[osg-users] osgAndroid - Deploying and Debugging

[Akhtar Shamim]

Hi Rafa

Thank you for the pointer. I managed to compile and run the application in
an Android device successfully.
I have also managed to compile and run the osgAndroidExampleGLES1 on my
mobile device. I can see the blue background for the example together with
three buttons.

However, now when i try to load a model (cessna.osg) it shows error: dlopen
failed: library osgPlugins-3.4.0/osgdb_osg.so" not found.
DynamicLibrary::failed loading "osgPlugins-3.4.0/osgdb_osg.so". It is
strange because the build is static build yet it is looking for .so file.

I am not too sure why this is happening. Any pointer will be very helpful.

regards
Shamim


On Mon, Sep 28, 2015 at 5:08 PM, Rafa Gaitan <rafa.gaitan at gmail.com> wrote:

> Hi Shamim,
>
> I added glustl_shared to be loaded dynamically before loading any
> osgAndroid jni library, because linking it statically was giving a lot of
> problems.
>
> I don't recall having problems before, but I usually work on linux or mac
> when I have to develop in android and OSG. Maybe is something related to
> the r10e NDK?.
>
> Anyway, could you check if you have in your
> org.openscenegraph.android/libs/armeabi/ the library libgnustd_shared.so?,
> if not, probably you need to copy it there from the NDK.
>
> I don't recall if I copied it by myself that or it's automated somehow by
> the NDK build system. But if you have it there along the libjni-osggles*.so
> libraries it will be deployed within the apk.
>
> Regards,
> Rafa.
>
>
> El lun., 28 sept. 2015 a las 9:34, Akhtar Shamim (<shamimz at gmail.com>)
> escribió:
>
>> Hi
>>
>> Recently we had a requirement to build OSG for Android and load a
>> OpenFlight MetaFight file. This is what I did:
>>
>> - Checkout the 3.4.0 stable release of OSG
>> - Installed Android NDK, SDK and Eclipse.
>> - Used the toolchain to compile OSG for GLES1
>> - Downloaded OSGAndroid from GitHub
>> - Imported to Eclipse
>> - Build all the four projects
>>
>> So far there is no problem at all. Everything went smooth.
>>
>> However, when I am trying to deploy the osgsimple application using
>> eclipse or trying to debug the application it throws an error saying:
>>
>> "Couldn't load gnustl_shared from loader dalvik.system.PathClassLoader".
>>
>> This is what I did:
>> - Modified Android.mk to have the correct OSG_SDK path
>> - Modified Android.mk to have the correct plugins (osgPlugins-3.4.0)
>>
>> Note:
>>
>> (a) No other changes made to any files downloaded from GitHub for
>> osgAndroid.
>> (b) The command used to configure cmake is <<<
>>
>> > set ANDROID_NDK=C:\Android\android-ndk-r10e
>> > "c:\Program Files (x86)\CMake 2.8\bin\cmake.exe" .. -G"MinGW Makefiles"
>> -DANDROID_NDK=C:/Android/android-ndk-r10e
>> -DCMAKE_TOOLCHAIN_FILE=../PlatformSpecifics/Android/android.toolchain.cmake
>> -DCMAKE_MAKE_PROGRAM="%ANDROID_NDK%\prebuilt\windows-x86_64\bin\make.exe"
>> -DOPENGL_PROFILE="GLES1" -DDYNAMIC_OPENTHREADS=OFF
>> -DDYNAMIC_OPENSCENEGRAPH=OFF -DANDROID_NATIVE_API_LEVEL=15
>> -DANDROID_ABI=armeabi -DCMAKE_INSTALL_PREFIX=C:/Android/OSG_ES1-3.4.0
>>
>> > make  -j 8
>> > make install
>>
>> >>>>
>>
>> I tried the above in Windows 10.
>>
>> Any help to get this resolved will be greatly appreciated.
>>
>> regards
>> Shamim
>>
>>
>>
>>
>>
>>
>>
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>>
>
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