关于PG的PGXS

转自：http://blog.163.com/digoal@126/blog/static/16387704020122208374396/

If you are thinking about distributing your PostgreSQL extension modules, setting up a portable build system for them can be fairly difficult. 
Therefore the PostgreSQL installation provides a build infrastructure for extensions, called PGXS, 
so that simple extension modules can be built simply against an already installed server. 
PGXS is mainly intended for extensions that include C code, although it can be used for pure-SQL extensions too. 
Note that PGXS is not intended to be a universal build system framework that can be used to build any software interfacing to PostgreSQL; 
it simply automates common build rules for simple server extension modules. For more complicated packages, you might need to write your own build system