Develop Reference

How to compile and execute MPICH2 for Android

For cross compiling MPICH2 for Android.
I found the reference here
http://hex.ro/wp/projects/personal-cloud-computing/compiling-mpich2-for-android-and-running-on-two-phones/
and here
www.scientificbulletin.upb.ro/rev_docs_arhiva/fullffc_583765.
I did following
BuildRoot
Used Build Root (buildroot-2016.02) for cross compiling ARM toolchain
Target options :
Target Architecture as ARM little endian
Target binary format as ELF
Selected Toolchain as Buildroot toolchain (Internal)
Kernel headers as 3.12.x
C library as uClibc
After this make command was run.
MPICH2
mpich-3.2.tar.gz was extracted and following commands were executed
1. $ export PATH=/home/mpiuser/CrossBuild/buildroot-2016.02/output/host/usr/bin:$PATH
2. $ sudo ./configure --prefix=/home/mpiuser/CrossBuild/arm-mpich-install --disable-fortran CC=/home/mpiuser/CrossBuild/buildroot-2016.02/output/host/usr/bin/arm-linux-gcc --host=arm-linux
After this make was run for mpich-3.2, and during compilation following error was thrown :
GEN lib/libmpi.la
CXX src/binding/cxx/initcxx.lo
CXXLD lib/libmpicxx.la
lib/.libs/libmpi.so: error adding symbols: File in wrong format
collect2: error: ld returned 1 exit status
make[2]: *** [lib/libmpicxx.la] Error 1
make[2]: Leaving directory `/home/mpiuser/CrossBuild/mpich-3.2'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/mpiuser/CrossBuild/mpich-3.2'
make: *** [all] Error 2
Request to please help. Thanks

Running AOSP on MAC: stdarg.h error

I have the source code for android-5.0.0_r7.0.1. After doing:
make -j4
I keep getting this:
error: stdarg.h: No such file or directory
In file included from system/core/include/cutils/log.h:1,
from system/core/include/utils/KeyedVector.h:24,
from frameworks/native/include/input/Input.h:26,
from frameworks/native/include/input/InputDevice.h:20,
from frameworks/native/libs/input/InputDevice.cpp:23:
system/core/include/log/log.h:35:20: error: stdarg.h: No such file or directory
make: *** [out/host/darwin-x86/obj32/EXECUTABLES/validatekeymaps_intermediates/Main.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [out/host/darwin-x86/obj32/STATIC_LIBRARIES/libinput_intermediates/Keyboard.o] Error 1
make: *** [out/host/darwin-x86/obj32/STATIC_LIBRARIES/libinput_intermediates/InputDevice.o] Error 1
make: *** [out/host/darwin-x86/obj32/STATIC_LIBRARIES/libinput_intermediates/Input.o] Error 1
#### make failed to build some targets (01:32 (mm:ss)) ####
I have looked at the google groups and other stack overflow questions, but I cannot seem to figure out what is going wrong.

#Meteorite
Well, ultimately after googling I discovered the AOSP for some reason did not support the latest version of Xcode tools and OS X. I dualbooted windows 7 with ubuntu, and did the whole process. And when I did the make command on ubuntu I typed: make -k -i -B. That is, I gave it the keep going, ignore make errors and build unconditionally flags.

Android cmake cannot find -lpthread

I'm trying to compile a shared library using cmake. I followed the instruction on this tutorial to change the toolchain for android NDK.
However, I'm getting the following output error:
/home/usr/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.9/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lpthread
collect2: error: ld returned 1 exit status
make[2]: *** [../libs/armeabi-v7a/libutils.so] Error 1
make[1]: *** [src/CMakeFiles/utils.dir/all] Error 2
make: *** [all] Error 2
A bit of googling around and I stumble upon this stackoverflow post. So I modified my CMakeLists.txt to add:
set(CMAKE_CXX_FLAGS"-DHAVE_PTHREADS")
but it seems like it still doesn't work. Am I going about this the wrong way?
Thanks!

