Question

我正在尝试在Ubuntu上为Android编译SDL2。

我使用./configure配置SDL2 --host = arm-linux-androideabi

使用ndk-build编译后，我得到一系列未定义的引用：

Compile thumb  : SDL2-2.0.0 <= SDL_androidkeyboard.c
Compile thumb  : SDL2-2.0.0 <= SDL_androidtouch.c
Compile thumb  : SDL2-2.0.0 <= SDL_androidvideo.c
Compile thumb  : SDL2-2.0.0 <= SDL_androidwindow.c
SharedLibrary  : libSDL2-2.0.0.so
/home/ire018/Applications/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/ire018/workspace/SDLActivity/obj/local/armeabi/objs/SDL2-2.0.0/src/audio/SDL_audio.o: in function bootstrap:SDL_audio.c(.data.rel.ro+0x0): error: undefined reference to 'PULSEAUDIO_bootstrap'
/home/ire018/Applications/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/ire018/workspace/SDLActivity/obj/local/armeabi/objs/SDL2-2.0.0/src/audio/SDL_audio.o: in function bootstrap:SDL_audio.c(.data.rel.ro+0x4): error: undefined reference to 'DISKAUD_bootstrap'
/home/ire018/Applications/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/ire018/workspace/SDLActivity/obj/local/armeabi/objs/SDL2-2.0.0/src/core/android/SDL_android.o: in function Java_org_libsdl_app_SDLActivity_onNativeResize:/home/ire018/workspace/SDLActivity/jni/SDL2-2.0.0/src/core/android/SDL_android.c:148: error: undefined reference to 'Android_SetScreenResolution'
/home/ire018/Applications/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/ire018/workspace/SDLActivity/obj/local/armeabi/objs/SDL2-2.0.0/src/core/android/SDL_android.o: in function Java_org_libsdl_app_SDLActivity_onNativeKeyDown:/home/ire018/workspace/SDLActivity/jni/SDL2-2.0.0/src/core/android/SDL_android.c:155: error: undefined reference to 'Android_OnKeyDown'
/home/ire018/Applications/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/ire018/workspace/SDLActivity/obj/local/armeabi/objs/SDL2-2.0.0/src/core/android/SDL_android.o: in function Java_org_libsdl_app_SDLActivity_onNativeKeyUp:/home/ire018/workspace/SDLActivity/jni/SDL2-2.0.0/src/core/android/SDL_android.c:162: error: undefined reference to 'Android_OnKeyUp'

有什么建议吗？

Answer 1

如果您使用的是ndk-build系统，则不必使用“configure”。

虽然技术上可行，但使用“configure; make”（即自动工具方式）将SDL2交叉编译到Android可能会被窃听。人们所做的只是使用提供的Android.mk文件并使用ndk-build直接构建（请参阅Readme-android.txt中“建立应用程序”标题下提供的说明）

Answer 2

从一个刚刚解压缩的SDL存档，我建议只使用ndk-build命令来构建Android的SDL。这是the command I use：

ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=./Android.mk \
    APP_PLATFORM=android-18

您必须为您的配置调整APP_PLATFORM的值，并确保使用提供GLES 2的Android API。

为Android编译SDL2

2 个答案: