I'm biased due to the performance constraints I work with and actually liking templates for the most part (apart from a few silly restrictions on specialization), but here's how I've solved some of those pain points for myself. I can't stand CMake, but quite enjoy using Meson (though small projects are just fine with a simple build script in bash or whatever you prefer). Error messages and editor integration are largely fixed by the Clang ecosystem, which have also enabled some excellent editor plugins (I use EasyClangComplete for Sublime, there are equivalents for every major editor now). When I care about Windows compatibility, I also use VS2017, which is a great improvement over previous versions and doesn't impose major constraints in terms of standard compliance any more. Perf and VTune satisfy all of my profiling needs.
Overall, I feel like the ecosystem utility / tooling situation has improved hugely over the past few years, to the point where it's comparable to any other language out there, though at the expense of requiring some user effort in choosing tools and getting a bit used to them. That's just my personal opinion, though, YMMV.
This seems reasonable. It's been more than a few years since I got out of the C++ game, and I never really kicked the tires on Meson. I'm truly happy to hear that things are improving for C++; I really liked the language (complex as it was), but I couldn't get anything done because of the ecosystem.
Overall, I feel like the ecosystem utility / tooling situation has improved hugely over the past few years, to the point where it's comparable to any other language out there, though at the expense of requiring some user effort in choosing tools and getting a bit used to them. That's just my personal opinion, though, YMMV.