graphviz @2.24.0 Unable to build

[nicolas.forquet@…]

While trying to install octave port, failled to build graphviz: (I've Xcode 3.1.3 installed)

Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_graphviz/work/graphviz-2.24.0" && /usr/bin/make -j1 all " returned error 2
Command output: make[3]: Nothing to be done for `all'.
Making all in devil
make[3]: Nothing to be done for `all'.
Making all in gd
make[3]: Nothing to be done for `all'.
Making all in gdk_pixbuf
make[3]: Nothing to be done for `all'.
Making all in gdiplus
make[3]: Nothing to be done for `all'.
Making all in glitz
make[3]: Nothing to be done for `all'.
Making all in gs
make[3]: Nothing to be done for `all'.
Making all in gtk
make[3]: Nothing to be done for `all'.
Making all in lasi
make[3]: Nothing to be done for `all'.
Making all in ming
make[3]: Nothing to be done for `all'.
Making all in pango
make[3]: Nothing to be done for `all'.
Making all in quartz
/bin/sh ../../libtool --tag=CC   --mode=compile /usr/bin/gcc-4.0 -DHAVE_CONFIG_H -I. -I../..  -I../.. -I../../lib/common -I../../lib/pathplan -I../../lib/gvc -I../../lib/graph -I../../lib/cdt  -I/opt/local/include -I/opt/local/include  -O2 -arch i386 -fno-common -Wall -MT gvdevice_quartz.lo -MD -MP -MF .deps/gvdevice_quartz.Tpo -c -o gvdevice_quartz.lo gvdevice_quartz.c
 /usr/bin/gcc-4.0 -DHAVE_CONFIG_H -I. -I../.. -I../.. -I../../lib/common -I../../lib/pathplan -I../../lib/gvc -I../../lib/graph -I../../lib/cdt -I/opt/local/include -I/opt/local/include -O2 -arch i386 -fno-common -Wall -MT gvdevice_quartz.lo -MD -MP -MF .deps/gvdevice_quartz.Tpo -c gvdevice_quartz.c  -fno-common -DPIC -o .libs/gvdevice_quartz.o
In file included from gvdevice_quartz.c:23:
gvplugin_quartz.h:20:26: error: Availability.h: No such file or directory
make[3]: *** [gvdevice_quartz.lo] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Error: Status 1 encountered during processing.