Fix unit tests compilation with newer CMake

Author: sedmicha

CMakeModules/unit_tests.cmake

@@ -25,33 +25,33 @@ ExternalProject_Get_Property(googletest binary_dir)
 set(GTEST_LIBRARY_PATH ${binary_dir}/googlemock/gtest/${CMAKE_FIND_LIBRARY_PREFIXES}gtest.a)
 set(GTEST_LIBRARY gtest)
 add_library(${GTEST_LIBRARY} UNKNOWN IMPORTED)
-set_target_properties(${GTEST_LIBRARY} PROPERTIES
-  IMPORTED_LOCATION ${GTEST_LIBRARY_PATH}
-  IMPORTED_LINK_INTERFACE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+set_target_properties("${GTEST_LIBRARY}" PROPERTIES
+  IMPORTED_LOCATION "${GTEST_LIBRARY_PATH}"
+  IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
 add_dependencies(${GTEST_LIBRARY} googletest)
 
 set(GTEST_MAIN_LIBRARY_PATH ${binary_dir}/googlemock/gtest/${CMAKE_FIND_LIBRARY_PREFIXES}gtest_main.a)
 set(GTEST_MAIN_LIBRARY gtest_main)
 add_library(${GTEST_MAIN_LIBRARY} UNKNOWN IMPORTED)
-set_target_properties(${GTEST_MAIN_LIBRARY} PROPERTIES
-  IMPORTED_LOCATION ${GTEST_MAIN_LIBRARY_PATH}
-  IMPORTED_LINK_INTERFACE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+set_target_properties("${GTEST_MAIN_LIBRARY}" PROPERTIES
+  IMPORTED_LOCATION "${GTEST_MAIN_LIBRARY_PATH}"
+  IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
 add_dependencies(${GTEST_MAIN_LIBRARY} googletest)
 
 set(GMOCK_LIBRARY_PATH ${binary_dir}/googlemock/${CMAKE_FIND_LIBRARY_PREFIXES}gmock.a)
 set(GMOCK_LIBRARY gmock)
 add_library(${GMOCK_LIBRARY} UNKNOWN IMPORTED)
-set_target_properties(${GMOCK_LIBRARY} PROPERTIES
-  IMPORTED_LOCATION ${GMOCK_LIBRARY_PATH}
-  IMPORTED_LINK_INTERFACE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+set_target_properties("${GMOCK_LIBRARY}" PROPERTIES
+  IMPORTED_LOCATION "${GMOCK_LIBRARY_PATH}"
+  IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
 add_dependencies(${GMOCK_LIBRARY} googletest)
 
 set(GMOCK_MAIN_LIBRARY_PATH ${binary_dir}/googlemock/${CMAKE_FIND_LIBRARY_PREFIXES}gmock_main.a)
 set(GMOCK_MAIN_LIBRARY gmock_main)
 add_library(${GMOCK_MAIN_LIBRARY} UNKNOWN IMPORTED)
-set_target_properties(${GMOCK_MAIN_LIBRARY} PROPERTIES
-  IMPORTED_LOCATION ${GMOCK_MAIN_LIBRARY_PATH}
-  IMPORTED_LINK_INTERFACE_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+set_target_properties("${GMOCK_MAIN_LIBRARY}" PROPERTIES
+  IMPORTED_LOCATION "${GMOCK_MAIN_LIBRARY_PATH}"
+  IMPORTED_LINK_INTERFACE_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
 add_dependencies(${GMOCK_MAIN_LIBRARY} ${GTEST_LIBRARY})
 
 include_directories(