Backwards compatibility with curl < 7.41, fixes JosephP91#32.

CMakeLists.txt

@@ -5,8 +5,13 @@ IF(BIICODE)
     ADD_BIICODE_TARGETS()
 ELSE()
     cmake_minimum_required(VERSION 2.8)
-    set(CURL_MIN_VERSION "7.28.0")
-
+    #if using an older VERSION of curl ocsp stapling can be disabled
+    if(WITHOUT_OCSP_STAPLING)
+        set(CURL_MIN_VERSION "7.28.0")
+        add_definitions(-DWITHOUT_OCSP_STAPLING)
+    else()
+        set(CURL_MIN_VERSION "7.41.0")
+    endif()
     # Setting up project
     project(CURLCPP)
 

README.md

@@ -17,6 +17,12 @@ cmake ..
 make # -j2
 ```
 
+**Note:** cURL 7.28 is required, but if you are using cURL < 7.41 you have to replace the cmake command with this one:
+
+```bash
+cmake .. -WITHOUT_OCSP_STAPLING=1
+```
+
 Then add `<curlcpp root>/build/src/` to your library path and `<curlcpp root>/include/` to your include path.
 
 When linking, link against `curlcpp` (e.g.: g++ -std=c++11 example.cpp -o example -lcurlcpp -lcurl).

include/curl_easy.h

@@ -839,9 +839,10 @@ namespace curl  {
 
         /* Path to Unix domain socket */
         CURLCPP_DEFINE_OPTION(CURLOPT_UNIX_SOCKET_PATH, const char*);
-
+#if !defined(WITHOUT_OCSP_STAPLING)
         /* Set if we should verify the certificate status. */
         CURLCPP_DEFINE_OPTION(CURLOPT_SSL_VERIFYSTATUS, long);
+#endif
     }  // of namespace detail
 
     /**