[英]undefined references linking a pre-built shared library in Android with NDK
我有一個預構建的共享庫,名為“tshark.so”,每當我構建另一個共享庫(libwireshark_helper.so)時,我都試圖鏈接它。 libtshark.so在$(LOCAL_PATH)中。 這是我的Android.mk
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
NDK_MODULE_PATH := $(LOCAL_PATH)
LOCAL_SRC_FILES:= wireshark_helper.c
LOCAL_MODULE := libwireshark_helper
LOCAL_PREBUILT_LIBS := libtshark.so
LOCAL_C_INCLUDES += jni/libusb-compat/libusb jni/wispy jni/libpcap jni/libwireshark jni/libglib jni/libglib/glib jni/libglib/android jni/libwireshark/epan jni/libwireshark/epan/dissectors
LOCAL_SHARED_LIBRARIES := libc libusb libusb-compat libwispy libpcap libglib-2.0 libgmodule-2.0 libnl libtshark
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -L$(LOCAL_PATH) -llog -ltshark -lgcc -lz
include $(BUILD_SHARED_LIBRARY)
例如,'tshark'庫包含方法'tshark_log_handler',如下所示:
$ arm-eabi-nm libtshark.so | grep tshark_log_handler
005d298c t tshark_log_handler
但是,當我嘗試構建時,我收到錯誤:
SharedLibrary : libwireshark_helper.so
/Users/gnychis/Documents/android-ndk-r5b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86/bin/arm-linux-androideabi-g++ -Wl,-soname,libwireshark_helper.so -shared --sysroot=/Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/objs-debug/wireshark_helper/wireshark_helper.o /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libusb.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libusb-compat.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libwispy.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libpcap.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libglib-2.0.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libgmodule-2.0.so /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libnl.so /Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib/libc.so /Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib/libstdc++.so /Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib/libm.so -Wl,--no-undefined -Wl,-z,noexecstack -L/Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib -L/Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib -L/Users/gnychis/Documents/workspace/CoexiSyst/jni/libwireshark -llog -ltshark -lgcc -lz -Wl,-rpath-link=/Users/gnychis/Documents/android-ndk-r5b/platforms/android-9/arch-arm/usr/lib -lsupc++ -o /Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/libwireshark_helper.so
/Users/gnychis/Documents/workspace/CoexiSyst/obj/local/armeabi/objs-debug/wireshark_helper/wireshark_helper.o: In function `Java_com_gnychis_coexisyst_CoexiSyst_wiresharkHello':
/Users/gnychis/Documents/workspace/CoexiSyst/jni/libwireshark/wireshark_helper.c:124: undefined reference to `tshark_log_handler'
我為什么要獲得未定義的引用? 它在我的共享庫中,並且在我的gcc命令中有一個“-ltshark”。 我沒有得到它找不到這個庫的錯誤。
nm
的符號類型“t”表示符號位於庫中,但不是全局符號。 全局函數顯示為符號類型“T”。 換句話說,該函數是使用“static”關鍵字聲明的,您不能在代碼中使用它。
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