Bruce Sherwood Pascal Grodowski wrote:
helloworld: main.o helloworld.o g++ -o helloworld main.o helloworld.o You must provide the libs if you create the executable from object files. Try: helloworld: main.o helloworld.og++ -o helloworld main.o helloworld.o `pkg-config gtkmm-2.4 --cflags --libs`instead of: helloworld: main.o helloworld.o g++ -o helloworld main.o helloworld.o