Added stub Steam Controller sources to Android and iOS command line builds

CMakeLists.txt

@@ -816,7 +816,7 @@ if(ANDROID)
   endif()
   if(SDL_JOYSTICK)
     set(SDL_JOYSTICK_ANDROID 1)
-    file(GLOB ANDROID_JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/android/*.c)
+    file(GLOB ANDROID_JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/android/*.c ${SDL2_SOURCE_DIR}/src/joystick/steam/*.c)
     set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_JOYSTICK_SOURCES})
     set(HAVE_SDL_JOYSTICK TRUE)
   endif()
@@ -1055,7 +1055,7 @@ elseif(UNIX AND NOT APPLE AND NOT ANDROID)
     CheckUSBHID()   # seems to be BSD specific - limit the test to BSD only?
     if(LINUX AND NOT ANDROID)
       set(SDL_JOYSTICK_LINUX 1)
-      file(GLOB JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/linux/*.c)
+      file(GLOB JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/linux/*.c ${SDL2_SOURCE_DIR}/src/joystick/steam/*.c)
       set(SOURCE_FILES ${SOURCE_FILES} ${JOYSTICK_SOURCES})
       set(HAVE_SDL_JOYSTICK TRUE)
     endif()
@@ -1382,7 +1382,7 @@ elseif(APPLE)
   if(SDL_JOYSTICK)
     set(SDL_JOYSTICK_IOKIT 1)
     if (IOS)
-      file(GLOB JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/iphoneos/*.m)
+      file(GLOB JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/iphoneos/*.m ${SDL2_SOURCE_DIR}/src/joystick/steam/*.c)
     else()
       file(GLOB JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/darwin/*.c)
     endif()

configure

@@ -23847,6 +23847,7 @@ $as_echo "#define SDL_JOYSTICK_LINUX 1" >>confdefs.h
 $as_echo "#define SDL_JOYSTICK_ANDROID 1" >>confdefs.h
 
                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
+                SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
                 have_joystick=yes
             ;;
           esac
@@ -24244,6 +24245,7 @@ $as_echo "#define SDL_AUDIO_DRIVER_COREAUDIO 1" >>confdefs.h
 $as_echo "#define SDL_JOYSTICK_MFI 1" >>confdefs.h
 
             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
+            SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
             have_joystick=yes
         fi
         # Set up files for the haptic library

configure.in

@@ -3366,6 +3366,7 @@ case "$host" in
             android)
                 AC_DEFINE(SDL_JOYSTICK_ANDROID, 1, [ ])
                 SOURCES="$SOURCES $srcdir/src/joystick/android/*.c"
+                SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
                 have_joystick=yes
             ;;
           esac
@@ -3645,6 +3646,7 @@ AC_HELP_STRING([--enable-render-d3d], [enable the Direct3D render driver [[defau
         if test x$enable_joystick = xyes; then
             AC_DEFINE(SDL_JOYSTICK_MFI, 1, [ ])
             SOURCES="$SOURCES $srcdir/src/joystick/iphoneos/*.m"
+            SOURCES="$SOURCES $srcdir/src/joystick/steam/*.c"
             have_joystick=yes
         fi
         # Set up files for the haptic library