Merge branch 'cherry-pick-dbadaeee' into 'master'

Merge branch '677-linking-issues-on-macos' into 'OPAL-2021.1'

See merge request !538

CMakeLists.txt

@@ -144,7 +144,9 @@ if (USE_STATIC_LIBRARIES)
 endif ()
 set (HDF5_PREFER_PARALLEL ON)
 find_package (HDF5 REQUIRED)
-set (HDF5_LIBRARIES ${HDF5_LIBRARIES} ${CMAKE_DL_LIBS} rt z)
+if(UNIX AND NOT APPLE)
+    set (HDF5_LIBRARIES ${HDF5_LIBRARIES} ${CMAKE_DL_LIBS} rt z)
+endif ()
 message (STATUS "Found HDF5 libraries: ${HDF5_LIBRARIES}")
 
 find_package (GSL REQUIRED)
@@ -158,7 +160,9 @@ set (Boost_USE_MULTITHREADED OFF)
 set (Boost_USE_STATIC_RUNTIME OFF)
 find_package (Boost 1.66.0
     REQUIRED COMPONENTS filesystem iostreams regex serialization system timer chrono)
-set (Boost_LIBRARIES ${Boost_LIBRARIES} rt)
+if(UNIX AND NOT APPLE)
+    set (Boost_LIBRARIES ${Boost_LIBRARIES} rt)
+endif ()
 message (STATUS "Found Boost include dirs: ${Boost_INCLUDE_DIRS}")
 message (STATUS "Found Boost library dirs: ${Boost_LIBRARY_DIRS}")
 message (STATUS "Found Boost libraries: ${Boost_LIBRARIES}")