imgui-frontend-engineer: add iOS platform scaffolding

cmake/dependencies/httplib.cmake

@@ -10,6 +10,29 @@ include(cmake/dependencies.lock)
 
 message(STATUS "Setting up cpp-httplib ${HTTPLIB_VERSION}")
 
+if(YAZE_PLATFORM_IOS)
+  CPMAddPackage(
+    NAME httplib
+    VERSION ${HTTPLIB_VERSION}
+    GITHUB_REPOSITORY yhirose/cpp-httplib
+    GIT_TAG v${HTTPLIB_VERSION}
+    DOWNLOAD_ONLY YES
+  )
+
+  if(NOT TARGET httplib)
+    add_library(httplib INTERFACE)
+    target_include_directories(httplib INTERFACE ${httplib_SOURCE_DIR})
+  endif()
+  if(NOT TARGET httplib::httplib)
+    add_library(httplib::httplib ALIAS httplib)
+  endif()
+
+  set(YAZE_HTTPLIB_TARGETS httplib::httplib)
+  set(YAZE_HTTPLIB_TARGETS httplib::httplib CACHE INTERNAL "cpp-httplib targets")
+  message(STATUS "cpp-httplib configured as header-only for iOS")
+  return()
+endif()
+
 set(_YAZE_USE_SYSTEM_HTTPLIB ${YAZE_USE_SYSTEM_DEPS})
 
 # Try to use system packages first

cmake/dependencies/imgui.cmake

@@ -21,6 +21,12 @@ else()
   message(STATUS "Using ImGui SDL2 backend")
 endif()
 
+if(YAZE_PLATFORM_IOS)
+  list(APPEND IMGUI_BACKEND_SOURCES
+    ${IMGUI_DIR}/backends/imgui_impl_metal.mm
+  )
+endif()
+
 # Create ImGui library with core files from bundled source
 add_library(ImGui STATIC
   ${IMGUI_DIR}/imgui.cpp

cmake/dependencies/sdl2.cmake

@@ -74,7 +74,7 @@ if(NOT TARGET yaze_sdl2)
     target_link_libraries(yaze_sdl2 INTERFACE SDL2::SDL2-static)
     # For local Homebrew SDL2, also add include path explicitly
     # SDL headers are in the SDL2 subdirectory
-    if(APPLE AND EXISTS "/opt/homebrew/opt/sdl2/include/SDL2")
+    if(YAZE_PLATFORM_MACOS AND EXISTS "/opt/homebrew/opt/sdl2/include/SDL2")
       target_include_directories(yaze_sdl2 INTERFACE /opt/homebrew/opt/sdl2/include/SDL2)
       message(STATUS "Added Homebrew SDL2 include path: /opt/homebrew/opt/sdl2/include/SDL2")
     endif()
@@ -94,7 +94,7 @@ if(WIN32)
     wbemuuid
   )
   target_compile_definitions(yaze_sdl2 INTERFACE SDL_MAIN_HANDLED)
-elseif(APPLE)
+elseif(YAZE_PLATFORM_MACOS)
   target_link_libraries(yaze_sdl2 INTERFACE
     "-framework Cocoa"
     "-framework IOKit"
@@ -102,6 +102,20 @@ elseif(APPLE)
     "-framework ForceFeedback"
   )
   target_compile_definitions(yaze_sdl2 INTERFACE SDL_MAIN_HANDLED)
+elseif(YAZE_PLATFORM_IOS)
+  target_link_libraries(yaze_sdl2 INTERFACE
+    "-framework UIKit"
+    "-framework Foundation"
+    "-framework CoreGraphics"
+    "-framework CoreVideo"
+    "-framework CoreMotion"
+    "-framework QuartzCore"
+    "-framework AVFoundation"
+    "-framework AudioToolbox"
+    "-framework Metal"
+    "-framework GameController"
+  )
+  target_compile_definitions(yaze_sdl2 INTERFACE SDL_MAIN_HANDLED)
 elseif(UNIX)
   find_package(PkgConfig REQUIRED)
   pkg_check_modules(GTK3 REQUIRED gtk+-3.0)

cmake/dependencies/sdl3.cmake

@@ -63,7 +63,7 @@ if(NOT TARGET yaze_sdl3)
     message(STATUS "Using SDL3::SDL3-static target")
     target_link_libraries(yaze_sdl3 INTERFACE SDL3::SDL3-static)
     # For local Homebrew SDL3, also add include path explicitly
-    if(APPLE AND EXISTS "/opt/homebrew/opt/sdl3/include/SDL3")
+    if(YAZE_PLATFORM_MACOS AND EXISTS "/opt/homebrew/opt/sdl3/include/SDL3")
       target_include_directories(yaze_sdl3 INTERFACE /opt/homebrew/opt/sdl3/include/SDL3)
       message(STATUS "Added Homebrew SDL3 include path: /opt/homebrew/opt/sdl3/include/SDL3")
     endif()
@@ -83,7 +83,7 @@ if(WIN32)
     wbemuuid
   )
   target_compile_definitions(yaze_sdl3 INTERFACE SDL_MAIN_HANDLED)
-elseif(APPLE)
+elseif(YAZE_PLATFORM_MACOS)
   target_link_libraries(yaze_sdl3 INTERFACE
     "-framework Cocoa"
     "-framework IOKit"
@@ -93,6 +93,20 @@ elseif(APPLE)
     "-framework GameController"
   )
   target_compile_definitions(yaze_sdl3 INTERFACE SDL_MAIN_HANDLED)
+elseif(YAZE_PLATFORM_IOS)
+  target_link_libraries(yaze_sdl3 INTERFACE
+    "-framework UIKit"
+    "-framework Foundation"
+    "-framework CoreGraphics"
+    "-framework CoreVideo"
+    "-framework CoreMotion"
+    "-framework QuartzCore"
+    "-framework AVFoundation"
+    "-framework AudioToolbox"
+    "-framework Metal"
+    "-framework GameController"
+  )
+  target_compile_definitions(yaze_sdl3 INTERFACE SDL_MAIN_HANDLED)
 elseif(UNIX)
   find_package(PkgConfig REQUIRED)
   pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
@@ -107,4 +121,4 @@ set(YAZE_SDL3_TARGETS yaze_sdl3)
 # Set a flag to indicate SDL3 is being used
 set(YAZE_SDL2_TARGETS ${YAZE_SDL3_TARGETS})  # For compatibility with existing code
 
-message(STATUS "SDL3 setup complete - YAZE_SDL3_TARGETS = ${YAZE_SDL3_TARGETS}")
+message(STATUS "SDL3 setup complete - YAZE_SDL3_TARGETS = ${YAZE_SDL3_TARGETS}")