Question

我目前遇到的问题与呈现in this question相同，只是我使用2.4版本代替2.3.1。

我已将原生活动（从ndk样本）转换为c ++并修改了android.mk和application.mk。

我有同样的错误（使用~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 and OPENCV_LIB_TYPE:=STATIC（这很奇怪，因为我有一个原生openCV的其他项目，不需要两行）。

但它仍无效。

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

我错过了什么吗？

Answer 1

尝试替换

LOCAL_LDLIBS    := -llog -landroid -lEGL -lGLESv1_CM

与

LOCAL_LDLIBS    += -llog -landroid -lEGL -lGLESv1_CM

Answer 2

虽然这是一个老问题，但我遇到了同样的问题并通过添加

来修复它

LOCAL_LDLIBS    += -lz # Compression library

到我的Android.mk

Answer 3

我结束了尝试使用原生等离子项目（通过在位图中写入来完成显示）并且效果很好。

可能 GLES 正在搞乱 OpenCV。我认为这两个项目之间没有任何其他区别。

在某种程度上问题得到了解决。尽管如此，如果有人遇到同样的问题并解决了它，我会有兴趣了解是什么导致它以及如何解决它。

OpenCV2.4与Android Native Activity

3 个答案: