离线安装,./configure出现问题
```bash
checking for libxml-2.0 >= 2.7.6... no
configure: error: Package requirements (libxml-2.0 >= 2.7.6) were not met:
No package 'libxml-2.0' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively, you may set the environment variables LIBXML_CFLAGS
and LIBXML_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
```