Goanna GTKmm Version Requirements

Goanna requires at GTKmm version 2.6 or later. To dispell a little confusion: GTKmm has 2 version numbers. One is the API version, and one is the version of GTKmm iteself. GTKmm 2.6 is version 2.6, but its API version is 2.4 (since it is backwards-compatible with 2.4). Because of this, you need libgtkmm-2.4-dev version 2.6 or greater on Debian.

Older versions of GTKmm

It should be possible to support GTKmm 2.4. The attached patch from Troy identifies a number of items that fail to build under GTKmm 2.4.

GTKmm versions prior to 2.4 are not supported, nor is it likely realistic to do so.