cmake seems to treat builddir as a regex and fails if builddir contains quantor characters (+)

~/Qt/qt5-build-c++17/

[...]
-- Checking 'ulimit -n'
 -- Open files limit 4096
-- Performing Test HAVE_re2
-- Performing Test HAVE_re2 - Success
-- Performing Test HAVE_snappy
-- Performing Test HAVE_snappy - Success
-- Performing Test HAVE_libxml2
-- Performing Test HAVE_libxml2 - Success
-- Performing Test HAVE_jpeg
-- Performing Test HAVE_jpeg - Success
-- Performing Test HAVE_freetype
-- Performing Test HAVE_freetype - Success
-- Performing Test HAVE_khr
-- Performing Test HAVE_khr - Success
-- Performing Test HAVE_winversion
-- Performing Test HAVE_winversion - Failed
RegularExpression::compile(): Nested *?+.
RegularExpression::compile(): Error in compile.
CMake Error at /home/marc/Qt/qt5-build-c++17/qtbase/lib/cmake/Qt6/QtFeature.cmake:70 (if):
  if given arguments:

    "Ninja_EXECUTABLE" "MATCHES" "/home/marc/Qt/qt5-build-c++17/qtwebengine"

  Regular expression "/home/marc/Qt/qt5-build-c++17/qtwebengine" cannot
  compile
Call Stack (most recent call first):
  /home/marc/Qt/qt5-build-c++17/qtbase/lib/cmake/Qt6/QtFeature.cmake:167 (qt_evaluate_to_boolean)
  /home/marc/Qt/qt5-build-c++17/qtbase/lib/cmake/Qt6/QtFeature.cmake:354 (qt_evaluate_config_expression)
  /home/marc/Qt/qt5-build-c++17/qtbase/lib/cmake/Qt6/QtFeature.cmake:606 (qt_evaluate_feature)
  qtwebengine/src/CMakeLists.txt:14 (qt_feature_module_end)


-- Configuring incomplete, errors occurred!
See also "/home/marc/Qt/qt5-build-c++17/CMakeFiles/CMakeOutput.log".
See also "/home/marc/Qt/qt5-build-c++17/CMakeFiles/CMakeError.log".
CMake Error at /home/marc/Qt/qt5/qtbase/cmake/QtProcessConfigureArgs.cmake:963 (message):
  CMake exited with code 1.