C++ boost libraries shared_memory_object undefined reference to 'shm_open'

Question

I tried to compile the following code on ubuntu 11.04:

#include  
#include  

int main() 
         


        

Answer 1

shm_open is made available by linking librt. Try passing -lrt flag to the linker.

Try: g++ -c -Wall shared.cpp

g++ -L /lib -lrt shared.o -o shared