Mac OS X
This is a Mac OS X diskimage. It is suitable for 64-bit Intel Macs (i.e. all vaguely new models - see Apple's site for how to check). It was built on OS X 10.10.1, but has been reported to work on older versions. The oldest we've heard of was 10.6.8 - if you try it on an older release, please let us know if it works or not.
If you want to build it yourself, you'll need to make sure you have
Apple's Xcode installed
(which costs nothing), then download the Survex source code, unpack it and
tar zxf survex-1.2.20.tar.gz cd survex-1.2.20 ./buildmacosx.sh
If you want to build for much older Macs (Intel processors which aren't 64-bit capable, or PowerPC), you'll need to specify that like so:
webmaster: Olly Betts