------------ libtest ------------
./libtcc_test lib_path=..
<string>:11: warning: implicit declaration of function 'printf'
<string>:13: warning: implicit declaration of function 'add'
------------ test3 ------------
tcctest.c:1982: warning: implicit declaration of function 'putchar'
tcctest.c:2133: warning: implicit declaration of function 'strlen'
We are now compatible with the 0.9,25 version though. A special
value for the second (ptr) argument is used to get the simple
behavior as with the 0.9.24 version.