我正在尝试在Ubuntu10.04LTS上构建并安装M2Crypto。我下载并解压了M2Crypto-0.20.2.tar，并从M2Crypto-0.20.2目录中尝试了 python setup.py build 。我得到了一个错误，因为我没有swig。所以我运行了 sudo apt-get install swig 。然后我再次尝试 python setup.py build ，得到了：

/usr/lib/python2.6/distutils/dist.py:266: UserWarning: Unknown distribution option: 'test_suite'
  warnings.warn(msg)
running build
running build_py
running build_ext
building 'M2Crypto.__m2crypto' extension
swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
SWIG/_bio.i:64: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_rand.i:19: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_evp.i:156: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_dh.i:36: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_rsa.i:43: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_dsa.i:31: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_ssl.i:207: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_x509.i:313: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_pkcs7.i:42: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_pkcs7.i:42: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_util.i:9: Warning(454): Setting a pointer/reference variable may leak memory.
SWIG/_ec.i:111: Warning(454): Setting a pointer/reference variable may leak memory.