Add support for XEP-0100 jabber:iq:gateway

CMakeLists.txt

@@ -131,6 +131,12 @@ elseif(NOT WITHOUT_POSTGRESQL)
   find_package(PQ)
 endif()
 
+if(WITH_CURL)
+  find_package(CURL REQUIRED)
+elseif(NOT WITHOUT_CURL)
+  find_package(CURL)
+endif()
+
 #
 ## Set all the include directories, depending on what libraries are used
 #
@@ -146,6 +152,9 @@ endif()
 if(UDNS_FOUND)
   include_directories(${UDNS_INCLUDE_DIRS})
 endif()
+if(CURL_FOUND)
+  include_directories(${CURL_INCLUDE_DIRS})
+endif()
 
 # To be able to include the config.h and other files generated by cmake
 include_directories("${CMAKE_CURRENT_BINARY_DIR}/src/")
@@ -270,6 +279,10 @@ if(UDNS_FOUND)
   target_link_libraries(${PROJECT_NAME} ${UDNS_LIBRARIES})
   target_link_libraries(test_suite ${UDNS_LIBRARIES})
 endif()
+if(CURL_FOUND)
+  target_link_libraries(${PROJECT_NAME} ${CURL_LIBRARIES})
+  target_link_libraries(test_suite ${CURL_LIBRARIES})
+endif()
 if(LIBIDN_FOUND)
   target_link_libraries(${PROJECT_NAME} ${LIBIDN_LIBRARIES})
   target_link_libraries(test_suite ${LIBIDN_LIBRARIES})