On Thu, 24 Apr 2014, Eric Botcazou wrote: > > Meanwhile is does the patch look ok? > > No, the current wording is just fine and yours doesn't bring anything (even > the contrary, since you're listing known problematic versions). This will > also break http://gcc.gnu.org/install/specific.html#sparc-x-x
Ah, I didn't see that. So the issue here is that the host compiler miscompiles the in-tree copy? Maybe we should compile host libraries with -O0 during stage1 (and require recent host GCC for compiling cross compilers - which we probably do anyway). It's an issue anyway as soon as we bump the versions downloaded by contrib/download_prerequesites. What "newer" versions are affected, btw? Are "very newer" versions fixed maybe? > I don't see why we should special case GMP, MPFR and MPC here, look at all > the > other dependencies on http://gcc.gnu.org/install/prerequisites.html > > And IIUC the real issue is that ftp://gcc.gnu.org/pub/gcc/infrastructure/ > contains obsolete versions. Hmm, ok. Is the piece referencing contrib/download_prerequesites and documenting that as the recommended way to setup and do in-tree builds? Generally we have conflicting goals - we want to make sure GCC works with system supplied versions of the libraries (thus the configure version checks), and we want to specify versions that work for the in-tree builds (because of the somewhat awkward setup of the build because of their inter-dependencies and not doing intermediate installs). -- Richard Biener <rguent...@suse.de> SUSE / SUSE Labs SUSE LINUX Products GmbH - Nuernberg - AG Nuernberg - HRB 16746 GF: Jeff Hawn, Jennifer Guild, Felix Imend"orffer