> 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).
In-tree is a red herring, very few people do that. People download libraries, compile them with the base compiler, install them and bootstrap the compiler. > 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? GMP 5.x is known to be problematic on SPARC, I don't know for 6.x. > 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). Agreed, but the current situation is relatively satisfactory if you ask me. If something needs to be changed because of web/60933, then it's probably the versions provided at ftp://gcc.gnu.org/pub/gcc/infrastructure/ -- Eric Botcazou
