Linker error while building a ROOT class "RooUnfold" in Mac using cmake

What I want to do
I want to build a ROOT class "RooUnfold" in Mac.

Question
How can I solve linker errors (ld: library not found for -lgcov clang: error: linker command failed with exit code 1 (use -v to see invocation)) which occurs when I tried to build RooUnfold using cmake?

What I did
(1) I installed ROOT on my Mac. It successfully works.
(2) I downloaded and unzipped "RooUnfold-master.zip" from a web cite(https://gitlab.cern.ch/RooUnfold/RooUnfold).
(3) I tried to build RooUnfold following the instructions on the web cite as following :

cd RooUnfold-mastermkdir buildcd buildcmake ..make -j4cd ..source build/setup.sh

(4) However, it was failed when I tried make -j4 with following output :

$ cd RooUnfold-master $ mkdir build$ cd build $ cmake ..CMake Deprecation Warning at CMakeLists.txt:10 (cmake_minimum_required):  Compatibility with CMake < 2.8.12 will be removed from a future version of  CMake.  Update the VERSION argument <min> value or use a ...<max> suffix to tell  CMake that the project does not need compatibility with older versions.Setup using plain ROOTDoxygen build started-- Configuring done-- Generating done-- Build files have been written to: /Users/XXXXXX/RooUnfold-master/build$ make -j4[  2%] Generating G__RooUnfold.cxx, libRooUnfold_rdict.pcm, libRooUnfold.rootmapScanning dependencies of target RooUnfold[  9%] Building CXX object CMakeFiles/RooUnfold.dir/src/RooUnfoldBayes.o[  9%] Building CXX object CMakeFiles/RooUnfold.dir/src/RooUnfold.o[  9%] Building CXX object CMakeFiles/RooUnfold.dir/src/RooFitUnfold.o[ 12%] Building CXX object CMakeFiles/RooUnfold.dir/src/RooUnfoldBinByBin.oIn file included from /Users/XXXXXX/RooUnfold-master/src/RooUnfoldBinByBin.cxx:8:/Users/XXXXXX/RooUnfold-master/src/RooUnfoldBinByBin.h:44:3: warning: 'CheckTObjectHashConsistency' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]  ClassDefT (RooUnfoldBinByBinT, 1)  // Bin-by-bin unfolding  ^/opt/homebrew/Cellar/root/6.26.04_1/include/root/Rtypes.h:392:4: note: expanded from macro 'ClassDefT'   _ClassDefOutline_(name,id,virtual,)              \   ^/opt/homebrew/Cellar/root/6.26.04_1/include/root/Rtypes.h:300:4: note: expanded from macro '_ClassDefOutline_'   _ClassDefBase_(name,id, virtual_keyword, overrd)       \   ^(a lot of "override" errors)97 warnings generated.[ 63%] Linking CXX shared library libRooUnfold.dylib[ 63%] Built target RooUnfold[ 73%] Building CXX object CMakeFiles/RooUnfoldTest3D.dir/test/src/RooUnfoldTest3D.o[ 73%] Building CXX object test/CMakeFiles/RooUnfoldTests.dir/src/generate_test.o[ 73%] Building CXX object CMakeFiles/RooUnfoldTest2D.dir/test/src/RooUnfoldTest2D.o[ 73%] Building CXX object CMakeFiles/RooUnfoldTest.dir/test/src/RooUnfoldTest.o[ 75%] Building CXX object test/CMakeFiles/RooUnfoldTests.dir/src/response_test.o[ 78%] Linking CXX executable RooUnfoldTestld: library not found for -lgcovclang: error: linker command failed with exit code 1 (use -v to see invocation)make[2]: *** [RooUnfoldTest] Error 1make[1]: *** [CMakeFiles/RooUnfoldTest.dir/all] Error 2make[1]: *** Waiting for unfinished jobs....