On Thu, 23 Apr 2009, David Ronis wrote: > Thanks for the reply. On the other hand, it seems that PPL and Cloog > are auto-detected by configure; shouldn't that be enough to dynamically > modify what -O3 does (or perhaps enable -O4)? On a related point, > having used my old build script to build gcc I, of course, didn't read > the prerequisites section. I have to rebuild right?
The whole point is that gcc -O3 should not depend on what was detected at configure time; everyone's gcc -O3 (with the same configure options) should behave the same way to avoid mysterious problems appearing only for some people (unreproducible bug reports, etc.) depending on what they had installed when GCC was built. -- Joseph S. Myers jos...@codesourcery.com
