Thanks!

Yes, I can! Although I can't find try.c in perl install directory, I note below command in Configure:

cat <<'EOSC' >>trygcc
case "$cc" in
'') ;;
*)  $rm -f try try.*
    $cat >try.c <<EOM
int main(int argc, char *argv[]) {
  return 0;
}
EOM
    if $cc -o try $ccflags $ldflags try.c; then
       :
    else
        echo "Uh-oh, the C compiler '$cc' doesn't seem to be working."
+ >&4
[download]

So I create a new try.cc and run cc -o try try.c successfully. It seem $cc, $ccflags and $ldflags has not been set appropriately. uh? How can I do next?