ARDUINO=100;%(PreprocessorDefinitions); NoExtensions $(MSBuildThisFileDirectory)\include;%(AdditionalIncludeDirectories) $(MSBuildThisFileDirectory)\include\avr;%(AdditionalIncludeDirectories) $(MSBuildThisFileDirectory)\include;%(AdditionalIncludeDirectories) $(MSBuildThisFileDirectory)\include\avr;%(AdditionalIncludeDirectories)