axe-mbp:~ work$ sudo port install yelp
--->  Configuring yelp
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_gnome_yelp/work/yelp-2.24.0" && ./configure --prefix=/opt/local --with-gecko=libxul " returned error 1
Command output: checking whether -R must be followed by a space... no
checking for gethostbyname... yes
checking for connect... yes
checking for remove... yes
checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking for YELP_SEARCH... no
checking for gzopen in -lz... yes
checking for lzmadec_open in -llzmadec... yes
checking for bzread in -lbz2... no
checking for BZ2_bzread in -lbz2... yes
checking for gawk... (cached) awk
checking which gecko to use... libxul
checking manual gecko home set... checking for compiler -fshort-wchar option... yes
checking whether to enable C++ RTTI... no
checking whether we have a gtk 2 gecko build... yes
checking whether we have a gecko debug build... no
checking whether we have a xpcom glue... no
checking for gecko version... 1.9
checking for MOZILLA_COMPONENT... configure: error: Package requirements (libxul-xpcom >= 1.9 ) were not met:

No package 'libxul-xpcom' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables MOZILLA_COMPONENT_CFLAGS
and MOZILLA_COMPONENT_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.


Error: Status 1 encountered during processing.