On Sun, 23 May 2010, Da Zheng wrote:
da-zhengs-macbook:tmp dazheng$ gcc -o test test.c
Undefined symbols:
"___sync_val_compare_and_swap_4", referenced from:
_main in ccyxRK5Y.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
I use macbook and it has Intel Dual core. My GCC version is 4.4.1. Could anyone
tell me why __sync_val_compare_and_swap cannot be used. Thank you.
You probably need an appropriate -march flag (386, which the compiler may
target by default, doesn't have the instructions).