Failing to build a simple hello world apk

I am running Windows 8.1 trying to start cocos2d-x. I've got version 3.4 on the system and every time I try building the hello world app the following shows up:
No rule to make target d:/android-ndk/sources/android/cpufeatures/cpu-features.c', needed by obj/local/armeabi/objs-debug/cpufeatures/cpu-features.o`
Waiting for unfinished jobs....
StaticLibrary : libcocos2dandroid.a
make: Leaving directory C:/android/cocos2d-x-3.4/NEW_PROJECTS_DIR/MyGame/proj.android
Ndk build failed
C:\android\cocos2d-x-3.4\NEW_PROJECTS_DIR\MyGame>`
I am using the ndk r9 for this and it's located at c:/android/adt/ndk.
I've tried ndk r10d as well but it brings up the following error instead:
collect2.exe: error: ld returned 1 exit status
make: *** [obj/local/armeabi/libcocos2dcpp.so] Error 1
make: Leaving directory `C:/android/cocos2d-x-3.4/tutorialV3CPPWindows/proj.andr
oid'
Ndk build failed
But I think that the problem is with the ndk. I am quite new to this and have been using tutorials and guides, so detail would be appreciated.

If you use eclipse,check your NDK_ROOT path
the error info
No rule to make target d:/android-ndk/sources/android/cpufeatures/cpu-features.c'
but your ndk r9 is atc:/android/adt/ndk
They are not the same.

Building Pocketsphinx On Android on Windows

I have been following this Building Pocketsphinx on android for days now and I am very confused what to do now. I will be telling what I have done step by step so you will know what I have done wrong.
I am using Windows 7 64-bit.
First of all I have downloaded PocketSphinx and Sphinxbase and I have unpack it in C:\Sphinx. Then I have downloaded mingw from MINGW DOWNLOAD only that. after I downloaded this stuffs, I started the mingw.exe and as a amateur I am, I tried sudo -i only and that did not do anything so I gone to the next instructions installing swig.
I tried typing apt-get install swig and yum install swig as the same as last time it did not work. Then I have tried mingw-get install swig and the result is mingw-get.exe: *** ERROR *** swig: unknown package. So with that I tried again the next intructions installation of sphinxbase.
In installing sphinxbase, I have gone to sphinxbase directory - C:\Sphinx\sphinxbase and I typed ./autogen.sh. So with that it compiled without problems and I typed ./configure It compiled good as well. the next is make this is where I got a problem, it compiled but it got errors. the error is:
make[3]: *** [pio.lo] Error 1
make[3]: Leaving directory `/c/sphinx/sphinxbase/src/libsphinxbase/util`
make[2]: *** [All-recursive] Error 1
make[2]: Leaving directory `/c/sphinx/sphinxbase/src/libsphinxbase`
make[1]: *** [All-recursive] Error 1
make[1]: Leaving directory `/c/sphinx/sphinxbase/src`
make: *** [all-recursive] Error 1
this is the problem I got until now. Then I have tried downloading pio.lo from pio.lo download. So it fix the error but another error appeared. Second Error:
collect2.exe: error: ld returned 1 exit status
make[2]: *** [sphinx_fe.exe] Error 1
make[2]: Leaving directory `/c/sphinx/sphinxbase/src/sphinx_fe`
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/c/sphinx/sphinxbase/src`
make: *** [all-recursive] Error 1
This is where I got stuck. I have tried copying sphinx_fe from sphinxbase-0.7-win32.zip after doing that nothing happens. The compilation would only delete the sphinx_fe.exe.
My question is What Should I do now?
If it is not clear feel free to comment and ask. Thank you for the help.

MinGW is not supported for now, try to use Cygwin instead.
Actually you don't need to run autogen.sh and make, it's enough to unpack sources
sudo, yum and other commands are Unix only commands, you need to search for their analog on windows.
For more information about SWIG on windows see
http://www.swig.org/Doc2.0/Android.html