On large projects involving several applications/libraries, it is customary to run cppcheck on each individually, to obtain multiple xml files. The cppcheck Jenkins plugin can aggregate all these together which is great. (With wildcard support too! Awesome!)

What isn't so great is that sometimes the same error (like "noExplicitConstructor") shows up in several xml files for the same location (usually in a library header file). It seems like when multiple errors with the same id and same location(s) are present, only one needs to be shown. (This will only occur when using multiple xml files, since I believe cppcheck filters out the duplicates in each individual xml file.)