Android openCV Sample Error: cannot find the -lopencv_java

Question

I'm just follow the tutorial to setup the android opencv and try to run the sample of face-detection.

But it had the errors as shown: error msg

I had google around but still can't find the solution. Any idea how to solve it? I'm using ndk-r10, elipse juno 4.2, & opencv android 2.4.9

ph0b · Accepted Answer · 2014-07-24 08:06:51Z

1

which ndk-r10 are you using ? The one for 32-bit target, 64-bit target, or both ?

From your error I see a reference to arm64-v8a which is a 64-bit target, but the OpenCV SDK is only precompiled for armeabi, armeabi-v7a, mips and x86.

If you want to compile your project for 64-bit Android targets, you'll need to recompile OpenCV first but I don't know if it's already supported yet.

answered Jul 24, 2014 at 8:06

ph0b

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2 Comments

user2301281 Over a year ago

I use the "android-ndk64-r10-windows-x86_64.zip" which is Windows 64-bit target. After that I try to use the "android-ndk-r9-windows-x86_64.zip" and this shown another error.

ph0b Over a year ago

And for what target do you want to compile ? To restrict compilation to 32-bit targets for those OpenCV is already compiled, you can set APP_ABI := all32 inside Application.mk

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