Comment 6 for bug 1403758

Long discussions about #qt-labs, mostly between tsdgeos and tronical, about various things. Summarizing:

* <+tronical> tsdgeos: so I think something is wrong with the unit8 binary, my _guess_ is that it isn't built with -fPIC
-> it is built with -fPIC (and -fPIE, also asked about, "ok, that looks good")
* <+tronical> oh wait, there used to be a gcc ARM bug with copy relocations that affected this <+tronical> tsdgeos: could it be that qtbase 5.3 was built with -reduce-relocations and now it isn't anymore?
-> no, both 5.3 and 5.4 built _with_ -reduce-relocations
* binutils has had bugs, Ubuntu has the version with fixes
* -Bsymbolic-functions is system wide default in Ubuntu
-> "well, it explains where that comes from. it doesn't explain why the relocation in unit8 resolved to the wrong address"
* <+tronical> peppe, Mirv, tsdgeos: I realize that this is unrelated to -Bsymbolic-functions because this isn't about functions but a global symbol/variable
* <+tronical> peppe, Mirv, tsdgeos: this particular problem is new and different. QObject::staticMetaObject is a global symbol and here it resolves to two different addresses
* <+tronical> tsdgeos: still there? I have an idea how we may be able to find out where that bad pointer is coming from (it may not necessarily by the unity8 binary)

...to be continued.