CMake: Changes to get CMake project to work with Android (thanks, Martin!).

Fixes Bugzilla #3194.

(but note that Bugzilla #3200 still needs to be resolved to get this really
going on Android, at a minimum.)

CMakeLists.txt

@@ -688,6 +688,52 @@ if(SDL_VIDEO)
   endif()
 endif()
 
+if(ANDROID)
+  file(GLOB ANDROID_CORE_SOURCES ${SDL2_SOURCE_DIR}/src/core/android/*.c)
+  set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_CORE_SOURCES})
+  file(GLOB ANDROID_MAIN_SOURCES ${SDL2_SOURCE_DIR}/src/main/android/*.c)
+  set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_MAIN_SOURCES})
+  if(SDL_AUDIO)
+    set(SDL_AUDIO_DRIVER_ANDROID 1)
+    file(GLOB ANDROID_AUDIO_SOURCES ${SDL2_SOURCE_DIR}/src/audio/android/*.c)
+    set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_AUDIO_SOURCES})
+    set(HAVE_SDL_AUDIO TRUE)
+  endif()
+  if(SDL_FILESYSTEM)
+    set(SDL_FILESYSTEM_ANDROID 1)
+    file(GLOB ANDROID_FILESYSTEM_SOURCES ${SDL2_SOURCE_DIR}/src/filesystem/android/*.c)
+    set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_FILESYSTEM_SOURCES})
+    set(HAVE_SDL_FILESYSTEM TRUE)
+  endif()
+  if(SDL_JOYSTICK)
+    set(SDL_JOYSTICK_ANDROID 1)
+    file(GLOB ANDROID_JOYSTICK_SOURCES ${SDL2_SOURCE_DIR}/src/joystick/android/*.c)
+    set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_JOYSTICK_SOURCES})
+    set(HAVE_SDL_JOYSTICK TRUE)
+  endif()
+  if(SDL_POWER)
+    set(SDL_POWER_ANDROID 1)
+    file(GLOB ANDROID_POWER_SOURCES ${SDL2_SOURCE_DIR}/src/power/android/*.c)
+    set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_POWER_SOURCES})
+    set(HAVE_SDL_POWER TRUE)
+  endif()
+  if(SDL_VIDEO)
+    set(SDL_VIDEO_DRIVER_ANDROID 1)
+    file(GLOB ANDROID_VIDEO_SOURCES ${SDL2_SOURCE_DIR}/src/video/android/*.c)
+    set(SOURCE_FILES ${SOURCE_FILES} ${ANDROID_VIDEO_SOURCES})
+    set(HAVE_SDL_VIDEO TRUE)
+
+    #enable gles
+    if(VIDEO_OPENGLES)
+      set(SDL_VIDEO_OPENGL_EGL 1)
+      set(HAVE_VIDEO_OPENGLES TRUE)
+      set(SDL_VIDEO_OPENGL_ES2 1)
+      set(SDL_VIDEO_RENDER_OGL_ES2 1)
+    endif()
+  endif()
+  list(APPEND EXTRA_LDFLAGS "-Wl,--undefined=Java_org_libsdl_app_SDLActivity_nativeInit")
+endif()
+
 # Platform-specific options and settings
 if(EMSCRIPTEN)
   # Hide noisy warnings that intend to aid mostly during initial stages of porting a new
@@ -1090,7 +1136,7 @@ elseif(APPLE)
 
   # Requires the darwin file implementation
   if(SDL_FILE)
-    file(GLOB EXTRA_SOURCES ${PROJECT_SOURCE_DIR}/src/file/cocoa/*.m)
+    file(GLOB EXTRA_SOURCES ${SDL2_SOURCE_DIR}/src/file/cocoa/*.m)
     set(SOURCE_FILES ${EXTRA_SOURCES} ${SOURCE_FILES})
     set_source_files_properties(${EXTRA_SOURCES} PROPERTIES LANGUAGE C)
     set(HAVE_SDL_FILE TRUE)

include/SDL_config.h.cmake

@@ -197,6 +197,7 @@
 #cmakedefine SDL_FILESYSTEM_DISABLED @SDL_FILESYSTEM_DISABLED@
 
 /* Enable various audio drivers */
+#cmakedefine SDL_AUDIO_DRIVER_ANDROID @SDL_AUDIO_DRIVER_ANDROID@
 #cmakedefine SDL_AUDIO_DRIVER_ALSA @SDL_AUDIO_DRIVER_ALSA@
 #cmakedefine SDL_AUDIO_DRIVER_ALSA_DYNAMIC @SDL_AUDIO_DRIVER_ALSA_DYNAMIC@
 #cmakedefine SDL_AUDIO_DRIVER_ARTS @SDL_AUDIO_DRIVER_ARTS@
@@ -230,6 +231,7 @@
 #cmakedefine SDL_INPUT_LINUXEV @SDL_INPUT_LINUXEV@
 #cmakedefine SDL_INPUT_LINUXKD @SDL_INPUT_LINUXKD@
 #cmakedefine SDL_INPUT_TSLIB @SDL_INPUT_TSLIB@
+#cmakedefine SDL_JOYSTICK_ANDROID @SDL_JOYSTICK_ANDROID@
 #cmakedefine SDL_JOYSTICK_HAIKU @SDL_JOYSTICK_HAIKU@
 #cmakedefine SDL_JOYSTICK_DINPUT @SDL_JOYSTICK_DINPUT@
 #cmakedefine SDL_JOYSTICK_XINPUT @SDL_JOYSTICK_XINPUT@
@@ -268,6 +270,7 @@
 #cmakedefine SDL_TIMER_WINCE @SDL_TIMER_WINCE@
 
 /* Enable various video drivers */
+#cmakedefine SDL_VIDEO_DRIVER_ANDROID @SDL_VIDEO_DRIVER_ANDROID@
 #cmakedefine SDL_VIDEO_DRIVER_HAIKU @SDL_VIDEO_DRIVER_HAIKU@
 #cmakedefine SDL_VIDEO_DRIVER_COCOA @SDL_VIDEO_DRIVER_COCOA@
 #cmakedefine SDL_VIDEO_DRIVER_DIRECTFB @SDL_VIDEO_DRIVER_DIRECTFB@
@@ -331,6 +334,7 @@
 #cmakedefine SDL_VIDEO_OPENGL_OSMESA_DYNAMIC @SDL_VIDEO_OPENGL_OSMESA_DYNAMIC@
 
 /* Enable system power support */
+#cmakedefine SDL_POWER_ANDROID @SDL_POWER_ANDROID@
 #cmakedefine SDL_POWER_LINUX @SDL_POWER_LINUX@
 #cmakedefine SDL_POWER_WINDOWS @SDL_POWER_WINDOWS@
 #cmakedefine SDL_POWER_MACOSX @SDL_POWER_MACOSX@
@@ -339,6 +343,7 @@
 #cmakedefine SDL_POWER_HARDWIRED @SDL_POWER_HARDWIRED@
 
 /* Enable system filesystem support */
+#cmakedefine SDL_FILESYSTEM_ANDROID @SDL_FILESYSTEM_ANDROID@
 #cmakedefine SDL_FILESYSTEM_HAIKU @SDL_FILESYSTEM_HAIKU@
 #cmakedefine SDL_FILESYSTEM_COCOA @SDL_FILESYSTEM_COCOA@
 #cmakedefine SDL_FILESYSTEM_DUMMY @SDL_FILESYSTEM_DUMMY@