On 02.08.2010 14:00, Ulrich Weigand wrote:
> Loïc Minier<loic.min...@linaro.org> wrote:
>> and I think
>> Debian/Ubuntu toolchains cheat in some areas; for some directories
>> which would use $(version) we use $(major).$(minor) instead, and we
>> have a $(version) -> $(major).$(minor) symlink. This doesn't really
>> relate to the multiarch topic, but it reminds me that we ought to fix
>> the distro divergences so that it's easier to swap an upstream
>> toolchain with a Debian/Ubuntu one and vice-versa.
>
> Agreed. Not sure what this particular divergence helps ...
this is no "cheating". It makes the packages robust. Remember that some
frontends are built from different source packages and that a gnat-4.4 (4.4.4)
still needs to be buildable with a gnat-4.4 (4.4.3) and an already updated
gcc-4.4 (4.4.4). The directory cannot just be changed because the name/version
is still exposed with the -V option. There was some discussion to drop this
one
altogether, then something like a version_alias corresponding to the
target_alias could be introduced.
Of course linaro could build all frontends from one source, but then the two
following issues have to be addressed:
- gcj/libjava has to be built in arm mode even if gcc defaults
to thumb mode.
- build gnat from the linaro sources (this may be a problem with the
bootstrap compiler, didn't investigate yet).
Matthias
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