How to deactivate

[jiapei100]

Checklist

• [X] I have searched for similar issues.
• [X] For Python issues, I have tested with the latest development wheel.
• [X] I have checked the release documentation and the latest documentation (for master branch).

My Question

I tried the method , namely, add -Wno-unused-variable in my CMAKE_CXX_FLAGS, however, I still obtained ERRORs as following:

......
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp: In function ‘bool open3d::io::ReadTriangleMeshFromGLTF(const string&, open3d::geometry::TriangleMesh&, const open3d::io::ReadTriangleMeshOptions&)’:
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp:96:62: error: unused parameter ‘params’ [-Werror=unused-parameter]
   96 |                               const ReadTriangleMeshOptions& params /*={}*/) {
      |                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp: In function ‘bool open3d::io::WriteTriangleMeshToGLTF(const string&, const open3d::geometry::TriangleMesh&, bool, bool, bool, bool, bool, bool)’:
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp:393:35: error: unused parameter ‘write_ascii’ [-Werror=unused-parameter]
  393 |                              bool write_ascii /* = false*/,
      |                              ~~~~~^~~~~~~~~~~
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp:394:35: error: unused parameter ‘compressed’ [-Werror=unused-parameter]
  394 |                              bool compressed /* = false*/,
      |                              ~~~~~^~~~~~~~~~
....../Open3D/cpp/open3d/io/file_format/FileGLTF.cpp:398:35: error: unused parameter ‘print_progress’ [-Werror=unused-parameter]
  398 |                              bool print_progress) {
      |                              ~~~~~^~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [cpp/open3d/io/CMakeFiles/io.dir/build.make:289: cpp/open3d/io/CMakeFiles/io.dir/file_format/FileGLTF.cpp.o] Error 1
......
....../Open3D/cpp/open3d/t/io/file_format/FileXYZI.cpp:41:70: error: unused parameter ‘path’ [-Werror=unused-parameter]
   41 | open3d::io::FileGeometry ReadFileGeometryTypeXYZI(const std::string &path) {