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Re: Recent libstdc++ regression on i686-linux: abi/cxx_runtime_only_linkage.cc
"H.J. Lu" wrote:
> For Linux/x86, if gcc is configured for xxx-*-linux, the default arch should
> be xxx for both 32bit and 64bit, where xxx can be i[3456]86, pentium, ...
> x86-64. Is someone working on such a patch?
IMHO making this Linux specific just replaces one confusing and
arbitrary decision with another. Why should --target=i686-*-linux imply
-march=686 when, say, --target=i686-*-freebsd or --target=i686-*-elf
still implies -march=386? If you want to imply a default -march from
the target specification (and I think that's a perfectly good thing to
want to do) then it should apply to all x86 targets equally. If that's
too radical of a change then just bumping the universal default to 486
seems like the next best thing -- at least that's consistent.
Brian