make warnings (prototype compatability) a problem?

Newbie compiling question here. While compiling php, we are getting lots of warnings from about every --with-xxx library we are compiling in, such as: warning: argument #1 is incompatible with prototype AND initialization type mismatch These mostly seem to be discrepancies between files in the php source tree and the installed support library header files. My question is, generally, are these things to worry about? Will it cause strange problems while PHP is running? I can provide exact module lists/gmake output if need be, but it's happening a lot and I don't want to include it unless asked. thanks! ivo goop AT scs DOT unr DOT edu