各位好：

我使用下列命令建立和进入虚拟环境：

(1)virtualenv homepage

(2). homepage/bin/activate && cd homepage

然后，我一个内容如下的request文件拷贝如homepage，request内容如下：

Flask==0.10.1 Flask-Admin==1.0.7

Flask-Auth==0.85

Flask-OAuth==0.12

Flask-SQLAlchemy==1.0

Markdown==2.4

WTForms==1.0.5

alembic==0.6.3

ipython==1.2.1

nose==1.3.0

psycopg2==2.5.2

当我使用pip install -r request安装上述软件时，报出如下错误，请帮我看看是怎么回事呢？

(homepage)duqi@Lenovo-G480:~/python/homepage$ pip install -r requests

Downloading/unpacking Flask==0.10.1 (from -r requests (line 1))

Downloading Flask-0.10.1.tar.gz (544Kb): 544Kb downloaded

Running setup.py egg_info for package Flask

warning: no files found matching '*' under directory 'tests'

warning: no previously-included files matching '*.pyc' found under directory 'docs'

warning: no previously-included files matching '*.pyo' found under directory 'docs'

warning: no previously-included files matching '*.pyc' found under directory 'tests'

warning: no previously-included files matching '*.pyo' found under directory 'tests'

warning: no previously-included files matching '*.pyc' found under directory 'examples'

warning: no previously-included files matching '*.pyo' found under directory 'examples'

no previously-included directories found matching 'docs/_build'

no previously-included directories found matching 'docs/_themes/.git'

Downloading/unpacking Flask-Admin==1.0.7 (from -r requests (line 2))

Downloading Flask-Admin-1.0.7.tar.gz (330Kb): 330Kb downloaded

Running setup.py egg_info for package Flask-Admin

warning: no previously-included files matching '*.pyc' found under directory 'flask_admin'

Downloading/unpacking Flask-Auth==0.85 (from -r requests (line 3))

Downloading Flask-Auth-0.85.tar.gz (46Kb): 46Kb downloaded

Running setup.py egg_info for package Flask-Auth

warning: no previously-included files matching '*.pyc' found under directory 'flaskext'

warning: no previously-included files matching '*.pyc' found under directory 'examples'

no previously-included directories found matching 'docs/_build'

Downloading/unpacking Flask-OAuth==0.12 (from -r requests (line 4))

Downloading Flask-OAuth-0.12.tar.gz

Running setup.py egg_info for package Flask-OAuth

Downloading/unpacking Flask-SQLAlchemy==1.0 (from -r requests (line 5))

Downloading Flask-SQLAlchemy-1.0.tar.gz (92Kb): 92Kb downloaded

Running setup.py egg_info for package Flask-SQLAlchemy

warning: no previously-included files matching '*.pyc' found under directory 'docs'

warning: no previously-included files matching '*.pyo' found under directory 'docs'

no previously-included directories found matching 'docs/_build'

no previously-included directories found matching 'docs/_themes/.git'

Downloading/unpacking Markdown==2.4 (from -r requests (line 6))

Downloading Markdown-2.4.tar.gz (260Kb): 260Kb downloaded

Running setup.py egg_info for package Markdown

Downloading/unpacking WTForms==1.0.5 (from -r requests (line 7))

Downloading WTForms-1.0.5.zip (355Kb): 355Kb downloaded

Running setup.py egg_info for package WTForms

warning: no previously-included files matching '*' found under directory 'docs/_build'

warning: no previously-included files matching '*.pyc' found under directory 'tests'

Downloading/unpacking alembic==0.6.3 (from -r requests (line 8))

Downloading alembic-0.6.3.tar.gz (437Kb): 437Kb downloaded

Running setup.py egg_info for package alembic

warning: no files found matching '*.jpg' under directory 'docs'

warning: no files found matching '*.sty' under directory 'docs'

warning: no files found matching '*.dat' under directory 'tests'

warning: no files found matching 'distribute_setup.py'

no previously-included directories found matching 'docs/build/output'

Downloading/unpacking ipython==1.2.1 (from -r requests (line 9))

Downloading ipython-1.2.1.tar.gz (8.7Mb): 8.7Mb downloaded

Running setup.py egg_info for package ipython

Downloading/unpacking nose==1.3.0 (from -r requests (line 10))

Downloading nose-1.3.0.tar.gz (404Kb): 404Kb downloaded

Running setup.py egg_info for package nose

no previously-included directories found matching 'doc/.build'

Downloading/unpacking psycopg2==2.5.2 (from -r requests (line 11))

Downloading psycopg2-2.5.2.tar.gz (685Kb): 685Kb downloaded

Running 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'.

Command python setup.py egg_info failed with error code 1 in /home/duqi/python/homepage/build/psycopg2

Storing complete log in /home/duqi/.pip/pip.log