"error: call to 'Selectable' is ambiguous" while building as a dependency using clang-cl

[cameronprater]

I am getting the following error when trying to build Dear ImGui as part of my project using CMake and the latest clang-cl :

D:\Users\User\VSCodeProjects\engine\vendor\dear_imgui\imgui.cpp(15451,17): error: call to 'Selectable' is ambiguous
 15451 |                 Selectable(buf, false);
       |                 ^~~~~~~~~~
D:\Users\User\VSCodeProjects\engine\vendor\dear_imgui/imgui.h(669,29): note: candidate function
  669 |     IMGUI_API bool          Selectable(const char* label, bool selected = false, ImGuiSelectableFlags flags = 0, const ImVec2& size = ImVec2(0, 0)); // "bool selected" carry the selection state (read-only). Selectable() is clicked is returns true so you can modify your selection state. size.x==0.0: use remaining width, size.x>0.0: specify width. size.y==0.0: use label height, size.y>0.0: specify height
      |                             ^
D:\Users\User\VSCodeProjects\engine\vendor\dear_imgui/imgui.h(670,29): note: candidate function
  670 |     IMGUI_API bool          Selectable(const char* label, bool* p_selected, ImGuiSelectableFlags flags = 0, const ImVec2& size = ImVec2(0, 0));      // "bool* p_selected" point to 
the selection state (read-write), as a convenient helper.
      |                             ^

Here is how I am building Dear ImGui:

find_path(IMGUI_INCLUDE_DIR
    imgui.h
    PATHS "${ENGINE_VENDOR_DIR}/dear_imgui"
    REQUIRED
)

add_library(DearImgui ${ENGINE_LIB_TYPE} "${IMGUI_INCLUDE_DIR}/imgui.h")
target_sources(DearImgui PUBLIC
    #"${IMGUI_INCLUDE_DIR}/backends/imgui_impl_glfw.cpp"
    #"${IMGUI_INCLUDE_DIR}/backends/imgui_impl_glfw.h"
    "${IMGUI_INCLUDE_DIR}/imconfig.h"
    "${IMGUI_INCLUDE_DIR}/imgui_draw.cpp"
    "${IMGUI_INCLUDE_DIR}/imgui_internal.h"
    "${IMGUI_INCLUDE_DIR}/imgui_tables.cpp"
    "${IMGUI_INCLUDE_DIR}/imgui_widgets.cpp"
    "${IMGUI_INCLUDE_DIR}/imgui.cpp"
    "${IMGUI_INCLUDE_DIR}/imstb_rectpack.h"
    "${IMGUI_INCLUDE_DIR}/imstb_textedit.h"
    "${IMGUI_INCLUDE_DIR}/imstb_truetype.h"
)
target_link_libraries(DearImgui PUBLIC glfw)
target_include_directories(DearImgui PUBLIC
    $<BUILD_INTERFACE:${IMGUI_INCLUDE_DIR}>
    $<BUILD_INTERFACE:${IMGUI_INCLUDE_DIR}/backends>
    $<INSTALL_INTERFACE:include>
)

Here is relevant parts of the top-level CMakeLists:

project(
    engine 
    VERSION 0.0 
    LANGUAGES C CXX
)

set(CMAKE_C_STANDARD 17)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

Here is how I invoke CMake after calling vcvars64 in the same terminal:

@echo off
set LLVM=D:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\Llvm\x64\bin
cmake -S . -B ./build -G "Ninja" -DCMAKE_C_COMPILER:FILEPATH="%LLVM%\clang-cl.exe" -DCMAKE_CXX_COMPILER:FILEPATH="%LLVM%\clang-cl.exe" -DCMAKE_LINKER_TYPE=LLD -DCMAKE_BUILD_TYPE=Debug
cmake --build ./build --clean-first

The goal is to use Dear ImGui in my C library by building then linking to Dear Bindings, then linking the C library to Dear Bindings, but I cannot get Dear ImGui to build because of this error.

I'm not sure what the problem is.