-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello Robin, have you tried swapping the order of the libraries like: g++ myapp.o /mylib/libB.a /mylib/libA.a -o myapp Regards. En/na RobinK ha escrit: > Apologize first if this has already been asked before. > > Here is my issue: I have two libraries, libA and libB, in libB there is a > class inherit from a class in libA and calls one of A's member function. so > like this: > In A.h: > class A{ > public: > void func1() ; > } > > In A.cpp: > > void A::func1(){ > ... > } > > In libB: > B.h: > > class B : public A{ > public: > void func2() ; > } > > B.cpp: > > void B::func2(){ > func1() ; > ... > } > > I found I have trouble linking these two libraries together with my final > binary. If I link my binary against libA.o and libB.o everything works fine, > but if I do something like this: > g++ /mylib/libA.a /mylib/libB.a myapp.o -o myapp > It would complain: > /mylib/libB.a undifined reference to func1() > > Is this to be expected? That I am supposed to use .o file instead of .a > file? > > Thanks! -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAksiXj8ACgkQwMPeuqUCg9ySIQCfalxw7Ft9ZkZlnMICh7Betacm lpsAn2p4CJ3zPILV76//YcGAy1lBO7u1 =2rC7 -----END PGP SIGNATURE-----