Problem: Coverage with coveralls not working

[kurdybacha]

Solution: Enable coveralls for one linux build target and fix coveralls
configuration.

[coveralls]

Pull Request Test Coverage Report for Build 115

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 30 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+22.0%) to 85.673%

---

Files with Coverage Reduction	New Missed Lines	%
zmq.hpp	30	78.54%

Totals
Change from base Build 113:	22.0%
Covered Lines:	293
Relevant Lines:	342

---

💛 - Coveralls

[sigiesec]

@kurdybacha Thanks a lot for working on this. Unfortunately, it is still not right. For example, https://coveralls.io/builds/17296150/source?filename=zmq.hpp#L737 is still not shown as uncovered. Indeed, I think (almost?) all functions that are not used do not appear in the coverage report. I tried a bit around with lcov to get this working, following the hints at https://stackoverflow.com/a/19792966, but it did not work out either :(

[kurdybacha]

Yes, it is still broken :( will take a look again on this. Thanks for the link, it might be helpful.