Guillaume Munch wrote: > Starting from 2.3, LyX will require a C++11 compiler, and g++ 4.6 fails > (it seems) at a feature as elementary as generating a default move > constructor, even when told so explicitly (which we cannot really blame > it for, given that it does not claim C++11 compliance in the first > place). Moreover, the only distribution release that is currently stuck > with g++ 4.6 is (to my knowledge) Ubuntu 12.04LTS, which will no longer > be around by the time 2.3 ships (unless a miracle happens), and which > offers another compiler more respectful of C++11. On the other hand, > what reasons do we have for supporting g++ 4.6? > > If you really need a temporary workaround until you get to migrate your > work environment, (and you do not want to/can use clang,) you could keep > a local series of fixes. I imagine that for your current sort of problem > (as far as I understand, because I do not have access to g++ 4.6 to test > my theory), you just need manual definitions of move constructors and > assignment operators. For e87febd0 in particular, however, it is easier, > because it should be safe to just revert it locally, given that this is > an isolated change.
Thanks for summarizing. I can confirm that reverting e87febd0 makes master compilable again with 4.6. I am not in charge for the machines around me and given 12.04 LTS ends up 2017-04 I don't expect any migration happening soon :) So I guess the bad news is I can't quickly bisect what's going on 32 cores anymore, the good news is I'll get more real work done :) Pavel
