macos – 在Max OSX Yosemite中尝试“pip install psycopg2”时

这是我尝试在我的virtualenv中安装它时得到的错误：

Downloading/unpacking psycopg2
Downloading psycopg2-2.5.4.tar.gz (682kB): 682kB downloaded
Running setup.py     (path:/Users/adfelix2/Documents/Hindsait_Work/Projects/nybc_pilot/build/psycopg2/setup.py) egg_info for package psycopg2

    Error: pg_config executable not found.

    Please add the directory containing pg_config to the PATH
    or specify the full executable path with the option:

    python setup.py build_ext --pg-config /path/to/pg_config build ...

    or with the pg_config option in 'setup.cfg'.
    Complete output from command python setup.py egg_info:
    running egg_info

creating pip-egg-info/psycopg2.egg-info

writing pip-egg-info/psycopg2.egg-info/PKG-INFO

writing top-level names to pip-egg-info/psycopg2.egg-info/top_level.txt

writing dependency_links to pip-egg-info/psycopg2.egg-info/dependency_links.txt

writing manifest file 'pip-egg-info/psycopg2.egg-info/SOURCES.txt'

warning: manifest_maker: standard file '-c' not found



Error: pg_config executable not found.



Please add the directory containing pg_config to the PATH

or specify the full executable path with the option:



    python setup.py build_ext --pg-config /path/to/pg_config build ...



or with the pg_config option in 'setup.cfg'.

----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in         /Users/user/'privateinfo'/my_virtualenv/build/psycopg2
Storing debug log for failure in /Users/user/.pip/pip.log

好像我需要在pg_config中添加一个目录？但是,我无法在网上遇到任何有助于我这样做的事情.如果有人对此有一个答案,一步一步地表示非常高兴.谢谢.