Merge pull request oneapi-src#1343 from igchor/add_pthread_umf

[UR] Add missing Threads library to common

Author: kbenzie

source/common/CMakeLists.txt

@@ -47,3 +47,10 @@ target_link_libraries(ur_common PUBLIC
     ${CMAKE_DL_LIBS}
     ${PROJECT_NAME}::headers
 )
+
+if (UNIX)
+    set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
+    set(THREADS_PREFER_PTHREAD_FLAG TRUE)
+    find_package(Threads REQUIRED)
+    target_link_libraries(ur_common PUBLIC Threads::Threads)
+endif()