On Fri, Aug 05, 2011 at 06:51:12PM -0700, Ian Lance Taylor wrote: > Thomas Koenig <tkoe...@netcologne.de> writes: > > > I just noticed that C++ now appears to be built by default, even when > > only the C and fortran are specified. The configure line > > > > > > ../trunk/configure --prefix=$HOME --enable-languages=c,fortran > > --with-mpc=/usr/local --with-mpfr=/usr/local > > > > leads to the message > > > > checking for version 0.11 (revision 0 or later) of PPL... no > > > > The following languages will be built: c,c++,fortran,lto > > > > I see recent changes by Ian in this area, but nothing in the ChangeLog > > suggests to me that this was intentional. > > It is intentional. In current mainline stages 2 and 3 are now by > default built with the C++ compiler, not the C compiler. Therefore, the > C++ compiler must be built in stages 1 and 2, in order to use to build > the stages 2 and 3 compiler. And then of course we build the C++ > compiler in stage 3 in order to compare it. > > The ChangeLog entry says that if --enable-build-poststage1-with-cxx is > set, C++ becomes a boot language. That is what you are seeing. I guess > what the ChangeLog entry does not say is that > --enable-build-poststage1-with-cxx is set by default. >
What are the additional resource requirements? Some of us have old hardware and limited $. -- Steve
