Don’t put neither main.cpp nor header.cpp into include, put them into src. Only headerfiles belong into include. Then you don’t need
build_flags = -I include
Please see also Use headers give me an error
Don’t put neither main.cpp nor header.cpp into include, put them into src. Only headerfiles belong into include. Then you don’t need
build_flags = -I include
Please see also Use headers give me an error