PL/php

When trying to build plphp I've got this:

$ make -s
In file included from plphp.c:64:
/usr/include/php5/main/php.h:278: error: âDebugâ redeclared as different kind of symbol
/usr/local/pgsql//include/server/tcop/dest.h:83: error: previous definition of âDebugâ was here
...

I'm running php 5.1 (php5-dev Ubuntu package) and postgresql 8.0. This is clearly a conflict between symbol definitions in PHP and PostgreSQL sources. However, with postgresql 8.1 plphp builds successfully, because tcop/dest.h doesn't have 'Debug' symbol there (from the PHP side of things, every PHP distro I have seen so far had Debug declared in php.h). We should fix this or require postgresql 8.1 and above.