Android NDK错误：找不到所需的库和未定义的引用错误 我试图从.C++代码生成.so文件，这是我的ANDROID.MK文件： #this directory variable declaration LOCAL_PATH := $(call my-dir) FFMPEG_PREBUILT_PATH := $(LOCAL_PATH)/../libs/armeabi/ #mconfnativeshowvideo module START include $(CLEAR_VARS) LOCAL_MODULE := mconfnativeshowvideo LOCAL_SRC_FILES := \ mconfnative/DrawerManager.cpp \ mconfnative/VideoDrawer.cpp LOCAL_CXXFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/iva/queue \ $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/ffmpeg LOCAL_SHARED_LIBRARIES := queue thread common decode LOCAL_LDLIBS := -lGLESv1_CM -L$(FFMPEG_PREBUILT_PATH) -lavcodec include $(BUILD_SHARED_LIBRARY) #mconfnativeshowvideo module END #mconfnativeencodevideo module START include $(CLEAR_VARS) LOCAL_MODULE := mconfnativeencodevideo LOCAL_SRC_FILES := \ mconfnative/EncoderManager.cpp \ mconfnative/VideoEncoder.cpp \ mconfnative/ImageRotator.cpp LOCAL_CXXFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/iva/queue \ $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/ffmpeg LOCAL_SHARED_LIBRARIES := queue thread common encode include $(BUILD_SHARED_LIBRARY) #mconfnativeencodevideo module END #thread module include $(CLEAR_VARS) LOCAL_MODULE := thread LOCAL_CFLAGS := -std=gnu++0x LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/common LOCAL_CPPFLAGS += -fexceptions LOCAL_SRC_FILES := \ iva/thread/ConditionVariable.cpp \ iva/thread/Interval.cpp \ iva/thread/Interval_linux.cpp \ iva/thread/Microseconds.cpp \ iva/thread/Milliseconds.cpp \ iva/thread/Mutex.cpp \ iva/thread/Seconds.cpp \ iva/thread/Thread.cpp \ iva/thread/Timer.cpp include $(BUILD_SHARED_LIBRARY) #end of thread module #common module include $(CLEAR_VARS) LOCAL_MODULE := common LOCAL_SHARED_LIBRARIES := thread LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/ffmpeg LOCAL_LDLIBS += -llog -L$(FFMPEG_PREBUILT_PATH) -lavcodec -lavutil LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_CPPFLAGS += -fexceptions LOCAL_SRC_FILES := \ iva/common/AVConfigs.cpp \ iva/common/CommonColor.cpp \ iva/common/CommonRect.cpp \ iva/common/Directory.cpp \ iva/common/Directory_linux.cpp \ iva/common/ErrorController.cpp \ iva/common/ErrorData.cpp \ iva/common/ErrorStack.cpp \ iva/common/ErrorVector.cpp \ iva/common/Folders.cpp \ iva/common/IPV4.cpp \ iva/common/IvaOutBuffer.cpp \ iva/common/IvaOutController.cpp \ iva/common/IvaOutLogFile.cpp \ iva/common/IvaOutStream.cpp \ iva/common/IvaPixFmt.cpp \ iva/common/IvaPixFmt_linux.cpp \ iva/common/IvaString.cpp \ iva/common/IvaTime.cpp \ iva/common/IvaVideoFrame.cpp \ iva/common/Location.cpp \ iva/common/LogData.cpp \ iva/common/SysInfo_linux.cpp include $(BUILD_SHARED_LIBRARY) #end of common module #queue module include $(CLEAR_VARS) LOCAL_MODULE := queue LOCAL_SHARED_LIBRARIES := thread common LOCAL_C_INCLUDES := $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/ffmpeg LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_SRC_FILES := iva/queue/queue.cpp \ iva/queue/QueueBuffer.cpp \ iva/queue/QueueDiscard.cpp \ iva/queue/QueueDiscardPolicy.cpp \ iva/queue/QueueExtraData.cpp \ iva/queue/QueueExtraDataAudio.cpp \ iva/queue/QueueExtraDataVideo.cpp include $(BUILD_SHARED_LIBRARY) #end of queue module #decode module include $(CLEAR_VARS) LOCAL_MODULE := decode LOCAL_SHARED_LIBRARIES := thread common queue LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/iva/queue \ $(LOCAL_PATH)/iva/decode \ $(LOCAL_PATH)/ffmpeg LOCAL_LDLIBS += -L$(FFMPEG_PREBUILT_PATH) -lavcodec -lavutil -lswscale LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_SRC_FILES := iva/decode/Decode.cpp \ iva/decode/DecodeAudio.cpp \ iva/decode/DecodeVideo.cpp include $(BUILD_SHARED_LIBRARY) #end of decode module #encode module include $(CLEAR_VARS) LOCAL_MODULE := encode LOCAL_SHARED_LIBRARIES := thread common queue LOCAL_LDLIBS += -L$(FFMPEG_PREBUILT_PATH) -lavcodec -lavutil -lswscale -lavformat LOCAL_C_INCLUDES := \ $(LOCAL_PATH)/iva/thread \ $(LOCAL_PATH)/iva/common \ $(LOCAL_PATH)/iva/queue \ $(LOCAL_PATH)/iva/encode \ $(LOCAL_PATH)/ffmpeg LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS LOCAL_SRC_FILES := iva/encode/Encode.cpp \ iva/encode/EncodeAudio.cpp \ iva/encode/EncodeAudioParams.cpp \ iva/encode/EncodeVideo.cpp \ iva/encode/EncodeVideoParams.cpp \ iva/encode/VideoLoader.cpp include $(BUILD_SHARED_LIBRARY) #end of encode module

当我试图使用androidndk构建我的项目时，它给出了以下错误

/home/iamharsh/adt-bundle-linux-x86_64-20130717/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lavcodec
/home/iamharsh/adt-bundle-linux-x86_64-20130717/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lavutil
/home/iamharsh/adt-bundle-linux-x86_64-20130717/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/common/iva/common/IvaVideoFrame.o: in function IvaVideoFrame::freeInternalData():jni/iva/common/IvaVideoFrame.cpp:19: error: undefined reference to 'avpicture_free'
/home/iamharsh/adt-bundle-linux-x86_64-20130717/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/common/iva/common/IvaVideoFrame.o: in function IvaVideoFrame::freeInternalData():jni/iva/common/IvaVideoFrame.cpp:20: error: undefined reference to 'av_free'
collect2: ld returned 1 exit status
make: *** [obj/local/armeabi/libcommon.so] Error 1

---

av_free和avpicture_free函数存在于不同目录的不同头文件中。因此，我尝试使用相对路径导入它们，但仍然没有效果。任何帮助或建议都将不胜感激。

FFMPEG_prebuilded_PATH是否是libavcodec和libavutil的正确位置？链接器正在寻找的函数应该在这些库中，所以我认为是找不到它们的事实造成了问题。你真的为android构建了avcodec和avutil吗？您是否将它们构建为静态库或动态库？是的，我已经构建了它们并将它们用作静态库