Sample Code - Using shared libs on UNIX


Sample C code for :

1. Creating a shared library
2. Runtime loading of a shared library
3. Calling a method from the loaded library


On GNU/Linux :

share.c

cc -fPIC -c share.c -o share.o
ld -shared share.o -o share.sl

main.c [ using dlopen(), dlsym() ]

cc main.c -o main -ldl

On HP-UX :

share.c

cc +z -c share.c -o share.o
ld -b share.o -o share.sl

main.c [ using shl_load(), shl_findsym() ]

cc main.c -o main

The linux sample code should work for other UNIX flavours, which use dlopen()/dlsym(). Only HP-UX uses shl_load()/shl_findsym(). Please look at the man pages of cc and ld for the correct flags to be used for the particular version of UNIX.