Building the iOS simulator binaries fails due to MetalFX

[jkirsteins]

Tested versions

Git commit: [a013481]

System information

macOS 15.2 (24C101) - iOS SDK 18.2

Issue description

Building a device binary succeeds: scons platform=ios target=template_debug generate_bundle=yes

Building a simulator binary fails: scons platform=ios target=template_debug generate_bundle=yes ios_simulator=yes:

...
[ 72%] Compiling drivers/png/image_loader_png.cpp ...
[ 72%] Compiling drivers/png/png_driver_common.cpp ...
drivers/metal/metal_device_properties.mm:54:9:{54:9-54:28}: fatal error: 'MetalFX/MetalFX.h' file not found [1]
   54 |  #import <MetalFX/MetalFX.h>
      |          ^~~~~~~~~~~~~~~~~~~
1 error generated.
scons: *** [drivers/metal/metal_device_properties.ios.template_debug.arm64.simulator.o] Error 1
drivers/metal/rendering_context_driver_metal.mm:176:40:{176:40-176:85}: error: no known instance method for selector 'presentDrawable:afterMinimumDuration:' [5]
  176 |                         [p_cmd_buffer->get_command_buffer() presentDrawable:drawable afterMinimumDuration:present_minimum_duration];
      |                                                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
scons: *** [drivers/metal/rendering_context_driver_metal.ios.template_debug.arm64.simulator.o] Error 1
scons: building terminated because of errors.

Steps to reproduce

scons platform=ios target=template_debug generate_bundle=yes ios_simulator=yes

Minimal reproduction project (MRP)

N/A

[paulocoutinhox]

When i try i only get:

Showing All Messages
Undefined symbol: _main

[cengiz-pz]

@bruvzg, the iOS simulator build proceeds with warnings and no longer fails:

cengiz-pz@macos26 godot-4.7-dev3 % scons platform=ios target=template_debug generate_bundle=yes ios_simulator=yes
scons: Reading SConscript files ...
Auto-detected 8 CPU cores available for build parallelism. Using 7 cores by default. You can override it with the `-j` or `num_jobs` arguments.
WARNING: iOS Simulator does not support the Metal rendering driver
WARNING: iOS Simulator does not support the Vulkan rendering driver
Building for platform "ios (simulator)", architecture "arm64", target "template_debug".
fatal: not a git repository (or any parent up to mount point /Volumes)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
scons: done reading SConscript files.
scons: Building targets ...
[  0%] Compiling platform/ios/device_metrics.mm ...
[  4%] Compiling platform/ios/display_layer_ios.mm ...
...
[ 71%] Compiling thirdparty/msdfgen/core/shape-description.cpp ...
[ 75%] Linking Static Library bin/obj/modules/freetype/libfreetype_builtin.ios.template_debug.arm64.simulator.a ...
[ 78%] Ranlib Library bin/obj/modules/freetype/libfreetype_builtin.ios.template_debug.arm64.simulator.a ...
[ 97%] Linking Static Library bin/obj/modules/msdfgen/libmsdfgen_builtin.ios.template_debug.arm64.simulator.a ...
Ranlib Library bin/obj/modules/msdfgen/libmsdfgen_builtin.ios.template_debug.arm64.simulator.a ...
[ 97%] Linking Static Library bin/obj/core/libcore.ios.template_debug.arm64.simulator.a ...
Ranlib Library bin/obj/core/libcore.ios.template_debug.arm64.simulator.a ...
[ 97%] Generating bin/libgodot.ios.template_debug.arm64.simulator.a ...
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool -static -o "/godot-4.7-dev3/bin/libgodot.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/platform/ios/libios.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/main/libmain.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodules.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_text_server_adv.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_fbx.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_gltf.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_ktx.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_svg.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_theora.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_vorbis.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_astcenc.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_basis_universal.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_bcdec.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_bmp.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_csg.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_dds.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_enet.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_etcpak.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_gdscript.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_godot_physics_2d.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_godot_physics_3d.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_gridmap.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_hdr.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_interactive_music.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_jolt_physics.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_jpg.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_jsonrpc.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_mbedtls.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_meshoptimizer.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_mobile_vr.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_mp3.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_multiplayer.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_navigation_2d.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_navigation_3d.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_noise.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_objectdb_profiler.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_ogg.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_raycast.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_regex.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_tga.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_tinyexr.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_upnp.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_vhacd.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_webp.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_webrtc.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_websocket.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_webxr.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/libmodule_zip.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/platform/libplatform.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/drivers/libdrivers.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/scene/libscene.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/servers/libservers.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/core/libcore.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/freetype/libfreetype_builtin.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/msdfgen/libmsdfgen_builtin.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/text_server_adv/libharfbuzz_builtin.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/text_server_adv/libgraphite_builtin.ios.template_debug.arm64.simulator.a" "/godot-4.7-dev3/bin/obj/modules/text_server_adv/libicu_builtin.ios.template_debug.arm64.simulator.a"
[ 97%] Generating platform/ios/generate_bundle ...
[ 97%]  Copying "ios" release framework
 Copying "ios" (simulator) debug framework
MoltenVK found at: /Users/cengiz-pz/VulkanSDK/1.4.341.1/macOS/lib/MoltenVK.xcframework
[ 97%] scons: done building targets.
INFO: Time elapsed: 00:05:00.44
cengiz-pz@macos26 godot-4.7-dev3 % xcrun --sdk macosx --show-sdk-version
26.0
cengiz-pz@macos26 godot-4.7-dev3 % xcrun --sdk iphoneos --show-sdk-version
26.0

This issue may no longer be valid in v4.7-dev3. (I haven't tested in any other versions.)

Additionally, FYI: there is a link to this issue from the Godot docs: https://docs.godotengine.org/en/stable/engine_details/development/compiling/compiling_for_ios.html#compiling

[bruvzg]

Build was fixed by #102179 (by disabling broken Metal and Vulkan renderers when building for simulator).