Bug#952718: qtcreator: Clang code model fail to find stddef.h if libclang-common-8-dev package is not installed

[Lisandro Damián Nicanor Pérez Meyer]

Hi!

I have discussed this with KDevelop's maintainer.

As Alexis states the code parser will not work with c++ projects if
the clang headers are not there. On the other hand if the c++ project
is using gcc instead of clang to build the wrong headers would be
displayed (even if the headers are meant to track gcc's ones, they are
still not the originals).

Following the same criterion as for another dependencies: Qt Creator
is not *just* a C++ IDE, so anyone wanting to add the relevant headers
should either install Recommends by default or proceed to install them
by hand.

Ideally we should be able to depend upon the same clang/llvm version
qtcreator was built with, without having to resort to regular
expressions or alike to modify debian/control on each upload. I have
not checked if this is doable yet, but will try to do it.

I expect the fix to be present in the next Qt Creator version I'll be
pushing to unstable, for which I do not have an ETA due to lack of
time.

Kinds regards, Lisandro.