ngsxfem installing issues

I really want to know what the meaning if the INSTLOCATION in cmake ../ -DCMAKE_INSTALL_PREFIX=INSTLOCATION , how can I find what it is and where I install the ngsolve.
And when I type cmake ... -DCMAKE_INSTALL_PREFIX=/usr, the output always is :
CMake Error: The source directory "/home/kaipeng/ngx/ngsxfem/build/..." does not exist.
Specify --help for usage, or press the help button on the CMake GUI.

I am really need help. Thank you very much!!!!!!

but
Python 3.8.2 (default, Jul 16 2020, 14:00:26)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import xfem
>>> from xfem import *
>>>

~/ngx/ngsxfem/build$ make test
Running tests...
Test project /home/kaipeng/ngx/ngsxfem/build
Start 1: cpu_usage
1/25 Test #1: cpu_usage ........................ Passed 0.17 sec
Start 2: py_tutorial_nxfem_lo
2/25 Test #2: py_tutorial_nxfem_lo .............***Failed 0.39 sec
Start 3: py_tutorial_cutfem_lo
3/25 Test #3: py_tutorial_cutfem_lo ............***Failed 0.35 sec
Start 4: py_tutorial_nxfem_ho
4/25 Test #4: py_tutorial_nxfem_ho .............***Failed 0.34 sec
Start 5: py_tutorial_tracefem
5/25 Test #5: py_tutorial_tracefem .............***Failed 0.34 sec
Start 6: py_tutorial_stokesxfem
6/25 Test #6: py_tutorial_stokesxfem ...........***Failed 0.34 sec
Start 7: py_tutorial_fictdom
7/25 Test #7: py_tutorial_fictdom ..............***Failed 0.33 sec
Start 8: py_tutorial_fictdom_dg
8/25 Test #8: py_tutorial_fictdom_dg ...........***Failed 0.34 sec
Start 9: pytests_xfes_ndof
9/25 Test #9: pytests_xfes_ndof ................***Failed 0.02 sec
Start 10: pytests_apply
10/25 Test #10: pytests_apply ....................***Failed 0.02 sec
Start 11: pytests_calc_linearized
11/25 Test #11: pytests_calc_linearized ..........***Failed 0.02 sec
Start 12: pytests_cutint
12/25 Test #12: pytests_cutint ...................***Failed 0.02 sec
Start 13: pytests_straightcutrule
13/25 Test #13: pytests_straightcutrule ..........***Failed 0.02 sec
Start 14: pytests_backupcutrule
14/25 Test #14: pytests_backupcutrule ............***Failed 0.02 sec
Start 15: pytests_intcurved
15/25 Test #15: pytests_intcurved ................***Failed 0.02 sec
Start 16: pytests_nxfem
16/25 Test #16: pytests_nxfem ....................***Failed 0.02 sec
Start 17: pytests_shifteval
17/25 Test #17: pytests_shifteval ................***Failed 0.02 sec
Start 18: pytests_quadchallenges
18/25 Test #18: pytests_quadchallenges ...........***Failed 0.02 sec
Start 19: pytests_num_nxfem
19/25 Test #19: pytests_num_nxfem ................***Failed 0.02 sec
Start 20: pytests_spacetimecutrule
20/25 Test #20: pytests_spacetimecutrule .........***Failed 0.02 sec
Start 21: pytests_spacetime_vtk
21/25 Test #21: pytests_spacetime_vtk ............***Failed 0.02 sec
Start 22: pytests_navier_stokes
22/25 Test #22: pytests_navier_stokes ............***Failed 0.02 sec
Start 23: pytests_mlset_module
23/25 Test #23: pytests_mlset_module .............***Failed 0.02 sec
Start 24: pytests_mlset_integrate
24/25 Test #24: pytests_mlset_integrate ..........***Failed 0.02 sec
Start 25: pytests_mlset_pde
25/25 Test #25: pytests_mlset_pde ................***Failed 0.02 sec

4% tests passed, 24 tests failed out of 25

Total Test time (real) = 2.95 sec

The following tests FAILED:
2 - py_tutorial_nxfem_lo (Failed)
3 - py_tutorial_cutfem_lo (Failed)
4 - py_tutorial_nxfem_ho (Failed)
5 - py_tutorial_tracefem (Failed)
6 - py_tutorial_stokesxfem (Failed)
7 - py_tutorial_fictdom (Failed)
8 - py_tutorial_fictdom_dg (Failed)
9 - pytests_xfes_ndof (Failed)
10 - pytests_apply (Failed)
11 - pytests_calc_linearized (Failed)
12 - pytests_cutint (Failed)
13 - pytests_straightcutrule (Failed)
14 - pytests_backupcutrule (Failed)
15 - pytests_intcurved (Failed)
16 - pytests_nxfem (Failed)
17 - pytests_shifteval (Failed)
18 - pytests_quadchallenges (Failed)
19 - pytests_num_nxfem (Failed)
20 - pytests_spacetimecutrule (Failed)
21 - pytests_spacetime_vtk (Failed)
22 - pytests_navier_stokes (Failed)
23 - pytests_mlset_module (Failed)
24 - pytests_mlset_integrate (Failed)
25 - pytests_mlset_pde (Failed)
Errors while running CTest
make: *** [Makefile:107: test] Error 8

