GStreamer binaries you're using (f.ex., r18b for 1.16.x)
#Android ndk eclipse mac os x#
The development machine can either be a Linux, Mac OS X or Windows, and The development machine is where you will develop your AndroidĪpplication, which then you will deploy on the target machine, which Now any shared lib that uses libC will not miss these symbols.All versions starting from 2.3.1 Gingerbread are supported Prerequisites You can make the next step, and have this all bundled with libC: LOCAL_EXPORT_LDFLAGS += -Wl,-u'extBa' -Wl,-u'extBb' -Wl,-u'extBc' What you need now, add LOCAL_LDFLAGS += -Wl,-u'extBa' -Wl,-u'extBb' -Wl,-u'extBc' Let's say these symbols are extBa, extBb, and extBc ( in the above scenario, I believe that some object of libC does not find these symbols that are defined somewhere in libB, that's why the link fails).
When this fails with unresolved symbols, copy all these symbols to clipboard, and paste them your Android.mk. First, try to build your shared library the usual way. There exists an alternative approach, which does not use 'recursive' linking. If the libraries that are involved are not prebuilt, you don't need to guess their location (which may be especially tricky when using Android Studio NDK integration). external -Wl,-start-group -l B -l C -Wl,-end-group external/ -l B -l C -l BĪlternatively, you can use LOCAL_LDLIBS += -L. Or add space after -l to outsmart the NDK protection: LOCAL_LDLIBS := -L. This is just a warning, so you can ignore it. Try using LOCAL_STATIC_LIBRARIESĪndroid NDK: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
#Android ndk eclipse update#
Update (2017): since 2012, the rules of NDK became more strict, and now it will complain that LOCAL_LDLIBS contains non-system libraries:Īndroid NDK: WARNING:Android.module: non-system libraries in linker flags: -la -lbĪndroid NDK: This is likely to result in incorrect builds. I took the two-libs NDK sample, and made minimal change to demonstrate the technique on GitHub.
#Android ndk eclipse how to#
The answer can be found in How to deal with recursive dependencies between static libraries using the binutils linker?. You'll still need to add the location of the headers for the library into the variable LOCAL_C_INCLUDES in the module that requires it. Note: This does not solve problems with required headers. Then when you do ndk-build, it will copy this library into libs/armeabi/ before building the module, and you're good to go. However, you'll need to do this before the module that requires this library.įor linking, you'll need to add the following into the module section that links to the prebuilt library. In the NDK docs, it is recommended that this be done at the end of the Android.mk, rather than the middle: include $(LOCAL_PATH)/libs/Android.mk Next, you just need to include the above file into your jni/Android.mk to get things to work. You can create a section for each prebuilt library, all placed in jni/libs.
Then, just create a jni/libs/Android.mk file: LOCAL_PATH := $(call my-dir) The NDK allows for linking with prebuilt user libraries, using the PREBUILT_SHARED_LIBRARY variable.Īssuming that the library you need to link is librandom.so, create a libs folder in jni subfolder of the project folder: mkdir -p jni/libs
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