Question about AndroidJNI sample

[redpearl]

In the sample AndroidJNI (ogre/Samples/AndroidJNI), there is a MainActivity.java. I tried to build it in Android Studio. However, it cannot find libOgreJNI.so when executed. How can I generate this so file?

I can build and run the other Android sample (SampleBrowserNDK). But that one is a pure native one using NativeActivity. I would like to use the "traditional" Android way like what AndroidJNI is doing.

[paroj]

did you build the Java Component? If so it should have generated an according android project in ${CMAKE_BINARY_DIR}/OgreJNI,

[redpearl]

Yes. I have enabled Java component, and it generated lots of Java files. I packed them into a Jar file and used it in Android Studio. But there is no so file generated. How can I generate libOgreJNI.so?

[paroj]

should be in ${CMAKE_BINARY_DIR}/OgreJNI/libs

[redpearl]

There is a folder named "OgreJNI/libs/armeabi-v7a", but it is empty.

How can I generate the so file. Can you post more detailed command line or a link? Thanks!

[redpearl]

i think I know why the so file is not generated. When I run "make OgreJNI", i got a link error saying
"ld: fatal error: -soname: must take a non-empty argument"

I see Components/Java/CMakeLists.txt has a line at the end as:

set_target_properties(${SWIG_MODULE_OgreJNI_REAL_NAME} PROPERTIES NO_SONAME OFF) # workaround for SWIG/ android interop

However, this line does not work.

[redpearl]

More search online, I realized that this "NO_SONAME" tricks works until cmake 3.3 and is ignored from cmake 3.4. Since I am using cmake 3.8, it does not work at all.

Someone suggest to replace the deprecated swig_add_module to swig_add_library. I tried to replace the line:
"swig_add_module(OgreJNI java ${SWIG_INPUT_MODULES})" with
"swig_add_library(OgreJNI LANGUAGE java SOURCES ${SWIG_INPUT_MODULES})"

However, I still get the same error when build OgreJNI. Can anyone guide how to fix it?

BTW: I found that Ogre used extremely old stuffs for Android. I have to manually download a very old version of SDK tools to make the "android" command works. Please make it suitable for the latest Android tools, particularly, Android Studio with gridle.

[paroj]

BTW: I found that Ogre used extremely old stuffs for Android. I have to manually download a very old version of SDK tools to make the "android" command works. Please make it suitable for the latest Android tools, particularly, Android Studio with gridle.

yes, viewtopic.php?f=21&t=93782#p540045

[redpearl]

Is there any way to generate the so file with cmake 3.8? The NO_SONAME trick failed for cmake 3.3+.

[redpearl]

I finally generated the so file using the most straightforward method -- replacing my cmake to 3.2 version.

However, it would be really nice to modify Ogre itself making it working for latest tools (cmake, NDK, etc.). Otherwise, many people will soon met the same errors and complain about it.

[paroj]

this should allow using CMake 3.2+