[Bug bootstrap/49829] [4.7 Regression] --disable-static --enable-shared regression: cannot find -lstdc++

[vbyakovl23 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49829

--- Comment #26 from Vladimir Yakovlev <vbyakovl23 at gmail dot com> 2012-02-13 
09:59:31 UTC ---
We have performance degradation of 447.dealII benchspec 2006.It was happened
because there are no inlining a library routine '_Rb_tree_node_base' from
libstdc++-v3/src/tree.cc

const _Rb_tree_node_base*  _Rb_tree_increment(const _Rb_tree_node_base* __x)
throw ()
{    
  return Rb_tree_increment(const_cast&lt;_Rb_tree_node_base*&gt;(_x));
}

I found out that the degradation is caused by absence of -fPIC flag in
compilation command line. If I add the flag to command line the inlining is
happened.