我试图安装pycurl通过:

sudo pip install pycurl

它下载得很好，但是当它运行setup.py时，我得到了以下回溯:

Downloading/unpacking pycurl
  Running setup.py egg_info for package pycurl
    Traceback (most recent call last):
      File "<string>", line 16, in <module>
      File "/tmp/pip-build-root/pycurl/setup.py", line 563, in <module>
        ext = get_extension()
      File "/tmp/pip-build-root/pycurl/setup.py", line 368, in get_extension
        ext_config = ExtensionConfiguration()
      File "/tmp/pip-build-root/pycurl/setup.py", line 65, in __init__
        self.configure()
      File "/tmp/pip-build-root/pycurl/setup.py", line 100, in configure_unix
        raise ConfigurationError(msg)
    __main__.ConfigurationError: Could not run curl-config: [Errno 2] No such file or directory
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/tmp/pip-build-root/pycurl/setup.py", line 563, in <module>

    ext = get_extension()

  File "/tmp/pip-build-root/pycurl/setup.py", line 368, in get_extension

    ext_config = ExtensionConfiguration()

  File "/tmp/pip-build-root/pycurl/setup.py", line 65, in __init__

    self.configure()

  File "/tmp/pip-build-root/pycurl/setup.py", line 100, in configure_unix

    raise ConfigurationError(msg)

__main__.ConfigurationError: Could not run curl-config: [Errno 2] No such file or directory

你知道为什么会发生这种事，以及如何解决吗