The relevant part of the log seems to be in the detection of gmock/gtest:
_______________________________________________________________________ CMake Error at /usr/src/googletest/googletest/cmake/internal_utils.cmake:149 (add_library): add_library cannot create target "gmock" because another target with the same name already exists. The existing target is a static library created in source directory "/usr/src/googletest/googlemock". See documentation for policy CMP0002 for more details. Call Stack (most recent call first): /usr/src/googletest/googletest/cmake/internal_utils.cmake:172 (cxx_library_with_type) /usr/src/gmock/CMakeLists.txt:84 (cxx_library)
CMake Error at /usr/src/googletest/googletest/cmake/internal_utils.cmake:149 (add_library): add_library cannot create target "gmock_main" because another target with the same name already exists. The existing target is a static library created in source directory "/usr/src/googletest/googlemock". See documentation for policy CMP0002 for more details. Call Stack (most recent call first): /usr/src/googletest/googletest/cmake/internal_utils.cmake:172 (cxx_library_with_type) /usr/src/gmock/CMakeLists.txt:89 (cxx_library)
CMake Error at /usr/src/gmock/CMakeLists.txt:106 (install): install TARGETS given target "gmock" which does not exist in this directory. _______________________________________________________________________
Anyone has an idea how to fix this?