~/ngx/ngsxfem/build$ make test
Running tests...
Test project /home/kaipeng/ngx/ngsxfem/build
Start 1: cpu_usage
1/25 Test #1: cpu_usage ........................ Passed 0.17 sec
Start 2: py_tutorial_nxfem_lo
2/25 Test #2: py_tutorial_nxfem_lo .............***Failed 0.39 sec
Start 3: py_tutorial_cutfem_lo
3/25 Test #3: py_tutorial_cutfem_lo ............***Failed 0.35 sec
Start 4: py_tutorial_nxfem_ho
4/25 Test #4: py_tutorial_nxfem_ho .............***Failed 0.34 sec
Start 5: py_tutorial_tracefem
5/25 Test #5: py_tutorial_tracefem .............***Failed 0.34 sec
Start 6: py_tutorial_stokesxfem
6/25 Test #6: py_tutorial_stokesxfem ...........***Failed 0.34 sec
Start 7: py_tutorial_fictdom
7/25 Test #7: py_tutorial_fictdom ..............***Failed 0.33 sec
Start 8: py_tutorial_fictdom_dg
8/25 Test #8: py_tutorial_fictdom_dg ...........***Failed 0.34 sec
Start 9: pytests_xfes_ndof
9/25 Test #9: pytests_xfes_ndof ................***Failed 0.02 sec
Start 10: pytests_apply
10/25 Test #10: pytests_apply ....................***Failed 0.02 sec
Start 11: pytests_calc_linearized
11/25 Test #11: pytests_calc_linearized ..........***Failed 0.02 sec
Start 12: pytests_cutint
12/25 Test #12: pytests_cutint ...................***Failed 0.02 sec
Start 13: pytests_straightcutrule
13/25 Test #13: pytests_straightcutrule ..........***Failed 0.02 sec
Start 14: pytests_backupcutrule
14/25 Test #14: pytests_backupcutrule ............***Failed 0.02 sec
Start 15: pytests_intcurved
15/25 Test #15: pytests_intcurved ................***Failed 0.02 sec
Start 16: pytests_nxfem
16/25 Test #16: pytests_nxfem ....................***Failed 0.02 sec
Start 17: pytests_shifteval
17/25 Test #17: pytests_shifteval ................***Failed 0.02 sec
Start 18: pytests_quadchallenges
18/25 Test #18: pytests_quadchallenges ...........***Failed 0.02 sec
Start 19: pytests_num_nxfem
19/25 Test #19: pytests_num_nxfem ................***Failed 0.02 sec
Start 20: pytests_spacetimecutrule
20/25 Test #20: pytests_spacetimecutrule .........***Failed 0.02 sec
Start 21: pytests_spacetime_vtk
21/25 Test #21: pytests_spacetime_vtk ............***Failed 0.02 sec
Start 22: pytests_navier_stokes
22/25 Test #22: pytests_navier_stokes ............***Failed 0.02 sec
Start 23: pytests_mlset_module
23/25 Test #23: pytests_mlset_module .............***Failed 0.02 sec
Start 24: pytests_mlset_integrate
24/25 Test #24: pytests_mlset_integrate ..........***Failed 0.02 sec
Start 25: pytests_mlset_pde
25/25 Test #25: pytests_mlset_pde ................***Failed 0.02 sec

4% tests passed, 24 tests failed out of 25

Total Test time (real) = 2.95 sec

The following tests FAILED:
2 - py_tutorial_nxfem_lo (Failed)
3 - py_tutorial_cutfem_lo (Failed)
4 - py_tutorial_nxfem_ho (Failed)
5 - py_tutorial_tracefem (Failed)
6 - py_tutorial_stokesxfem (Failed)
7 - py_tutorial_fictdom (Failed)
8 - py_tutorial_fictdom_dg (Failed)
9 - pytests_xfes_ndof (Failed)
10 - pytests_apply (Failed)
11 - pytests_calc_linearized (Failed)
12 - pytests_cutint (Failed)
13 - pytests_straightcutrule (Failed)
14 - pytests_backupcutrule (Failed)
15 - pytests_intcurved (Failed)
16 - pytests_nxfem (Failed)
17 - pytests_shifteval (Failed)
18 - pytests_quadchallenges (Failed)
19 - pytests_num_nxfem (Failed)
20 - pytests_spacetimecutrule (Failed)
21 - pytests_spacetime_vtk (Failed)
22 - pytests_navier_stokes (Failed)
23 - pytests_mlset_module (Failed)
24 - pytests_mlset_integrate (Failed)
25 - pytests_mlset_pde (Failed)
Errors while running CTest
make: *** [Makefile:107: test] Error 8

