I have a simple c++ sdl project which compiles fine for linux. I need to compile it for android without changing the source code (like in qt). When I tried to compile it using documentation, I had following error:
"jni/src/../SDL/src/main/android/SDL_android_main.c:62: error: undefined reference to 'SDL_main'
collect2: error: ld returned 1 exit status".
Can anyone give me working example that can be compiled both for linux and android?
Related
I have troubles to run the GStreamer tutorials. I followed all tutorial steps, and run into an error.
My System:
android-ndk-r11c, gstreamer-sdk-android-arm-debug-2013.6
My System: Windows 10 - 64 bit
The Error:
C:\gstreamer-sdk-android-arm-debug-2013.6\share\gst-sdk\tutorials\android-tutorial-1>ndk-build
GStreamer : [GEN] => gst-build/gstreamer_android.c
GStreamer : [COMPILE] => gst-build/gstreamer_android.c
GStreamer : [LINK] => gst-build/libgstreamer_android.so
lex.priv_gst_parse_yy.c:1598: error: undefined reference to '__srget'
gutils.c:2406: error: undefined reference to 'issetugid'
localcharset.c:158: error: undefined reference to '__srget'
localcharset.c:167: error: undefined reference to '__srget'
./localcharset.c:195: error: undefined reference to '__srget'
/home/slomo/Projects/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.7/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.7/include-fixed/stdio.h:376: error: undefined reference to '__swbuf'
collect2.exe: error: ld returned 1 exit status
make: *** [buildsharedlibrary] Error 1
C:\gstreamer-sdk-android-arm-debug-2013.6\share\gst-sdk\tutorials\android-tutorial-1>
I tried:
Windows linkage problems : Due to problems related to the standard linker, Google’s Gold Linker is used to build GStreamer applications. Unfortunately, the Android NDK toolchain for Windows does not include the gold linker and the standard one has to be used.
If you observe linkage problems, you can replace the linker in your Android NDK with the gold one from this project. Download the android-ndk-r8b-ma-windows.7z file, extract \android-ndk-r8b\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe (only this file is needed) and overwrite the one in the same folder in your Android NDK installation.
No effect. Any ideas how to solve this?
I had similar problem before please give a try with ndk10b.It is always good to check in header files for __srget before move forward.
UPDATE March 19, 2016: Superpowered has released new binaries which work properly with NDK r11
I'm trying to build Superpowered library CrossExample sample project in Android Studio. Until recent NDK update it worked like charm, but now execution of ndk-build gives an error:
Error:error: undefined reference to '__page_size'
I tried building with different toolchains, removing/adding several build flags with no luck so far.
In a different project that uses Superpowered SDK and pretty much the same config I get some other error details. Part of output message log:
/android/ndk/platforms/android-9/arch-x86/usr/include/unistd.h:173: error: undefined reference to '__page_size'
/android/ndk/platforms/android-9/arch-x86/usr/include/unistd.h:173: error: undefined reference to '__page_size'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/Users/user_name/StudioProjects/project_name/app/src/main/jniSuperpowered/obj/local/x86/libNativeLibName.so] Error 1
make: *** Waiting for unfinished jobs....
/Volumes/iMect/iphone/SuperpoweredSource/decoder/SuperpoweredDecoder.cpp:120: error: undefined reference to '__page_size'
/Volumes/iMect/iphone/SuperpoweredSource/decoder/hlsreader.cpp:582: error: undefined reference to '__page_size'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/Users/user_name/StudioProjects/project_name/app/src/main/jniSuperpowered/obj/local/armeabi-v7a/libNightcorizerSuperpowered.so] Error 1
FAILURE: Build failed with an exception.
What looks not right is undefined reference to __page_size in unistd.h . However I've got very little idea of further troubleshooting.
Thanks ahead for any help/suggestions!
The changes made in this NDK commit seem to explain the issue you're seeing. According to the commit description, __page_size was replaced with PAGE_SIZE for Android API levels 12 and under. As you're using API level 9 and code which directly references __page_size, you're seeing an effect from this change.
However, it looks like the method signature for int getpagesize() hasn't changed across NDK versions or across API levels, so you should be able to resolve this error by replacing the usage of __page_size with getpagesize() in the following locations:
SuperpoweredSource/decoder/SuperpoweredDecoder.cpp:120
SuperpoweredSource/decoder/hlsreader.cpp:582
Update:
To fix it without modifying the Superpowered source code, you'd need to define the symbol __page_size. To do that, you could build a tiny dummy library which just contains
#include <unistd.h>
extern unsigned int __page_size = getpagesize();
Then, add a module for this library to your Android.mk (or your build.gradle if you're using the new experimental system) and make the module for Superpowered depend on the dummy module.
Or, you could file a bug report with Superpowered.
So as a workaround for the situation I reverted NDK to r10e which worked. Will be using it until Superpowered library gets a fix. Great thanks to #bullsy
I tried to compile sofia-sip native library using Android NDK.
getting this error always:
/home/umn/android/android-ndk-r7c/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.4.3/../../../../arm-linux-androideabi/bin/ld:
cannot find -lssl collect2: ld returned 1 exit status
I never had a problem compiling the AOSP version until 5.x. Now I'm trying to compile Android 6.0, which switched toolchain and uses Jack (Java Android Compiler Kit) but the compilation aborts.
The error seems to be related with a problem in compiling C object files, so the ld linker at some point starts producing file is empty errors such as the following one:
host SharedLib: libart (out/host/linux-x86/obj/lib/libart.so)
prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8//x86_64-linux/bin/ld: error: out/host/linux-x86/obj/SHARED_LIBRARIES/libart_intermediates/check_jni.o: file is empty
When I check these files their size is 0 bytes. I tried the process two times before writing this, but every time the make process stops with the follosing error:
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [out/host/linux-x86/obj/lib/libart.so] Error 1
Have you experienced something like this and found a solution?
I am trying to build the x86 image on AOSP 4.3 source code.
followed below steps:
source build/envsetup.sh
lunch ( selected aosp_x86-eng)
make -j4
It gives below error.
bionic/libc/include/string.h:219: error: undefined reference to '__strlen_chk'
bionic/libc/include/string.h:219: error: undefined reference to '__strlen_chk'
bionic/libc/include/string.h:219: error: undefined reference to '__strlen_chk'
bionic/libc/include/string.h:219: error: undefined reference to '__strlen_chk'
Question:
It the steps for building x86 in AOSP 4.3 is correct?
How we can fix the above error.
I've solved it when building libcurl. The key idea is setting D_FORTIFY_SOURCE=0 in flags to disable checks, as mentioned in the source code.
LOCAL_STATIC_LIBRARIES += libc