Code seemed right, but for some reason the folder path was empty:
[ 5%] Building CXX object CMakeFiles/kdevclangtidy.dir/src/plugin.cpp.o
/usr/bin/c++ -DKCOREADDONS_LIB -DQT_CORE_LIB -DQT_DBUS_LIB
-DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_WIDGETS_LIB
-DQT_XML_LIB -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -Dkdevclangtidy_EXPORTS
-I/home/tcanabrava/Projects/kdesrc/build/kdev-clang-tidy
-I/home/tcanabrava/Projects/kdesrc/kdev-clang-tidy -I/src
the -I/src should have been:
-I/home/tcanabrava/Projects/kdesrc/kdev-clang-tidy/src
my setup is:
Projects/sources/blah
Projects/builds/blah
Maybe the current way worked with inner build folders.
Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>