带有NDK的Android Studio:链接错误:对"stderr"的未定义引用 [英] Android Studio with NDK : link error : undefined reference to 'stderr'

问题描述

我已经针对Android armeabi-v7a编译了OpenCV静态库.

I've compiled OpenCV static libraries targeting android armeabi-v7a.

现在，我正尝试通过Android Studio中的CMakeLists.txt文件将本机C ++代码与这些库链接，但这会失败，并出现以下奇怪错误:

Now I'm trying to link my native C++ code with those libraries through a CMakeLists.txt file in Android Studio but this fails with this weird error :

~/opencv/modules/videoio/src/container_avi.cpp:0: error: undefined reference to 'stderr'

此代码来自libopencv_videoio.a

This code comes from the libopencv_videoio.a

CMakeLists.txt文件最有趣的部分是这个

The interresting part of the CMakeLists.txt file is this

# linking with static libraries
target_link_libraries(native-lib
     dnn ml objdetect shape stitching superres videostab calib3d features2d highgui videoio imgcodecs video photo imgproc flann core
)

不是应该自动查找标准库吗?

Isn't it supposed to find standard libraries automatically ?

以下是我的Application.mk

EDIT 1: Following is my Application.mk

...
NDK_TOOLCHAIN_VERSION := clang
APP_PLATFORM := android-21
APP_STL := c++_shared
...

NDK版本取自Changelog.md:r17b

NDK version taken from Changelog.md : r17b

如丹所建议，我已添加

-DANDROID_PLATFORM = android-24"

"-DANDROID_PLATFORM=android-24"

cmake参数

推荐答案

最可能的情况是您为android-23 +构建了opencv，但native-lib在其下有一个minSdkVersion.请参见 https://android.googlesource.com/platform/ndk/+/master/docs/user/common_problems.md#using-mismatched-prebuilt-libraries .

The most likely scenario is that you built opencv for android-23+ but native-lib has a minSdkVersion below that. See https://android.googlesource.com/platform/ndk/+/master/docs/user/common_problems.md#using-mismatched-prebuilt-libraries.

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