From b105a726e617293e0e992141bd27e6a57bf3a341 Mon Sep 17 00:00:00 2001
From: Martin Valgur <martin.valgur@gmail.com>
Date: Mon, 23 Sep 2024 11:03:50 +0300
Subject: [PATCH] imgui: move Objective-C++ backends to a separate test

---
 recipes/imgui/all/test_package/CMakeLists.txt | 11 +++++--
 recipes/imgui/all/test_package/conanfile.py   |  8 +++--
 .../imgui/all/test_package/test_package.cpp   | 12 -------
 .../imgui/all/test_package/test_package.mm    | 33 +++++++++++++++++++
 4 files changed, 48 insertions(+), 16 deletions(-)
 create mode 100644 recipes/imgui/all/test_package/test_package.mm

diff --git a/recipes/imgui/all/test_package/CMakeLists.txt b/recipes/imgui/all/test_package/CMakeLists.txt
index d1d70c69f26349..3c687295fb27c1 100644
--- a/recipes/imgui/all/test_package/CMakeLists.txt
+++ b/recipes/imgui/all/test_package/CMakeLists.txt
@@ -1,10 +1,17 @@
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.15)
 project(test_package LANGUAGES CXX)
 
 find_package(imgui REQUIRED CONFIG)
 
+add_compile_definitions("IMGUI_USER_CONFIG=\"${CMAKE_CURRENT_SOURCE_DIR}/my_imgui_config.h\"")
 add_executable(${PROJECT_NAME} test_package.cpp)
 # Using the aggregate target for easier testing.
 target_link_libraries(${PROJECT_NAME} PRIVATE imgui::imgui_all)
-target_compile_definitions(${PROJECT_NAME} PUBLIC "IMGUI_USER_CONFIG=\"${CMAKE_CURRENT_SOURCE_DIR}/my_imgui_config.h\"")
 target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_11)
+
+if(APPLE)
+    enable_language(OBJCXX)
+    target_sources(${PROJECT_NAME}_objcxx PRIVATE test_package.mm)
+    target_link_libraries(${PROJECT_NAME}_objcxx PRIVATE imgui::imgui_all)
+    target_compile_features(${PROJECT_NAME}_objcxx PRIVATE cxx_std_11)
+endif()
diff --git a/recipes/imgui/all/test_package/conanfile.py b/recipes/imgui/all/test_package/conanfile.py
index 75c7df8e6198ce..c450d7c3758a8b 100644
--- a/recipes/imgui/all/test_package/conanfile.py
+++ b/recipes/imgui/all/test_package/conanfile.py
@@ -1,8 +1,8 @@
 from conan import ConanFile
+from conan.tools.apple import is_apple_os
 from conan.tools.build import can_run
 from conan.tools.cmake import cmake_layout, CMake, CMakeToolchain
 import os
-import re
 
 
 class TestPackageConan(ConanFile):
@@ -56,5 +56,9 @@ def build(self):
 
     def test(self):
         if can_run(self):
-            bin_path = os.path.join(self.cpp.build.bindirs[0], "test_package")
+            bin_path = os.path.join(self.cpp.build.bindir, "test_package")
             self.run(bin_path, env="conanrun")
+
+            if is_apple_os(self):
+                bin_path = os.path.join(self.cpp.build.bindir, "test_package_objcxx")
+                self.run(bin_path, env="conanrun")
diff --git a/recipes/imgui/all/test_package/test_package.cpp b/recipes/imgui/all/test_package/test_package.cpp
index 37a6bce806623f..26d62cfba7375f 100644
--- a/recipes/imgui/all/test_package/test_package.cpp
+++ b/recipes/imgui/all/test_package/test_package.cpp
@@ -28,18 +28,12 @@
 #ifdef IMGUI_IMPL_GLUT
     #include <imgui_impl_glut.h>
 #endif
-#ifdef IMGUI_IMPL_METAL
-    #include <imgui_impl_metal.h>
-#endif
 #ifdef IMGUI_IMPL_OPENGL2
     #include <imgui_impl_opengl2.h>
 #endif
 #ifdef IMGUI_IMPL_OPENGL3
     #include <imgui_impl_opengl3.h>
 #endif
-#ifdef IMGUI_IMPL_OSX
-    #include <imgui_impl_osx.h>
-#endif
 #ifdef IMGUI_IMPL_SDL2
     #include <imgui_impl_sdl2.h>
 #endif
@@ -86,18 +80,12 @@ void test_backends() {
 #ifdef IMGUI_IMPL_GLUT
     ImGui_ImplGLUT_Shutdown();
 #endif
-#ifdef IMGUI_IMPL_METAL
-    ImGui_ImplMetal_Shutdown();
-#endif
 #ifdef IMGUI_IMPL_OPENGL2
     ImGui_ImplOpenGL2_Shutdown();
 #endif
 #ifdef IMGUI_IMPL_OPENGL3
     ImGui_ImplOpenGL3_Shutdown();
 #endif
-#ifdef IMGUI_IMPL_OSX
-    ImGui_ImplOSX_Shutdown();
-#endif
 #ifdef IMGUI_IMPL_SDL2
     ImGui_ImplSDL2_Shutdown();
 #endif
diff --git a/recipes/imgui/all/test_package/test_package.mm b/recipes/imgui/all/test_package/test_package.mm
new file mode 100644
index 00000000000000..56feca5cbfd6c6
--- /dev/null
+++ b/recipes/imgui/all/test_package/test_package.mm
@@ -0,0 +1,33 @@
+#include <imgui.h>
+
+#ifdef DOCKING
+    #include <imgui_internal.h>
+#endif
+
+#ifdef IMGUI_IMPL_OSX
+   #include <imgui_impl_osx.h>
+#endif
+#ifdef IMGUI_IMPL_METAL
+   #include <imgui_impl_metal.h>
+#endif
+
+#include <cstdio>
+
+void test_backends() {
+#ifdef IMGUI_IMPL_OSX
+    ImGui_ImplOSX_Shutdown();
+#endif
+#ifdef IMGUI_IMPL_METAL
+    ImGui_ImplMetal_Shutdown();
+#endif
+}
+
+int main() {
+    printf("IMGUI VERSION: %s\n", IMGUI_VERSION);
+    ImGui::CreateContext();
+#ifdef DOCKING
+    printf("  with docking\n");
+#endif
+    ImGui::DestroyContext();
+    return 0;
+}