diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..e54ec11a
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,50 @@
+cmake_minimum_required(VERSION 3.15.0)
+
+project(Qt
+    VERSION 6.0.0
+    DESCRIPTION "Qt Libraries"
+    HOMEPAGE_URL "https://qt.io/"
+    LANGUAGES CXX C ASM
+)
+
+# Required so we can call ctest from the root build directory
+enable_testing()
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+if (NOT QT_BUILD_STANDALONE_TESTS)
+    list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/qtbase/cmake")
+endif()
+
+include(ECMOptionalAddSubdirectory)
+
+# Use the CMake config files from the binary dir
+list(APPEND CMAKE_PREFIX_PATH "${CMAKE_BINARY_DIR}")
+# Also make sure the CMake config files do not recreate the already-existing targets
+if (NOT QT_BUILD_STANDALONE_TESTS)
+    set(QT_NO_CREATE_TARGETS TRUE)
+endif()
+set(QT_SUPERBUILD TRUE)
+
+# qtbase is always needed
+add_subdirectory(qtbase)
+
+if (NOT QT_BUILD_STANDALONE_TESTS)
+    list(APPEND CMAKE_PREFIX_PATH "${QtBase_BINARY_DIR}")
+endif()
+
+ecm_optional_add_subdirectory(qtconnectivty)
+ecm_optional_add_subdirectory(qtdeclarative)
+ecm_optional_add_subdirectory(qtgraphicaleffects)
+ecm_optional_add_subdirectory(qtimageformats)
+ecm_optional_add_subdirectory(qtsvg)
+ecm_optional_add_subdirectory(qtquickcontrols2)
+ecm_optional_add_subdirectory(qtgamepad)
+ecm_optional_add_subdirectory(qttools)
+
+
+if(NOT QT_BUILD_STANDALONE_TESTS)
+    # Display a summary of everything
+    include(QtBuildInformation)
+    qt_print_feature_summary()
+    qt_print_build_instructions()
+endif()
diff --git a/cmake/ECMOptionalAddSubdirectory.cmake b/cmake/ECMOptionalAddSubdirectory.cmake
new file mode 100644
index 00000000..79a533d4
--- /dev/null
+++ b/cmake/ECMOptionalAddSubdirectory.cmake
@@ -0,0 +1,73 @@
+#.rst:
+# ECMOptionalAddSubdirectory
+# --------------------------
+#
+# Make subdirectories optional.
+#
+# ::
+#
+#   ecm_optional_add_subdirectory(<dir>)
+#
+# This behaves like add_subdirectory(), except that it does not complain if the
+# directory does not exist.  Additionally, if the directory does exist, it
+# creates an option to allow the user to skip it. The option will be named
+# BUILD_<dir>.
+#
+# This is useful for "meta-projects" that combine several mostly-independent
+# sub-projects.
+#
+# If the CMake variable DISABLE_ALL_OPTIONAL_SUBDIRECTORIES is set to TRUE for
+# the first CMake run on the project, all optional subdirectories will be
+# disabled by default (but can of course be enabled via the respective options).
+# For example, the following will disable all optional subdirectories except the
+# one named "foo":
+#
+# .. code-block:: sh
+#
+#   cmake -DDISABLE_ALL_OPTIONAL_SUBDIRECTORIES=TRUE -DBUILD_foo=TRUE myproject
+#
+# Since pre-1.0.0.
+
+#=============================================================================
+# Copyright 2007 Alexander Neundorf <neundorf@kde.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+function(ECM_OPTIONAL_ADD_SUBDIRECTORY _dir)
+  get_filename_component(_fullPath ${_dir} ABSOLUTE)
+  if(EXISTS ${_fullPath}/CMakeLists.txt)
+    if(DISABLE_ALL_OPTIONAL_SUBDIRECTORIES)
+      set(_DEFAULT_OPTION_VALUE FALSE)
+    else()
+      set(_DEFAULT_OPTION_VALUE TRUE)
+    endif()
+    if(DISABLE_ALL_OPTIONAL_SUBDIRS  AND NOT DEFINED  BUILD_${_dir})
+      set(_DEFAULT_OPTION_VALUE FALSE)
+    endif()
+    option(BUILD_${_dir} "Build directory ${_dir}" ${_DEFAULT_OPTION_VALUE})
+    if(BUILD_${_dir})
+      add_subdirectory(${_dir})
+    endif()
+  endif()
+endfunction()