[syslog-ng] errors running configure for incubator on Ubuntu 12.04

rful011@secmontst01:~/src/syslog-ng-incubator$ ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane… yes [ snip ] checking whether g++ accepts -g... yes checking dependency style of g++... gcc3 checking for inline... inline ./configure: line 4534: syntax error near unexpected token `shared' ./configure: line 4534: `LT_INIT(shared dlopen)’ I have looked at configure and config.log to try and figure out what it is actually checking for. ‘inline’ is to generic to google for :( any ideas what is wrong? Russell