The software is not installed in the default directory of the solution

1.Modify the PATH environment variable to be able to identify the binary file path for this program:

   modified /etc/profile
  In the /etc/profile.d/ directory, create a file with names ending in .sh suffix, which write the  "export PATH=$PATH:/path/to/somewhere"

2.the system searches the library file path

  by default, the system searches the library file path is /lib,/usr/lib; to add additional search path
  Create a file named ending in .conf suffix in the /etc/ld.so.conf.d/ , and then write the path you want to add.
  # ldconfig  :research library file notification system
            -v: shows the process of re searching the library

3 header file: output to the system

  Default: /usr/include
  Add header file search path, use the link to
  /usr/local/tengine/include/  /usr/include/
   Both method:
          ln -s /usr/local/tengine/include/* /usr/include/ or
          ln -s /usr/local/tengine/include   /usr/include/tengine

4.man file path: install the man directory under the --prefix specified directory; /usr/share/man

  1)man -M /PATH/TO/MAN_DIR COMMAND 
  2)adding a MANPATH to /etc/man.config