使用yum install 包時出現的undefined symbol問題：

yum install libatomic1 -y There was a problem importing one of the Python modules required to run yum. The error leading to this problem was:/usr/lib64/python2.7/site-packages/pycurl.so: undefined symbol: CRYPTO_num_locksPlease install a package which provides this module, or verify that the module is installed correctly.It's possible that the above module doesn't match the current version of Python, which is: 2.7.5 (default, Aug 4 2017, 00:39:18) [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)]If you cannot solve this problem yourself, please go to the yum faq at:http://yum.baseurl.org/wiki/Faq

看靜態鏈接庫的情況：

# ldd /usr/lib64/python2.7/site-packages/pycurl.so linux-vdso.so.1 => (0x00007ffd487c1000)libcurl.so.4 => /usr/local/lib/libcurl.so.4 (0x00007f89c19e1000)(此處的問題)libpython2.7.so.1.0 => /lib64/libpython2.7.so.1.0 (0x00007f89c1615000)libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f89c13f9000)libc.so.6 => /lib64/libc.so.6 (0x00007f89c102c000)libz.so.1 => /lib64/libz.so.1 (0x00007f89c0e16000)libdl.so.2 => /lib64/libdl.so.2 (0x00007f89c0c12000)libutil.so.1 => /lib64/libutil.so.1 (0x00007f89c0a0f000)libm.so.6 => /lib64/libm.so.6 (0x00007f89c070d000)/lib64/ld-linux-x86-64.so.2 (0x00007f89c1e44000)

libcurl.so.4在哪里：

locate libcurl.so.4 /opt/soft/curl-7.46.0/lib/.libs/libcurl.so.4 /opt/soft/curl-7.46.0/lib/.libs/libcurl.so.4.4.0 /usr/lib64/libcurl.so.4 /usr/lib64/libcurl.so.4.3.0 /usr/local/lib/libcurl.so.4 /usr/local/lib/libcurl.so.4.4.0# 刪掉有問題的lib庫 rm /usr/local/lib/libcurl.so.4# 重新link ln -s /usr/lib64/libcurl.so.4.3.0 /usr/lib/libcurl.so.4

總結

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