DEBUG: No TGZ archive: /opt/local/var/db/dports/packages/darwin/powerpc/libmng-1.0.8_0.powerpc.tgz DEBUG: Skipping unarchive (libmng) since no archive found DEBUG: Skipping completed com.apple.unarchive (libmng) ---> Fetching libmng DEBUG: Executing com.apple.fetch (libmng) ---> Verifying checksum(s) for libmng DEBUG: Executing com.apple.checksum (libmng) ---> Checksumming libmng-1.0.8.tar.gz DEBUG: Correct (md5) checksum for libmng-1.0.8.tar.gz ---> Extracting libmng DEBUG: Executing com.apple.extract (libmng) ---> Extracting libmng-1.0.8.tar.gz DEBUG: setting option extract.args to /opt/local/var/db/dports/distfiles/libmng/libmng-1.0.8.tar.gz DEBUG: Assembled command: 'cd "/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_graphics_libmng/work" && gzip -dc /opt/local/var/db/dports/distfiles/libmng/libmng-1.0.8.tar.gz | /usr/bin/gnutar --no-same-owner -xf -' DEBUG: Executing com.apple.patch (libmng) ---> Applying patches to libmng ---> Applying /opt/local/var/db/dports/sources/rsync.rsync.darwinports.org_dpupdate_dports/graphics/libmng/files/patch-autogen.sh DEBUG: Assembled command: 'cd "/opt/local/var/db/dports/build/_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dports_graphics_libmng/work/libmng-1.0.8" && patch -p0' patching file autogen.sh ---> Configuring libmng DEBUG: Executing proc-pre-com.apple.configure-configure-0 copying configure.in copying automake template running aclocal /opt/local/share/aclocal/gtk.m4:7: warning: underquoted definition of AM_PATH_GTK

run info '(automake)Extending aclocal' or see ​http://sources.redhat.com/automake/automake.html#Extending-aclocal

/opt/local/share/aclocal/glib.m4:8: warning: underquoted definition of AM_PATH_GLIB aclocal:configure.in:21: warning: macro `AM_PROG_LIBTOOL' not found in library running glibtoolize running automake configure.in: installing `./install-sh' configure.in: installing `./missing' Makefile.am:12: Libtool library used but `LIBTOOL' is undefined Makefile.am:12: Makefile.am:12: The usual way to define LIBTOOL' is to add AC_PROG_LIBTOOL' Makefile.am:12: to configure.in' and run aclocal' and `autoconf' again. building configure script configure.in:21: error: possibly undefined macro: AM_PROG_LIBTOOL

If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation.

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-1.0.8' && sh autogen.sh" returned error 1 Command output: copying configure.in copying automake template running aclocal /opt/local/share/aclocal/gtk.m4:7: warning: underquoted definition of AM_PATH_GTK

run info '(automake)Extending aclocal' or see ​http://sources.redhat.com/automake/automake.html#Extending-aclocal

/opt/local/share/aclocal/glib.m4:8: warning: underquoted definition of AM_PATH_GLIB aclocal:configure.in:21: warning: macro `AM_PROG_LIBTOOL' not found in library running glibtoolize running automake configure.in: installing `./install-sh' configure.in: installing `./missing' Makefile.am:12: Libtool library used but `LIBTOOL' is undefined Makefile.am:12: Makefile.am:12: The usual way to define LIBTOOL' is to add AC_PROG_LIBTOOL' Makefile.am:12: to configure.in' and run aclocal' and `autoconf' again. building configure script configure.in:21: error: possibly undefined macro: AM_PROG_LIBTOOL

If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation.

Warning: the following items did not execute (for libmng): com.apple.activate com.apple.configure com.apple.build com.apple.destroot com.apple.archive com.apple.install Error: /opt/local/bin/port: Status 1 encountered during processing.