~/ngx/ngsxfem/build$ make test
Running tests...
Test project /home/kaipeng/ngx/ngsxfem/build
Start 1: cpu_usage
1/25 Test #1: cpu_usage ........................ Passed 0.17 sec
Start 2: py_tutorial_nxfem_lo
2/25 Test #2: py_tutorial_nxfem_lo .............***Failed 0.39 sec
Start 3: py_tutorial_cutfem_lo
3/25 Test #3: py_tutorial_cutfem_lo ............***Failed 0.35 sec
Start 4: py_tutorial_nxfem_ho
4/25 Test #4: py_tutorial_nxfem_ho .............***Failed 0.34 sec
Start 5: py_tutorial_tracefem
5/25 Test #5: py_tutorial_tracefem .............***Failed 0.34 sec
Start 6: py_tutorial_stokesxfem
6/25 Test #6: py_tutorial_stokesxfem ...........***Failed 0.34 sec
Start 7: py_tutorial_fictdom
7/25 Test #7: py_tutorial_fictdom ..............***Failed 0.33 sec
Start 8: py_tutorial_fictdom_dg
8/25 Test #8: py_tutorial_fictdom_dg ...........***Failed 0.34 sec
Start 9: pytests_xfes_ndof
9/25 Test #9: pytests_xfes_ndof ................***Failed 0.02 sec
Start 10: pytests_apply
10/25 Test #10: pytests_apply ....................***Failed 0.02 sec
Start 11: pytests_calc_linearized
11/25 Test #11: pytests_calc_linearized ..........***Failed 0.02 sec
Start 12: pytests_cutint
12/25 Test #12: pytests_cutint ...................***Failed 0.02 sec
Start 13: pytests_straightcutrule
13/25 Test #13: pytests_straightcutrule ..........***Failed 0.02 sec
Start 14: pytests_backupcutrule
14/25 Test #14: pytests_backupcutrule ............***Failed 0.02 sec
Start 15: pytests_intcurved
15/25 Test #15: pytests_intcurved ................***Failed 0.02 sec
Start 16: pytests_nxfem
16/25 Test #16: pytests_nxfem ....................***Failed 0.02 sec
Start 17: pytests_shifteval
17/25 Test #17: pytests_shifteval ................***Failed 0.02 sec
Start 18: pytests_quadchallenges
18/25 Test #18: pytests_quadchallenges ...........***Failed 0.02 sec
Start 19: pytests_num_nxfem
19/25 Test #19: pytests_num_nxfem ................***Failed 0.02 sec
Start 20: pytests_spacetimecutrule
20/25 Test #20: pytests_spacetimecutrule .........***Failed 0.02 sec
Start 21: pytests_spacetime_vtk
21/25 Test #21: pytests_spacetime_vtk ............***Failed 0.02 sec
Start 22: pytests_navier_stokes
22/25 Test #22: pytests_navier_stokes ............***Failed 0.02 sec
Start 23: pytests_mlset_module
23/25 Test #23: pytests_mlset_module .............***Failed 0.02 sec
Start 24: pytests_mlset_integrate
24/25 Test #24: pytests_mlset_integrate ..........***Failed 0.02 sec
Start 25: pytests_mlset_pde
25/25 Test #25: pytests_mlset_pde ................***Failed 0.02 sec

4% tests passed, 24 tests failed out of 25

Total Test time (real) = 2.95 sec

The following tests FAILED:
2 - py_tutorial_nxfem_lo (Failed)
3 - py_tutorial_cutfem_lo (Failed)
4 - py_tutorial_nxfem_ho (Failed)
5 - py_tutorial_tracefem (Failed)
6 - py_tutorial_stokesxfem (Failed)
7 - py_tutorial_fictdom (Failed)
8 - py_tutorial_fictdom_dg (Failed)
9 - pytests_xfes_ndof (Failed)
10 - pytests_apply (Failed)
11 - pytests_calc_linearized (Failed)
12 - pytests_cutint (Failed)
13 - pytests_straightcutrule (Failed)
14 - pytests_backupcutrule (Failed)
15 - pytests_intcurved (Failed)
16 - pytests_nxfem (Failed)
17 - pytests_shifteval (Failed)
18 - pytests_quadchallenges (Failed)
19 - pytests_num_nxfem (Failed)
20 - pytests_spacetimecutrule (Failed)
21 - pytests_spacetime_vtk (Failed)
22 - pytests_navier_stokes (Failed)
23 - pytests_mlset_module (Failed)
24 - pytests_mlset_integrate (Failed)
25 - pytests_mlset_pde (Failed)
Errors while running CTest
make: *** [Makefile:107: test] Error 8

