> If my assumption is correct, is there any command or options I can use > to check where is the path that my gcc search for, since I always get > error messages as "cannot find stddef.h" ? If you use the -v option, gcc will print all the directories it's going to look for include files, including the ones you specify. On my system, it looks like: #include "..." search starts here: #include <...> search starts here: /home /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.1/include /usr/lib/gcc/i486-linux-gnu/4.4.1/include-fixed /usr/include End of search list. John G
