👋👋,CMake can't find the source files:

[XMNXofficial]

Hello! I want to make the sources in Ubuntu22.10,and i ran into a problem🥵🥵
I'm very sorry I came for your help.

CMake Error at external/CMakeLists.txt:33 (add_library):
  Cannot find source file:

    /home/zhouzihao/MYFILE/imgui_learning1/hello_imgui/external/imgui/misc/cpp/imgui_stdlib.cpp

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm .h
  .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90 .f95 .f03 .hip .ispc


CMake Error at src/hello_imgui/CMakeLists.txt:11 (add_library):
  Cannot find source file:

    /home/zhouzihao/MYFILE/imgui_learning1/hello_imgui/external/imgui/backends/imgui_impl_opengl3.h

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm .h
  .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90 .f95 .f03 .hip .ispc


CMake Error at external/CMakeLists.txt:33 (add_library):
  No SOURCES given to target: imgui

I cd to this path ,and I can't find these sources.
ps.I use these commands to make CMake file

mkdir build && cd build && cmake .. && cmake --build . -j 4
./hello_world

[Pascal Thomet]

Hi!

Did you checkout the submodules?

if not, you need to run:

git submodule update --init --recursive

[XMNXofficial]

你好！

您是否签出了子模块？

如果没有，则需要运行：

git submodule update --init --recursive

thanks！