[Bug bootstrap/51503] [4.7 Regression] Failure to build (non-bootstrap) gcc libitm if only building C

[rth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51503

--- Comment #2 from Richard Henderson <rth at gcc dot gnu.org> 2011-12-12 
18:10:10 UTC ---
Odd.  I thought this was supposed to happen automatically with

lang_env_dependencies = { module=libitm; cxx=true; };

in Makefile.def.