android - OpenCV2.4 与 Android Native Activity

Question

我目前面临与呈现的问题相同的问题 in this question , 除了我使用 2.4 版本而不是 2.3.1。

我已将 native Activity (从 ndk 样本)转换为 C++ 并修改了 android.mk 和 application.mk。

我有同样的错误(~Mat 等等)。

当我阅读问题的答案时，我意识到我需要添加 OPENCV_INSTALL_MODULES:=on 和 OPENCV_LIB_TYPE:=STATIC(这很奇怪，因为我有一个其他项目没有使用原生 openCV需要这两行)。

但是还是不行。

Android.mk 如下:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_LIB_TYPE:=STATIC
OPENCV_INSTALL_MODULES:=on

include includeOpenCV.mk

ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
    #try to load OpenCV.mk from default install location
    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
else
    include $(OPENCV_MK_PATH)
endif

LOCAL_MODULE    := native-activity
LOCAL_SRC_FILES := main.cpp engine.cpp
LOCAL_LDLIBS    := -llog -landroid -lEGL -lGLESv1_CM
LOCAL_STATIC_LIBRARIES += android_native_app_glue


include $(BUILD_SHARED_LIBRARY)

$(call import-module,android/native_app_glue)

我收到以下错误:

./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvPuts(CvFileStorage*, char const*)':
persistence.cpp:(.text._ZL7icvPutsP13CvFileStoragePKc+0x20): undefined reference to `gzputs'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvGets(CvFileStorage*, char*, int)':
persistence.cpp:(.text._ZL7icvGetsP13CvFileStoragePci+0x26): undefined reference to `gzgets'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvXMLSkipSpaces(CvFileStorage*, char*, int)':
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x1e2): undefined reference to `gzgets'
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x208): undefined reference to `gzeof'
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x33c): undefined reference to `gzeof'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `_ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3':
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x124): undefined reference to `gzgets'
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x170): undefined reference to `gzeof'
/cygdrive/d/soft/NVPACK/android-ndk-r7c/build/core/build-binary.mk:366: recipe for target `obj/local/armeabi-v7a/libnative-activity.so' failed
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x28e): undefined reference to `gzeof'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `cvReleaseFileStorage':
persistence.cpp:(.text.cvReleaseFileStorage+0x24): undefined reference to `gzclose'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `cvOpenFileStorage':
persistence.cpp:(.text.cvOpenFileStorage+0x66e): undefined reference to `gzopen'
persistence.cpp:(.text.cvOpenFileStorage+0x8fc): undefined reference to `gzclose'
persistence.cpp:(.text.cvOpenFileStorage+0xaea): undefined reference to `gzrewind'
persistence.cpp:(.text.cvOpenFileStorage+0xbee): undefined reference to `gzrewind'
persistence.cpp:(.text.cvOpenFileStorage+0xc0a): undefined reference to `gzclose'
collect2: ld returned 1 exit status
make: *** [obj/local/armeabi-v7a/libnative-activity.so] Error 1

有什么我遗漏的吗？

Answer 1

虽然这是一个老问题，但我遇到了同样的问题并通过添加修复了它

LOCAL_LDLIBS    += -lz # Compression library

到我的Android.mk