How do I install Dia on a Mac?

[Mihai Manea <mmmanea yahoo com>]

Hi,

I am using OS X 10.5.2, and I just can't manage to install Dia on my Mac. 

I installed Darwin Ports, and followed the instructions at http://dia.darwinports.com/, but I get the error 
message below.

Can anyone help me with detailed installation instructions?

Thanks.

dhcp-7-14:dia ****** cd /opt/local/bin/ports/gnome/dia
dhcp-7-14:dia ****** sudo port install dia
Password:
--->  Configuring expat
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_textproc_expat/work/expat-2.0.1"
 && ./configure --prefix=/opt/local --mandir=/opt/local/share/man " returned error 77
Command output: checking build system type... i386-apple-darwin9.2.2
checking host system type... i386-apple-darwin9.2.2
checking for gcc... /usr/bin/gcc-4.0
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.

Error: The following dependencies failed to build: gtk2 atk gettext expat libiconv gperf ncurses ncursesw 
glib2 pkgconfig cairo fontconfig freetype zlib libpixman libpng render xrender jpeg pango Xft2 xorg-xproto 
xorg-util-macros shared-mime-info libxml2 p5-xml-parser perl5.8 tiff libart_lgpl libxslt popt
Error: Status 1 encountered during processing.