配置bugzilla错误

dujun

我在linux下配置bugzilla，需要安装DBD-Pg模块，我下载了DBD-Pg-1.49安装，解压后执行perl Makefile.PL，出现如下提示：
  
Configuring DBD:g1.49
Remember to actually read the README file!
Path to pg_config?
OS: linux
PostgreSQL version: 00000 (default port: 5432)
Could not determine the PostgreSQL library version.
Please ensure that a valid path is given to the 'pg_config' command,
either manually or by setting the environment variables
POSTGRES_DATA, PSOTGRES_INCLUDE, and POSTGRES_LIB

   之后执行make和make install都不能安装，分别出现make: *** No targets specified and no makefile found.  Stop.和make: *** No rule to make target `install'.  Stop.
提示信息。这是怎么回事啊？还请高手指点！！急！！！