Cannot find source file: /usr/ports/audio/sfizz-ui/work/sfizz-ui-1.2.3/plugins/editor/external/vstgui4/vstgui/lib/platform/linux/cairocontext.cpp

[yurivict]

Configure fails:

-- Configuring done (0.6s)
CMake Error at plugins/editor/cmake/Vstgui.cmake:122 (target_sources):
  Cannot find source file:

    /usr/ports/audio/sfizz-ui/work/sfizz-ui-1.2.3/plugins/editor/external/vstgui4/vstgui/lib/platform/linux/cairocontext.cpp

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
  .ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
  .f95 .f03 .hip .ispc
Call Stack (most recent call first):
  plugins/editor/CMakeLists.txt:9 (include)

The submodule at plugins/editor/external/vstgui4 references this file. but doesn't contain it.
git submodule's revision: 6ab1209ac82fc7af0fd3904cd9095036cc1403f7

Version: 1.2.3