6
我在我的Android應用程序中通過JNI使用OpenCV。 libopencv_java.so太大，大約7M。顯然，我只需要幾個庫。 我檢查OpenCV4Android中的庫，找出一些靜態庫，如libopencv_core.a 這裏是我在Android.mk中的新代碼，以包含必要的OpenCV庫。而我包括libopencv_core.a，libopencv_highgui.a，libopencv_imgproc.a，以及一些第三方庫，它們是：liblibjasper.a，liblibjpeg.a，liblibpng.a，liblibtiff.a如何在Android中只包含必要的OpenCV庫？
include $(CLEAR_VARS)
LOCAL_MODULE := libopencv_highgui_prebuilt
LOCAL_SRC_FILES := libopencv_highgui.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := libopencv_imgproc_prebuilt
LOCAL_SRC_FILES := libopencv_imgproc.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := libopencv_core_prebuilt
LOCAL_SRC_FILES := libopencv_core.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := liblibjpeg_prebuilt
LOCAL_SRC_FILES := liblibjpeg.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := liblibpng_prebuilt
LOCAL_SRC_FILES := liblibpng.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := liblibtiff_prebuilt
LOCAL_SRC_FILES := liblibtiff.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := liblibjasper_prebuilt
LOCAL_SRC_FILES := liblibjasper.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/OpenCV242AndroidSDKNativeJNI/include
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := native_jni
LOCAL_SRC_FILES := jni_part.cpp
LOCAL_CFLAGS += -fpermissive
LOCAL_STATIC_LIBRARIES += libopencv_highgui_prebuilt
LOCAL_STATIC_LIBRARIES += libopencv_imgproc_prebuilt
LOCAL_STATIC_LIBRARIES += libopencv_core_prebuilt
LOCAL_STATIC_LIBRARIES += liblibjpeg_prebuilt
LOCAL_STATIC_LIBRARIES += liblibpng_prebuilt
LOCAL_STATIC_LIBRARIES += liblibtiff_prebuilt
LOCAL_STATIC_LIBRARIES += liblibjasper_prebuilt
LOCAL_LDLIBS += -llog -ldl
LOCAL_LDLIBS += -ljnigraphics
LOCAL_LDLIBS += -lz
include $(BUILD_SHARED_LIBRARY)
但事實並非如此經過編譯。一個長的錯誤列表，所有與斷言失敗有關：
/usr/src/android-ndk-r8b/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6.x-google/../../../../arm-linux-androideabi/bin/ld: BFD (GNU Binutils) 2.21 assertion fail /usr/local/google/home/andrewhsieh/ndk-andrewhsieh/src/build/../binutils/binutils-2.21/bfd/elf32-arm.c:10190
Install : libnative_jni.so => libs/armeabi-v7a/libnative_jni.so
/usr/src/android-ndk-r8b/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6.x-google/../../../../arm-linux-androideabi/bin/ld: BFD (GNU Binutils) 2.21 assertion fail /usr/local/google/home/andrewhsieh/ndk-andrewhsieh/src/build/../binutils/binutils-2.21/bfd/elf32-arm.c:10190
我也試圖改變這些靜態庫的順序;但它不起作用。 有什麼建議嗎？