我正在尝试将 XMP 工具包移植到 android 设备上。我能够成功构建 xmpcore，并拥有一个 libXMPCore.so。当我尝试使用 ndk-build 制作 libXMPFile.so 时，我遇到了几个我不明白的问题。
1）似乎 libXMPFile.so 依赖于 libXMPCore.so。我设法在 libXMPFiles 的 Android.mk 中包含 libXMPCore.so。我的 Android.mk 看起来像这样：
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
# Include all cpp file
LOCAL_SRC_FILES := \
../source/WXMPFiles.cpp \
../source/XMPFiles.cpp \
../source/XMPFiles_Impl.cpp \
../../source/XMP_LibUtils.cpp \
../../source/UnicodeConversions.cpp \
../../source/XML_Node.cpp \
../../third-party/zuid/interfaces/MD5.cpp \
../source/FileHandlers/ASF_Handler.cpp \
../source/FileHandlers/AVCHD_Handler.cpp \
../source/FileHandlers/RIFF_Handler.cpp \
../source/FileHandlers/Basic_Handler.cpp \
../source/FileHandlers/FLV_Handler.cpp \
../source/FileHandlers/InDesign_Handler.cpp \
../source/FileHandlers/JPEG_Handler.cpp \
../source/FileHandlers/MP3_Handler.cpp \
../source/FileHandlers/MPEG2_Handler.cpp \
../source/FileHandlers/MPEG4_Handler.cpp \
../source/FileHandlers/P2_Handler.cpp \
../source/FileHandlers/PNG_Handler.cpp \
../source/FileHandlers/PostScript_Handler.cpp \
../source/FileHandlers/PSD_Handler.cpp \
../source/FileHandlers/Scanner_Handler.cpp \
../source/FileHandlers/SonyHDV_Handler.cpp \
../source/FileHandlers/SWF_Handler.cpp \
../source/FileHandlers/TIFF_Handler.cpp \
../source/FileHandlers/Trivial_Handler.cpp \
../source/FileHandlers/UCF_Handler.cpp \
../source/FileHandlers/XDCAM_Handler.cpp \
../source/FileHandlers/XDCAMEX_Handler.cpp \
../source/FormatSupport/ASF_Support.cpp \
../source/FormatSupport/IPTC_Support.cpp \
../source/FormatSupport/MOOV_Support.cpp \
../source/FormatSupport/ISOBaseMedia_Support.cpp \
../source/FormatSupport/PNG_Support.cpp \
../source/FormatSupport/PSIR_FileWriter.cpp \
../source/FormatSupport/PSIR_MemoryReader.cpp \
../source/FormatSupport/QuickTime_Support.cpp \
../source/FormatSupport/Reconcile_Impl.cpp \
../source/FormatSupport/ReconcileIPTC.cpp \
../source/FormatSupport/ReconcileLegacy.cpp \
../source/FormatSupport/ReconcileTIFF.cpp \
../source/FormatSupport/RIFF.cpp \
../source/FormatSupport/RIFF_Support.cpp \
../source/FormatSupport/SWF_Support.cpp \
../source/FormatSupport/TIFF_FileWriter.cpp \
../source/FormatSupport/TIFF_MemoryReader.cpp \
../source/FormatSupport/TIFF_Support.cpp \
../source/FormatSupport/XDCAM_Support.cpp \
../source/FormatSupport/XMPScanner.cpp \
../source/HandlerRegistry.cpp \
../source/FileHandlers/AIFF_Handler.cpp \
../source/FileHandlers/WAVE_Handler.cpp \
../source/FormatSupport/ID3_Support.cpp \
../source/FormatSupport/AIFF/AIFFBehavior.cpp \
../source/FormatSupport/AIFF/AIFFMetadata.cpp \
../source/FormatSupport/AIFF/AIFFReconcile.cpp \
../source/FormatSupport/IFF/Chunk.cpp \
../source/FormatSupport/IFF/ChunkController.cpp\
../source/FormatSupport/IFF/ChunkPath.cpp \
../source/FormatSupport/IFF/IChunkBehavior.cpp \
../source/FormatSupport/WAVE/BEXTMetadata.cpp \
../source/FormatSupport/WAVE/CartMetadata.cpp \
../source/FormatSupport/WAVE/Cr8rMetadata.cpp \
../source/FormatSupport/WAVE/DISPMetadata.cpp \
../source/FormatSupport/WAVE/INFOMetadata.cpp \
../source/FormatSupport/WAVE/PrmLMetadata.cpp \
../source/FormatSupport/WAVE/WAVEBehavior.cpp \
../source/FormatSupport/WAVE/WAVEReconcile.cpp \
../source/NativeMetadataSupport/IMetadata.cpp \
../source/NativeMetadataSupport/IReconcile.cpp \
../source/NativeMetadataSupport/MetadataSet.cpp \
../source/PluginHandler/FileHandlerInstance.cpp \
../source/PluginHandler/HostAPIImpl.cpp \
../source/PluginHandler/Module.cpp \
../source/PluginHandler/OS_Utils_Linux.cpp \
../source/PluginHandler/PluginManager.cpp \
../source/PluginHandler/XMPAtoms.cpp \
../../source/Host_IO-UNIX.cpp \
../../source/XIO.cpp \
../../source/XMPFiles_IO.cpp \
../public/include/client-glue\TXMPMeta.incl_cpp
LOCAL_CPPFLAGS := -std=c++0x
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../../../../../../android-ndk-r8e/sources/cxx- stl/gnu-libstdc++/4.6/libs/x86/include
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../../../../../../android-ndk-r8e/sources/cxx- stl/gnu-libstdc++/4.6/include
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../../../../../../
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../source
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../source
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../..
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../public/include
LOCAL_C_INCLUDES += $(LOCAL_PATH)/../../XMPFilesPlugins/api/source
LOCAL_LDLIBS := $(LOCAL_PATH)/../obj/local/armeabi-v7a/libXMPCore.so
LOCAL_MODULE := xmpfile
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)
但是，当我尝试运行 ndk-build 时，它会抱怨链接错误，例如： WXMPFiles.o: in function WXMPFiles_GetXMP_1:/home/w18656/workspace/xline2/main-jb-qcpro-4.2-xline/motorola/hal/ispbypass /xmp/XMP-Toolkit-SDK-CS6/XMPFiles/jni/../source/WXMPFiles.cpp:288: 错误: 未定义引用'TXMPMeta, std::allocator > >::TXMPMeta( XMPMeta *)'
对于 TXMPMeta 类的实现，我很困惑。似乎定义在 TXMPMeta.hpp 中，并且在 client-glue/TXMPMeta.incl_cpp 中实现类。
但是，我检查了 XMPFiles.mak，TXMPMeta.incl_cpp 不是我们编译的文件之一。我们如何编译类 TXMPMeta 的实现？（与其他 TXMPxxx.incl_cpp 相同的问题）
我正在使用 8e android NDK，并尝试为 XMPCore 和 XMPFiles 构建本机共享库。
感谢你的帮助。