Undefined reference to symbol, even though the library is linked

Question

When linking a project I am working on, the linker gives the following errors:

/usr/bin/ld: ../Includes and Libs/lib/libsfml21rca.a(SoundFile.o): undefined refer         


        

Answer 1

The linker only runs one pass over the library files. So if you have something in Library A that needs something in Library B, you need to have g++ objects... -llibA -llibB, if you use g++ objects... -llibB -llibA it will fail in the manner you show.

So, in your case, put the -lsndfile after "../Includes and Libs/lib/libsfml21rca.a".

(And whose idea was it to put spaces in a the "Includes and Libs" directory - not the best idea I've seen...)