[GitHub] hrsakai opened a new pull request #1957: Update pulsar cpp client docs

[GitBox <gi...@apache.org>]

hrsakai opened a new pull request #1957: Update pulsar cpp client docs
URL: https://github.com/apache/incubator-pulsar/pull/1957
 
 
   ### Motivation
   
   `cmake` command failed with below error on ubuntu-16.04.
   ```
   $ cd pulsar-client-cpp
   $ cmake .
   CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
   Please set them or make sure they are set and tested correctly in the CMake files:
   GMOCK_INCLUDE_PATH
      used as include directory in directory /root/incubator-pulsar/pulsar-client-cpp
      used as include directory in directory /root/incubator-pulsar/pulsar-client-cpp
   ・
   ・
   GMOCK_LIBRARY_PATH
       linked by target "main" in directory /root/incubator-pulsar/pulsar-client-cpp/tests
   
   -- Configuring incomplete, errors occurred!
   See also "/root/incubator-pulsar/pulsar-client-cpp/CMakeFiles/CMakeOutput.log".
   See also "/root/incubator-pulsar/pulsar-client-cpp/CMakeFiles/CMakeError.log”. 
   ```
   
   Also, we have to complie codes under `/usr/src/googletest`, not `/usr/src/gmock` and `/usr/src/gtest` on ubuntu-18.04(installed libgtest-dev-1.18.0)
   ```
   $ cd /usr/src/gmock/
   $ cmake .
   CMake Error at /usr/src/googletest/CMakeLists.txt:13 (add_subdirectory):
     add_subdirectory not given a binary directory but the given source
     directory "/usr/src/gmock" is not a subdirectory of "/usr/src/googletest".
     When specifying an out-of-tree source a binary directory must be explicitly
     specified.
   
   
   CMake Error at CMakeLists.txt:56 (config_compiler_and_linker):
     Unknown CMake command "config_compiler_and_linker".
   
   
   -- Configuring incomplete, errors occurred!
   See also "/usr/src/gmock/CMakeFiles/CMakeOutput.log".
   ```

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