[Bug bootstrap/54419] [4.8 Regression] Compiling libstdc++-v3/src/c++11/random.cc fails on platforms not knowing rdrand

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54419

--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-09-06 
14:58:25 UTC ---
Well, it is using autotools, the decision whether to put the stuff into
autoinclude.m4 and reference in configure.ac, or put in full just into
configure.ac is pure esthetical thing.