I'm hitting dumb stuff that arises from my unfamiliarity with working in a 32/64-bit split universe on a Solaris box. Is there some magic phrase I can tell configure that will make it realise I want to pick up the 32-bit /opt/mysql50/include/mysql include files, and not the include files that lives at /usr/sfw/include/mysql that it seems to prefer? I can go around editing Makefiles, or even install my own 32-bit mysql client, but there has to be a better way. Or maybe the information here is out of date: http://meta.wikimedia.org/wiki/Toolserver/For_users#software It suggests that I should link to the /opt/mysql50 code for a 32-bit build. if there's some amazing advantage to compiling all my code for 64 bits, please feel free to convince me. In private email. I think it more likely that I'm just being dumb.