I'm doing a university project with postgres. I need to add a C++ file to the postgres optimizer. When I added this file (XXX.cc), I got make errors. To figure out the problem I did some simple tests. I removed everything in the file except for a simple function and changed the CPP variable in Makefile.gloabl from gcc to g++ and it worked. However, when I add #include <iostream> or calls to cout, etc to my file, I get link errors. I'd appreciate it if anyone could help me with this problem (adding a C++ file that uses some C++ libraries to postrges). I'm using postgres 8 on Debian.