[ 80%] Building CXX object test/CMakeFiles/RooUnfoldTests.dir/src/bayes_test.o[ 82%] Linking CXX executable RooUnfoldTest2Dld: library not found for -lgcovclang: error: linker command failed with exit code 1 (use -v to see invocation)make[2]: *** [RooUnfoldTest2D] Error 1make[1]: *** [CMakeFiles/RooUnfoldTest2D.dir/all] Error 2[ 85%] Linking CXX executable RooUnfoldTest3D[ 87%] Building CXX object test/CMakeFiles/RooUnfoldTests.dir/src/RooUnfold_unit_tests.old: library not found for -lgcovclang: error: linker command failed with exit code 1 (use -v to see invocation)make[2]: *** [RooUnfoldTest3D] Error 1make[1]: *** [CMakeFiles/RooUnfoldTest3D.dir/all] Error 2In file included from /Users/XXXXXX/RooUnfold-master/test/src/bayes_test.cxx:13:/Users/XXXXXX/RooUnfold-master/src/RooUnfoldBayes.h:45:17: warning: 'SetRegParm' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]  virtual void  SetRegParm (Double_t parm);                ^/Users/XXXXXX/RooUnfold-master/test/src/bayes_test.cxx:31:20: note: in instantiation of template class 'RooUnfoldBayesT<TH1, TH2>' requested here    RooUnfoldBayes unfold(&response, h_meas, 4);                   ^/Users/XXXXXX/RooUnfold-master/src/RooUnfold.h:115:22: note: overridden virtual function is here  virtual void       SetRegParm (Double_t parm);                     ^In file included from /Users/XXXXXX/RooUnfold-master/test/src/bayes_test.cxx:13:/Users/XXXXXX/RooUnfold-master/src/RooUnfoldBayes.h:46:18: warning: 'GetRegParm' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]  virtual double GetRegParm() const;                 ^/Users/XXXXXX/RooUnfold-master/src/RooUnfold.h:116:22: note: overridden virtual function is here  virtual Double_t   GetRegParm() const; // Get Regularisation Parameter                     ^In file included from /Users/XXXXXX/RooUnfold-master/test/src/bayes_test.cxx:13:/Users/XXXXXX/RooUnfold-master/src/RooUnfoldBayes.h:47:16: warning: 'Reset' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]  virtual void Reset();               ^/Users/XXXXXX/RooUnfold-master/src/RooUnfold.h:74:16: note: overridden virtual function is here  virtual void Reset ();               ^In file included from /Users/XXXXXX/RooUnfold-master/test/src/bayes_test.cxx:13:/Users/XXXXXX/RooUnfold-master/src/RooUnfoldBayes.h:48:16: warning: 'Print' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]  virtual void Print (Option_t* option= "") const;               ^/Users/XXXXXX/RooUnfold-master/src/RooUnfold.h:129:8: note: overridden virtual function is here  void Print(Option_t* opt="") const;       ^/Users/XXXXXX/RooUnfold-master/test/src/RooUnfold_unit_tests.cxx:29:62: warning: format specifies type 'unsigned int' but the argument has type 'std::vector<float>::size_type' (aka 'unsigned long') [-Wformat]    check(n==r.size(), "error in bayes: %d bins is not %u",n,r.size());                                                       ~~    ^~~~~~~~                                                       %lu/Users/XXXXXX/RooUnfold-master/test/src/dbg.h:30:18: note: expanded from macro 'check'    log_err(M, ##__VA_ARGS__); errno=0; goto error; }            ~    ^~~~~~~~~~~/Users/XXXXXX/RooUnfold-master/test/src/dbg.h:20:26: note: expanded from macro 'log_err'        clean_errno(), ##__VA_ARGS__)                         ^~~~~~~~~~~4 warnings generated.1 warning generated.[ 90%] Linking CXX static library libRooUnfoldTests.a[ 90%] Built target RooUnfoldTestsmake: *** [all] Error 2

(5) I think the linker errors such as ld: library not found for -lgcov clang: error: linker command failed with exit code 1 (use -v to see invocation) are fatal, but I could not solve them.

Environment

• Mac OS : Monterey ver. 12.3
• chip : Apple M1 Pro
• ROOT : ver. 6.26

$ root --versionROOT Version: 6.26/04Built for macosxarm64 on Jun 07 2022, 16:01:16From tags/v6-26-04@v6-26-04

• gcc : ver. 13.1.6

$ gcc --versionApple clang version 13.1.6 (clang-1316.0.21.2)Target: arm64-apple-darwin21.4.0Thread model: posixInstalledDir: /Library/Developer/CommandLineTools/usr/bin

• cmake : ver. 3.22.3

$ cmake --versioncmake version 3.22.3CMake suite maintained and supported by Kitware (kitware.com/cmake).