Question

我看到一些设备的崩溃报告（所有arm64 acrhitecture）看起来像这样：

Fatal Exception: java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "_ZNK6TagLib4File10propertiesEv" referenced by "/data/app/com.app.my/lib/arm64/libtaglib-wrapper.so"...
       at java.lang.Runtime.loadLibrary(Runtime.java:372)
       at java.lang.System.loadLibrary(System.java:988)
       at helpers.TagReaderService.(SourceFile)

受影响的操作系统版本为5.1。由于我读错了同一个问题（但与系统依赖关系相关），因为错误的APP_PLATFORM，我再次检查它是否正确，实际上我定位android-16。

我应该提一下，该符号在另一个共享库taglib.so中声明，然后链接到第二个taglib-wrapper.so。

我还执行了objdump两者 taglib.so：

0000000000140590 g    DF .text  000000000000004c  Base        TagLib::File::properties() const

和taglib-wrapper.so：

0000000000000000      DF *UND*  0000000000000000              TagLib::File::properties() const

因此符号会正确传播到taglib-wrapper.so库。我个人使用arm64设备并没有问题。我还检查了Application.mk没有被忽略添加随机字符并执行Gradle构建。在gradle.build文件中没有相关的NDK-config代码。

您可以在Git repo上提交cpp代码。

Application.mk

APP_STL := c++_shared
APP_ABI := arm64-v8a x86 armeabi-v7a
APP_PLATFORM := android-16
APP_CPPFLAGS += -frtti -fexceptions

Android.mk

LOCAL_PATH:= $(call my-dir)

# ======= TagLib engine ============================

include $(CLEAR_VARS)

LOCAL_MODULE := taglib
LOCAL_C_INCLUDES := $(LOCAL_PATH)/taglib \
                    $(LOCAL_PATH)/taglib/ape \
                    $(LOCAL_PATH)/taglib/asf \
                    $(LOCAL_PATH)/taglib/dsf \
                    $(LOCAL_PATH)/taglib/ebml \
                    $(LOCAL_PATH)/taglib/ebml/matroska \
                    $(LOCAL_PATH)/taglib/flac \
                    $(LOCAL_PATH)/taglib/it \
                    $(LOCAL_PATH)/taglib/mod \
                    $(LOCAL_PATH)/taglib/mp4 \
                    $(LOCAL_PATH)/taglib/mpc \
                    $(LOCAL_PATH)/taglib/mpeg \
                    $(LOCAL_PATH)/taglib/mpeg/id3v1 \
                    $(LOCAL_PATH)/taglib/mpeg/id3v2 \
                    $(LOCAL_PATH)/taglib/mpeg/id3v2/frames \
                    $(LOCAL_PATH)/taglib/ogg \
                    $(LOCAL_PATH)/taglib/ogg/flac \
                    $(LOCAL_PATH)/taglib/ogg/opus \
                    $(LOCAL_PATH)/taglib/ogg/speex \
                    $(LOCAL_PATH)/taglib/ogg/vorbis \
                    $(LOCAL_PATH)/taglib/riff \
                    $(LOCAL_PATH)/taglib/riff/aiff \
                    $(LOCAL_PATH)/taglib/riff/wav \
                    $(LOCAL_PATH)/taglib/s3m \
                    $(LOCAL_PATH)/taglib/toolkit \
                    $(LOCAL_PATH)/taglib/trueaudio \
                    $(LOCAL_PATH)/taglib/wavpack \
                    $(LOCAL_PATH)/taglib/xm
FILE_LIST := $(wildcard $(LOCAL_PATH)/taglib/*.cpp)
FILE_LIST += $(wildcard $(LOCAL_PATH)/taglib/**/*.cpp)
FILE_LIST += $(wildcard $(LOCAL_PATH)/taglib/**/**/*.cpp)
FILE_LIST += $(wildcard $(LOCAL_PATH)/taglib/**/**/**/*.cpp)
LOCAL_SRC_FILES := $(FILE_LIST:$(LOCAL_PATH)/%=%)
LOCAL_EXPORT_LDLIBS := -llog

include $(BUILD_SHARED_LIBRARY)

# ======= TagLib wrapper ===========================

include $(CLEAR_VARS)

LOCAL_MODULE := taglib-wrapper
LOCAL_C_INCLUDES := $(LOCAL_PATH)/taglib \
                    $(LOCAL_PATH)/taglib/ape \
                    $(LOCAL_PATH)/taglib/asf \
                    $(LOCAL_PATH)/taglib/dsf \
                    $(LOCAL_PATH)/taglib/ebml \
                    $(LOCAL_PATH)/taglib/ebml/matroska \
                    $(LOCAL_PATH)/taglib/flac \
                    $(LOCAL_PATH)/taglib/it \
                    $(LOCAL_PATH)/taglib/mod \
                    $(LOCAL_PATH)/taglib/mp4 \
                    $(LOCAL_PATH)/taglib/mpc \
                    $(LOCAL_PATH)/taglib/mpeg \
                    $(LOCAL_PATH)/taglib/mpeg/id3v1 \
                    $(LOCAL_PATH)/taglib/mpeg/id3v2 \
                    $(LOCAL_PATH)/taglib/mpeg/id3v2/frames \
                    $(LOCAL_PATH)/taglib/ogg \
                    $(LOCAL_PATH)/taglib/ogg/flac \
                    $(LOCAL_PATH)/taglib/ogg/opus \
                    $(LOCAL_PATH)/taglib/ogg/speex \
                    $(LOCAL_PATH)/taglib/ogg/vorbis \
                    $(LOCAL_PATH)/taglib/riff \
                    $(LOCAL_PATH)/taglib/riff/aiff \
                    $(LOCAL_PATH)/taglib/riff/wav \
                    $(LOCAL_PATH)/taglib/s3m \
                    $(LOCAL_PATH)/taglib/toolkit \
                    $(LOCAL_PATH)/taglib/trueaudio \
                    $(LOCAL_PATH)/taglib/wavpack \
                    $(LOCAL_PATH)/taglib/xm
LOCAL_SRC_FILES := taglib.cpp
LOCAL_LDLIBS := -llog
LOCAL_SHARED_LIBRARIES := taglib

include $(BUILD_SHARED_LIBRARY)

更新我在一个独特的共享库中合并了这两个库。现在，同一台设备（魅族MX4）在该库的第一次JNI调用时崩溃：

java.lang.UnsatisfiedLinkError: No implementation found for void helpers.IOWrapper.initialize() (tried Java_helpers_IOWrapper_initialize and Java_helpers_IOWrapper_initialize__) at helpers.IOWrapper.initialize(Native Method) at helpers.IOWrapper.read(SourceFile:136) at helpers.IOWrapper.read(SourceFile:123) at helpers.TagReaderService$a.run(SourceFile:58) at java.lang.Thread.run(Thread.java:818)

它有可能是唯一崩溃的设备吗？我正在加载库，因为静态声明是同一个Java类。我使用extern C声明来包装cpp文件。也许是因为我错过了JNIEXPORT和JNICALL？

java.lang.UnsatisfiedLinkError：无法从依赖共享库中找到符号

0 个答案: