Yes. is the trunk version , I updated to day with this command:
svn co
https://babel.svn.sourceforge.net/svnroot/babel/trunk babel
then autogen.sh, and the same error:
checking for ANSI C header files... (cached) yes
./configure: line 20992: syntax error near unexpected token `BABEL,'
./configure: line 20992: `PKG_CHECK_MODULES(BABEL,'