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Bug 5030 - Compile for iOS without joystick fails
Summary: Compile for iOS without joystick fails
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: joystick (show other bugs)
Version: 2.0.10
Hardware: ARM iOS (All)
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords: target-2.0.14
Depends on:
Blocks:
 
Reported: 2020-03-15 06:03 UTC by Ron Aaron
Modified: 2020-06-27 01:55 UTC (History)
1 user (show)

See Also:

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Description Ron Aaron 2020-03-15 06:03:01 UTC 
If I compile normally, the linker complains about a lot of missing joystick stuff.  If I compile with --disable-joystick, I still get:

Undefined symbols for architecture armv7:
  "_HIDAPI_UpdateDevices", referenced from:
      _SDL_JoystickUpdate in libSDL2.a(SDL_joystick.o)
  "_SDL_AppleTVRemoteOpenedAsJoystick", referenced from:
      -[SDL_uikitview pressesBegan:withEvent:] in libSDL2.a(SDL_uikitview.o)
      -[SDL_uikitview pressesEnded:withEvent:] in libSDL2.a(SDL_uikitview.o)
      -[SDL_uikitview pressesCancelled:withEvent:] in libSDL2.a(SDL_uikitview.o)
  "_SDL_HIDAPI_JoystickDriver", referenced from:
      _SDL_joystick_drivers in libSDL2.a(SDL_joystick.o)
  "_SDL_IOS_JoystickDriver", referenced from:
      _SDL_joystick_drivers in libSDL2.a(SDL_joystick.o)
Comment 1 Sam Lantinga 2020-03-16 20:18:54 UTC 
Is this using Xcode? If not, how are you building it?
Comment 2 Ron Aaron 2020-03-17 04:49:10 UTC 
Using 'build-scripts/iosbuild.sh'
Comment 3 Ron Aaron 2020-03-17 04:51:34 UTC 
Just FYI, I have a similar issue on Android in that the created libSDL2.a is missing things: 

./src/joystick/hidapi/SDL_hidapijoystick.c:573: error: undefined reference to 'hid_init'
./src/joystick/hidapi/SDL_hidapijoystick.c:811: error: undefined reference to 'hid_enumerate'


that's created using the androidbuildlibs.sh script on Linux. Should I open a separate bug for that?
Comment 4 Sam Lantinga 2020-05-27 17:41:55 UTC 
Can you try the latest SDL snapshot?
http://www.libsdl.org/tmp/SDL-2.0.zip

You shouldn't get iOS errors about missing joystick stuff anymore when you build normally.
If you build on iOS without joystick support you'll need to edit include/SDL_config_iphoneos.h to define SDL_JOYSTICK_DISABLED and comment out the other JOYSTICK drivers listed there.

On Android I recommend using the shared library. If you don't, you'll need to link with hidapi, which is only available as a shared library:
[armeabi-v7a] SharedLibrary  : libhidapi.so
[armeabi-v7a] Compile thumb  : cpufeatures <= cpu-features.c
[armeabi-v7a] StaticLibrary  : libcpufeatures.a
[armeabi-v7a] SharedLibrary  : libSDL2.so
[armeabi-v7a] Install        : libSDL2.so => build/android/lib/armeabi-v7a/libSDL2.so
[armeabi-v7a] StaticLibrary  : libSDL2main.a
[armeabi-v7a] Install        : libhidapi.so => build/android/lib/armeabi-v7a/libhidapi.so

Does this take care of the issues you're running into?
Comment 5 Ryan C. Gordon 2020-06-27 01:55:16 UTC 
This bug appears to be resolved. Ron, if you're still having issues, please reopen it and we'll look into it further. Thanks!

--ryan.