On Feb 25, 2:19 pm, Paul Pluzhnikov <[EMAIL PROTECTED]> wrote: > "vivekian" <[EMAIL PROTECTED]> writes: > > These are the steps i followed to create a shared library > > These steps are un-necessarily complicated. > You are (apparently) following some DSO-HOWTO, but without > understanding why things are done in "complicated" way, and whether > that complicated way is appropriate for your situation. > > > g++ -shared -Wl,-soname,libcppsocket.so.1 -o libcppsocket.so.1.0.1 > > SockException.o Socket.o TcpSocket.o UdpSocket.o SocketReaderWriter.o - > > lc > > Until you need "external library versioning", I suggest you use > "simple" way: > > g++ -shared -o libcppsocket.so \ > SockException.o Socket.o TcpSocket.o UdpSocket.o SocketReaderWriter.o > > > 5. Compiling this test program > > > g++ main.cpp > > /tmp/ccPqeVa9.o: In function `main': > > main.cpp:(.text+0x8a): undefined reference to `TcpSocket::TcpSocket()' > > main.cpp:(.text+0x95): undefined reference to > > `TcpSocket::~TcpSocket()' > > collect2: ld returned 1 exit status > > > gives the above error. > > > This i suppose indicates that the library has to be linked. > > Correct. > > > But the following doesnt help > > g++ main.cpp -llibcppsocket > > And it shouldn't help. Provided /usr/lib/libcppsocket.so exists, > correct link line is: > > g++ main.cpp -lcppsocket > > > What am i missing here ? > > Well, for starters you didn't tell us (nor paid attention to) > the error linker gave you, which likely was: > > /usr/bin/ld: cannot find -llibcppsocket
Yes, you are right , i didnt mention that , but yes i did notice it. > > Please read "info gcc" to understand what library the linker will > search for given '-llibcppsocket' argument. Hint libcppsocket.* > it is not. I did. This is the relevant portion i guess : "The only difference between using an -l option and specifying a file name is that -l surrounds library with lib and .a and searches several directories" That solved the problem. It compiles fine. I was following a HowTo without understanding :) . Thanks a ton . Appreciate it. vivekian _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
