---
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
-@@ -461,6 +461,10 @@ if(CMAKE_USE_OPENSSL)
+@@ -454,6 +454,14 @@ if(CMAKE_USE_OPENSSL)
set(USE_OPENSSL ON)
set(HAVE_LIBCRYPTO ON)
set(HAVE_LIBSSL ON)
+ check_library_exists("rt" clock_gettime "" HAVE_LIBRT)
+ if(HAVE_LIBRT)
+ list(APPEND OPENSSL_LIBRARIES rt)
++ endif()
++ check_library_exists("pthread" pthread_once "" HAVE_PTHREAD)
++ if(HAVE_PTHREAD)
++ list(APPEND OPENSSL_LIBRARIES pthread)
+ endif()
list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
include_directories(${OPENSSL_INCLUDE_DIR})
- set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
+