Tutorial ndk-build error

[feral]

I'm trying to test Android Gstreamer. So I installed and configured path SDK, got tutorial source, modify path in tutorial's Android.mk, and do ndk-build at android-tutorial-1/jni. But I got

$ ndk-build
GStreamer      : [GEN] => gst-build-arm64-v8a/gstreamer_android.c
GStreamer      : [COMPILE] => gst-build-arm64-v8a/gstreamer_android.c
GStreamer      : [LINK] => gst-build-arm64-v8a/libgstreamer_android.so
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/gstreamer-1.0/static/libgstcoreelements.a(libgstcoreelements_la-gstelements.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gst.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstobject.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstallocator.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstbin.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstbuffer.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstbufferlist.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstbufferpool.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstbus.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstcaps.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstcapsfeatures.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstchildproxy.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstclock.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstclock-linreg.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstcontext.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstcontrolbinding.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstcontrolsource.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstdatetime.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstdebugutils.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstdevice.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstdevicemonitor.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libgstreamer-1.0.a(libgstreamer_1.0_la-gstdeviceprovider.o): incompatible target
...
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libglib-2.0.a(libglib_2_0_la-gstring.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libglib-2.0.a(libglib_2_0_la-gthread.o): incompatible target
/home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold: error: /home/potato/Android/GST/lib/libglib-2.0.a(libglib_2_0_la-gutf8.o): incompatible target
gst-build-arm64-v8a/gstreamer_android.c:27: error: undefined reference to 'gst_plugin_coreelements_register'
gst-build-arm64-v8a/gstreamer_android.c:70: error: undefined reference to 'g_utf8_get_char_validated'
gst-build-arm64-v8a/gstreamer_android.c:79: error: undefined reference to 'g_strdup_printf'
gst-build-arm64-v8a/gstreamer_android.c:80: error: undefined reference to 'g_string_erase'
gst-build-arm64-v8a/gstreamer_android.c:81: error: undefined reference to 'g_string_insert'
gst-build-arm64-v8a/gstreamer_android.c:85: error: undefined reference to 'g_free'
gst-build-arm64-v8a/gstreamer_android.c:103: error: undefined reference to 'g_strdup_printf'
...
gst-build-arm64-v8a/gstreamer_android.c:540: error: undefined reference to 'g_module_open'
gst-build-arm64-v8a/gstreamer_android.c:544: error: undefined reference to 'g_module_symbol'
gst-build-arm64-v8a/gstreamer_android.c:548: error: undefined reference to 'g_module_close'
collect2: error: ld returned 1 exit status
/home/potato/Android/GST/share/gst-android/ndk-build/gstreamer-1.0.mk:229: recipe for target 'buildsharedlibrary_arm64-v8a' failed
make: *** [buildsharedlibrary_arm64-v8a] Error 1

[Sebastian Dröge-3]

On Mo, 2016-07-25 at 18:27 -0700, feral wrote:

> I'm trying to test Android Gstreamer. So I installed and configured path  SDK
> > <https://gstreamer.freedesktop.org/data/pkg/android/1.8.1/>  , got  tutorial
> source
> <http://docs.gstreamer.com/display/GstSDK/Installing+for+Android+development> 
> , modify path in tutorial's Android.mk, and do ndk-build at
> android-tutorial-1/jni. But I got
>
> $ ndk-build
> GStreamer      : [GEN] => gst-build-arm64-v8a/gstreamer_android.c
> GStreamer      : [COMPILE] => gst-build-arm64-v8a/gstreamer_android.c
> GStreamer      : [LINK] => gst-build-arm64-v8a/libgstreamer_android.so
> /home/potato/Android/NDK/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin/ld.gold:
> error:
> /home/potato/Android/GST/lib/gstreamer-1.0/static/libgstcoreelements.a(libgstcoreelements_la-gstelements.o):
> incompatible target

This suggests that you use the GStreamer binaries for the wrong
architecture when building for arm64. Check that the Android.mk (or the
environment variables used there) are pointing to the directory with
the correct version of the binaries.

--
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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[feral]

Hello sir, thanks to answer my question.

"Android.mk"

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := tutorial-4
LOCAL_SRC_FILES := tutorial-4.c
LOCAL_SHARED_LIBRARIES := gstreamer_android
LOCAL_LDLIBS := -llog -landroid
include $(BUILD_SHARED_LIBRARY)

ifndef GSTREAMER_SDK_ROOT
ifndef GSTREAMER_ROOT
$(error GSTREAMER_ROOT is not defined!)
endif
GSTREAMER_SDK_ROOT        := $(GSTREAMER_ROOT)
endif
GSTREAMER_NDK_BUILD_PATH  := $(GSTREAMER_SDK_ROOT)/share/gst-android/ndk-build
include $(GSTREAMER_NDK_BUILD_PATH)/plugins.mk

GSTREAMER_PLUGINS         := $(GSTREAMER_PLUGINS_CORE) $(GSTREAMER_PLUGINS_PLAYBACK) $(GSTREAMER_PLUGINS_CODECS) $(GSTREAMER_PLUGINS_NET) $(GSTREAMER_PLUGINS_SYS) $(GSTREAMER_PLUGINS_CODECS_RESTRICTED)
GSTREAMER_EXTRA_DEPS      :=  gstreamer-video-1.0
include $(GSTREAMER_NDK_BUILD_PATH)/gstreamer-1.0.mk

--
What should I check in that??