On July 17, 2015 6:54:32 PM GMT+02:00, Ulrich Weigand <uweig...@de.ibm.com> wrote: > >So do we now consider host compilers < 4.3 (4?) unsupported for > >building > >mainline GCC, or should we try to work around the issue (e.g. by moving > >the allocator out-of-line or using some other aliasing barrier)? > > Why is this an issue for stage1 which runs w/o optimization?
Well, this is the SPU compiler on a Cell system, which is technically a cross compiler from PowerPC (even though the resulting binaries run natively on the machine). > For cross compiling we already suggest using known good compilers. The documentation says: To build a cross compiler, we recommend first building and installing a native compiler. You can then use the native GCC compiler to build the cross compiler. The installed native compiler needs to be GCC version 2.95 or later. So building with a native GCC 4.1 seems to have been officially supported until now as far as I can tell (unless you're building Ada). Now, I could certainly live with a statement that cross compilers can only be build with a native GCC 4.3 or newer; but that should be IMO a deliberate decision and be widely announced (maybe even verified by a configure check?), so that others don't run into the problem; the nature of its symptoms make the problem difficult to diagnose. Bye, Ulrich -- Dr. Ulrich Weigand GNU/Linux compilers and toolchain ulrich.weig...@de.ibm.com
