You can checkout and compile Adium to get the required frameworks See http://trac.adiumx.com/wiki/GettingReleaseAdiumSource for more info on checking out the Adium source.
- Adium.framework
- AIUtilities.framework
- Fribidi.framework
You can download and compile libpcre yourself, or you can get it from the ObjPCRE SourceForge files
See http://fadeover.org/blog/archives/25 for more info on writing Adium plugins.