diff -ur root-6.18.00.orig/cmake/modules/SearchInstalledSoftware.cmake root-6.18.00/cmake/modules/SearchInstalledSoftware.cmake
--- root-6.18.00.orig/cmake/modules/SearchInstalledSoftware.cmake	2019-06-25 10:52:11.000000000 +0200
+++ root-6.18.00/cmake/modules/SearchInstalledSoftware.cmake	2019-06-26 16:00:21.275634375 +0200
@@ -1380,80 +1380,18 @@
 
 #---Download googletest--------------------------------------------------------------
 if (testing)
-  # FIXME: Remove our version of gtest in roottest. We can reuse this one.
-  # Add googletest
-  # http://stackoverflow.com/questions/9689183/cmake-googletest
+ # Workaround for missing libraries in Fedora's gmock packaging < 1.8.0
+ if(EXISTS ${CMAKE_SOURCE_DIR}/googlemock)
+  set(_G_LIBRARY_PATH ${CMAKE_SOURCE_DIR}/googlemock)
 
-  set(_gtest_byproduct_binary_dir
-    ${CMAKE_CURRENT_BINARY_DIR}/googletest-prefix/src/googletest-build/googlemock/)
-  set(_gtest_byproducts
-    ${_gtest_byproduct_binary_dir}/gtest/libgtest.a
-    ${_gtest_byproduct_binary_dir}/gtest/libgtest_main.a
-    ${_gtest_byproduct_binary_dir}/libgmock.a
-    ${_gtest_byproduct_binary_dir}/libgmock_main.a
-    )
-
-  if(MSVC)
-    set(EXTRA_GTEST_OPTS
-      -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG:PATH=\\\"\\\"
-      -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE:PATH=\\\"\\\")
-  endif()
-  if(APPLE)
-    set(EXTRA_GTEST_OPTS
-      -DCMAKE_OSX_SYSROOT=${CMAKE_OSX_SYSROOT})
-  endif()
-
-  ExternalProject_Add(
-    googletest
-    GIT_REPOSITORY https://github.com/google/googletest.git
-    GIT_TAG release-1.8.0
-    UPDATE_COMMAND ""
-    # TIMEOUT 10
-    # # Force separate output paths for debug and release builds to allow easy
-    # # identification of correct lib in subsequent TARGET_LINK_LIBRARIES commands
-    # CMAKE_ARGS -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG:PATH=DebugLibs
-    #            -DCMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE:PATH=ReleaseLibs
-    #            -Dgtest_force_shared_crt=ON
-    CMAKE_ARGS -G ${CMAKE_GENERATOR}
-                  -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-                  -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-                  -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
-                  -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
-                  -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
-                  -DCMAKE_AR=${CMAKE_AR}
-                  -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
-                  ${EXTRA_GTEST_OPTS}
-    # Disable install step
-    INSTALL_COMMAND ""
-    BUILD_BYPRODUCTS ${_gtest_byproducts}
-    # Wrap download, configure and build steps in a script to log output
-    LOG_DOWNLOAD ON
-    LOG_CONFIGURE ON
-    LOG_BUILD ON)
-
-  # Specify include dirs for gtest and gmock
-  ExternalProject_Get_Property(googletest source_dir)
-  set(GTEST_INCLUDE_DIR ${source_dir}/googletest/include)
-  set(GMOCK_INCLUDE_DIR ${source_dir}/googlemock/include)
-
-  # Libraries
-  ExternalProject_Get_Property(googletest binary_dir)
-  set(_G_LIBRARY_PATH ${binary_dir}/googlemock/)
-
-  # Register gtest, gtest_main, gmock, gmock_main
-  foreach (lib gtest gtest_main gmock gmock_main)
+  # Register gmock, gmock_main
+  foreach (lib gmock gmock_main)
     add_library(${lib} IMPORTED STATIC GLOBAL)
-    add_dependencies(${lib} googletest)
-    if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" AND
-        ${CMAKE_CXX_COMPILER_VERSION} VERSION_GREATER_EQUAL 9)
-      target_compile_options(${lib} INTERFACE -Wno-deprecated-copy)
-    endif()
   endforeach()
-  set_property(TARGET gtest PROPERTY IMPORTED_LOCATION ${_G_LIBRARY_PATH}/gtest/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX})
-  set_property(TARGET gtest_main PROPERTY IMPORTED_LOCATION ${_G_LIBRARY_PATH}/gtest/${CMAKE_STATIC_LIBRARY_PREFIX}gtest_main${CMAKE_STATIC_LIBRARY_SUFFIX})
   set_property(TARGET gmock PROPERTY IMPORTED_LOCATION ${_G_LIBRARY_PATH}/${CMAKE_STATIC_LIBRARY_PREFIX}gmock${CMAKE_STATIC_LIBRARY_SUFFIX})
   set_property(TARGET gmock_main PROPERTY IMPORTED_LOCATION ${_G_LIBRARY_PATH}/${CMAKE_STATIC_LIBRARY_PREFIX}gmock_main${CMAKE_STATIC_LIBRARY_SUFFIX})
 
+ endif()
 endif()
 
 #------------------------------------------------------------------------------------