~/ngx/ngsxfem/build$ make test
Running tests...
Test project /home/kaipeng/ngx/ngsxfem/build
Start 1: cpu_usage
1/25 Test #1: cpu_usage ........................ Passed 0.17 sec
Start 2: py_tutorial_nxfem_lo
2/25 Test #2: py_tutorial_nxfem_lo .............***Failed 0.39 sec
Start 3: py_tutorial_cutfem_lo
3/25 Test #3: py_tutorial_cutfem_lo ............***Failed 0.35 sec
Start 4: py_tutorial_nxfem_ho
4/25 Test #4: py_tutorial_nxfem_ho .............***Failed 0.34 sec
Start 5: py_tutorial_tracefem
5/25 Test #5: py_tutorial_tracefem .............***Failed 0.34 sec
Start 6: py_tutorial_stokesxfem
6/25 Test #6: py_tutorial_stokesxfem ...........***Failed 0.34 sec
Start 7: py_tutorial_fictdom
7/25 Test #7: py_tutorial_fictdom ..............***Failed 0.33 sec
Start 8: py_tutorial_fictdom_dg
8/25 Test #8: py_tutorial_fictdom_dg ...........***Failed 0.34 sec
Start 9: pytests_xfes_ndof
9/25 Test #9: pytests_xfes_ndof ................***Failed 0.02 sec
Start 10: pytests_apply
10/25 Test #10: pytests_apply ....................***Failed 0.02 sec
Start 11: pytests_calc_linearized
11/25 Test #11: pytests_calc_linearized ..........***Failed 0.02 sec
Start 12: pytests_cutint
12/25 Test #12: pytests_cutint ...................***Failed 0.02 sec
Start 13: pytests_straightcutrule
13/25 Test #13: pytests_straightcutrule ..........***Failed 0.02 sec
Start 14: pytests_backupcutrule
14/25 Test #14: pytests_backupcutrule ............***Failed 0.02 sec
Start 15: pytests_intcurved
15/25 Test #15: pytests_intcurved ................***Failed 0.02 sec
Start 16: pytests_nxfem
16/25 Test #16: pytests_nxfem ....................***Failed 0.02 sec
Start 17: pytests_shifteval
17/25 Test #17: pytests_shifteval ................***Failed 0.02 sec
Start 18: pytests_quadchallenges
18/25 Test #18: pytests_quadchallenges ...........***Failed 0.02 sec
Start 19: pytests_num_nxfem
19/25 Test #19: pytests_num_nxfem ................***Failed 0.02 sec
Start 20: pytests_spacetimecutrule
20/25 Test #20: pytests_spacetimecutrule .........***Failed 0.02 sec
Start 21: pytests_spacetime_vtk
21/25 Test #21: pytests_spacetime_vtk ............***Failed 0.02 sec
Start 22: pytests_navier_stokes
22/25 Test #22: pytests_navier_stokes ............***Failed 0.02 sec
Start 23: pytests_mlset_module
23/25 Test #23: pytests_mlset_module .............***Failed 0.02 sec
Start 24: pytests_mlset_integrate
24/25 Test #24: pytests_mlset_integrate ..........***Failed 0.02 sec
Start 25: pytests_mlset_pde
25/25 Test #25: pytests_mlset_pde ................***Failed 0.02 sec

4% tests passed, 24 tests failed out of 25

Total Test time (real) = 2.95 sec

The following tests FAILED:
2 - py_tutorial_nxfem_lo (Failed)
3 - py_tutorial_cutfem_lo (Failed)
4 - py_tutorial_nxfem_ho (Failed)
5 - py_tutorial_tracefem (Failed)
6 - py_tutorial_stokesxfem (Failed)
7 - py_tutorial_fictdom (Failed)
8 - py_tutorial_fictdom_dg (Failed)
9 - pytests_xfes_ndof (Failed)
10 - pytests_apply (Failed)
11 - pytests_calc_linearized (Failed)
12 - pytests_cutint (Failed)
13 - pytests_straightcutrule (Failed)
14 - pytests_backupcutrule (Failed)
15 - pytests_intcurved (Failed)
16 - pytests_nxfem (Failed)
17 - pytests_shifteval (Failed)
18 - pytests_quadchallenges (Failed)
19 - pytests_num_nxfem (Failed)
20 - pytests_spacetimecutrule (Failed)
21 - pytests_spacetime_vtk (Failed)
22 - pytests_navier_stokes (Failed)
23 - pytests_mlset_module (Failed)
24 - pytests_mlset_integrate (Failed)
25 - pytests_mlset_pde (Failed)
Errors while running CTest
make: *** [Makefile:107: test] Error 8