When building KBibTeX with clang, I get this error websearchabstract.cpp:69:63: error: addition of default argument on redeclaration makes this constructor a default constructor that can also be seen here: http://clang.debian.net/logs/2016-08-30/kbibtex_0.4-4_unstable_clang.log Reproducible: Always
KBibTeX version 0.4 is no longer maintained. Please try a more recent version. I may apply changes to 0.5 if necessary, but 0.6 is the official stable and supported version as of now.
No update on this bug report, refers to old version. Please re-open this bug if you still have this problem with a current version of KBibTeX.