[janoc]

Well, unfortunately the fact the clang/llvm generates nice looking error messages doesn't help Windows developers using Visual C++ at all.

And obscure platforms - are you targetting those as a priority? That could explain your choice of build system. On the other hand, the obscure platforms tend to have old, noncompliant C++ compilers and STL, so I am not completely sure how is that going to work together with your C++11 requirement. For me an "obscure platform" would be something like an IRIX 6.5, Solaris or some embedded hardware. Good luck with requiring C++11 there.

Of course, you could be targeting an obscure platform in the sense that it is one of the few that actually ships with fully C++11 compliant compiler, but then good luck with wide adoption of your software ...

Re compile errors vs runtime errors - agreed, even though most runtime errors related to moc in Qt are things like connecting to non-existing slot. That generates only an error message in console/log, it is not a fatal error.

However, moc gets you faster compilation time (heavily templated C++ takes ages to compile - just look at Boost) and more readable/idiomatic code. And then there is the portability issue to older compilers - templates were traditionally the poster child for poor/incomplete implementations by the compiler vendors.