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bootstrapping a C++ compiler (was: Selecting a C++ compiler)
I'm starting a subthread for GCC bootstrapping issues.
EF> -- We need to assure gcc-inplace-math (and -nls) when building GCC as a
EF> build dependency, either by making that the default or temporarily
EF> overriding the options.
GT> That is the perhaps controversial point.
What's controversial about this? Without inplace-math, we install packages
providing libraries compiled with a lower GCC version, which renders them
Or do you think the nls part is controversial?
> So do you think we need two versions, the "real" gcc6, and the
> "bootstrap" gcc6? Two packages from same source? Something else?
I think the easiest solution would be to make lang/gccX use
PKG_OPTIONS.gccX-bootstrap instead of PKG_OPTIONS.gccX if it's being
The tricky part (it occurs to me) is what "it's being bootstrapped" means.
I think the answer is "it's the Single Version" (or, regarding C, "one of
the two Single Verssions") AND "it's not installed as a package". So, if
you like lang/gcc6 (supposing that's one of your Single Versions) with nls,
you can build lang/gcc6 with that set of options, which will first build
your Single Version with the bootstrap options and then use that to copile
the final version.
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