Hi all, I want to use AdrenoSDK 3.4 in Android NDK r9, it cannot work.
Windows 8 (64bits) + Android NDK r9 (64bits)
I directly compile the sample but it failed....
C:\AdrenoSDK\Development\Samples\OpenCL\ImageMedianFilter\Android\jni>ndk-build
Android NDK: WARNING:C:/AdrenoSDK/Development/Samples/OpenCL/ImageMedianFilter/Android//jni/Android.mk:ImageMedianFilter: non-system libraries in linker flags:
-lOpenCL
Android NDK: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
Android NDK: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
Android NDK: current module
SharedLibrary : libImageMedianFilter.so
How should I do?
Thank you!!!
Cathy
Hi,
Did you download the libOpenCL.so off your device? It looks like the linker can't find it. We have a note about this in the Browser at the top of the Samples -> OpenCL tab:
Let me know if this is not the issue.
Kevin
Dear Kevin,
I copy all the files under "C:\AdrenoSDK\Development\Inc"
to my "C:\android-ndk\platforms\android-14\arch-arm\usr\include"
and download libOpenCL.so (from my device) to "C:\android-ndk\platforms\android-14\arch-arm\usr\lib"
Now it works, but I have some questions:
1. I use the included files from Adreno SDK and download libOpenCL from a random device, it will occur problems?
2. If I want to let my app can run on any Android device (with OpenCL support originally). Do I need to use their libOpenCL to re-compile my app? Or, do I need to attach my libOpenCL.so?
I assume it should be a standard interface (header files), so I should not attach my libOpenCL.so or recompile my app by new driver....
3. I use LOCAL_SHARED_LIBRARIES := libOpenCL in my Android.mk, am I right?
Why I cannot use LOCAL_LDLIBS += -lOpenCL like samples?
4. Can Adreno SDK be compiled by Snapdragon LLVM Compiler?
Thank you so much!!!
Cathy
Dear all,
So sad....I found I still cannot use OpenCL......
I just can compile my code, but I have linking errors......
As I mentioned before, I copied the following libraries (libOpenCL.so, libllvm-a3xx.so, libgsl.so, libstlport.so, and libcutils.so)
from my mobile (Android + Snapdragon) to my PC folders:
C:\android-ndk\platforms\android-X\arch-arm\usr\lib, X = 18, 14, 9, 8, 5, 4, and 3
In Android.mk
If I use LOCAL_LDLIBS += -lOpenCL, it will say
If I link it by LOCAL_SHARED_LIBRARIES += libOpenCL, it will cause errors like "undefined reference to `clGetPlatformIDs'."
Does anyone can help me???? Please...
Cathy
Does anyone help me??? How to link libOpenCL.so?
Hi Cathy,
Everything appears to be correct from what you've listed, but obviously something is missing or not quite right with your build environment.
Do you have
defined in your jni/Application.mk? I'm not sure if you're using one of the SDK samples or your own application, but if you don't have this then that may be the issue. Our OpenCL samples include this line and a couple others in the makefiles that may affect system library linkage.
If that doesn't help then I would probably have to see your project environment to figure out where the problem is happening.
Kevin
Thank you Kevin,
Yes, I have added it.
My device has libOpenCL.so but it cannot run OpenCL well. And, I am waiting to take another device to try again.
Could I update my OpenCL driver of my device for myself?
Cathy