Even after installing the command line tools for xcode-beta13 I get the following error when trying to install wireshark development code in my system after updating to BigSur. bash-3.2$ wireshark/tools/macos-setup.sh macos-setup.sh: Couldn't find an SDK for macOS 11.4 or later bash-3.2$ sudo xcode-select -switch /Library/Developer/CommandLineTools bash-3.2$ cd wireshark bash-3.2$ tools/macos-setup.sh macos-setup.sh: Couldn't find an SDK for macOS 11.4 or later bash-3.2$ Also when I do cmake to setup the wireshark development environment I get the following error bash-3.2$ cmake ../wireshark -- Generating build using CMake 3.19.2 -- LTO/IPO is not enabled -- CMake build type: RelWithDebInfo -- V: 3.5.0, MaV: 3, MiV: 5, PL: 0, EV: . -- Linker flags: -- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE) -- Checking for one of the modules 'glib-2.0' CMake Error at /Users/mmunuswamy/Qt/Tools/CMake/CMake.app/Contents/share/cmake-3.19/Modules/FindPackageHandleStandardArgs.cmake:218 (message): Could NOT find GLIB2 (missing: GLIB2_LIBRARY GLIB2_MAIN_INCLUDE_DIR GLIB2_INTERNAL_INCLUDE_DIR) (Required is at least version "2.38.0") Call Stack (most recent call first): /Users/mmunuswamy/Qt/Tools/CMake/CMake.app/Contents/share/cmake-3.19/Modules/FindPackageHandleStandardArgs.cmake:582 (_FPHSA_FAILURE_MESSAGE) cmake/modules/FindGLIB2.cmake:111 (find_package_handle_standard_args) CMakeLists.txt:1113 (find_package) -- Configuring incomplete, errors occurred! See also "/Users/mmunuswamy/work/wireshark/build/CMakeFiles/CMakeOutput.log". See also "/Users/mmunuswamy/work/wireshark/build/CMakeFiles/CMakeError.log". bash-3.2$ Any help is greatly appreciated. Thanks in advance