Could NOT find CURL (missing: CURL_LIBRARY CURL_INCLUDE_DIR) on CMake
<p>I'm trying to use api.ai C++ library on Windows 7.
(<a href="https://github.com/api-ai/libapiai" rel="noreferrer">https://github.com/api-ai/libapiai</a>)
But i can not configuring that files..</p>

<p>I installed CMake and MinGW.</p>

<p>in build directory 
-> cmake .. -G "MinGW Makefiles" 
-> Error !!</p>

<p>===>>> error is below &lt;&lt;&lt;</p>

<pre><code>CMake Error at C:/Program Files (x86)/CMake/share/cmake-3.4/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
  Could NOT find CURL (missing: CURL_LIBRARY CURL_INCLUDE_DIR)
Call Stack (most recent call first):
  C:/Program Files (x86)/CMake/share/cmake-3.4/Modules/FindPackageHandleStandardArgs.cmake:388 (_FPHSA_FAILURE_MESSAGE)
  C:/Program Files (x86)/CMake/share/cmake-3.4/Modules/FindCURL.cmake:61 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:45 (find_package)
</code></pre>

<p>I don't know how can I solve.
what is curl_library? 
I can use that on Windows 7? not linux/unix etc..</p>