10.7 Lion, 10.6 Snow Leopard and 10.4 Tiger users: The latest SaVi release and development code (18 December 2007 and later) runs well under your operating systems, as shown in the screenshot below at end. The -redrawn-menus flag is not required.
10.5 Leopard users: The latest SaVi 1.4 release requires and automatically invokes the -redrawn-menus flag under 10.5 Leopard to avoid a Tk menu problem.
The following instructions tell you how to install SaVi.
gcc C compiler installed? Run Terminal from your Applications/Utilities folder and type which gcc to find out.
/usr/bin/gcc isn't returned, you will need to install Apple's developer tools to get the gcc compiler and Tcl/Tk.
Xcode > Preferences > Downloads > Components > Command Line Tools
gcc, you should be able to download SaVi 1.4.5, unpack it with tar xvfz savi1.4.5-release.tar.gz (if Safari has uncompressed the file tar xvf suffices) and then:cd savi1.4.5make ARCH=macosx
Mac-specific problems are discussed in detail in the BUGS textfile.