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

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!

/bin/sh: scripts/basic/fixdep: cannot execute binary file

I try to build the rt73.ko linux driver for android using cross complile. I have download the android NDK and the Kernel sources of the the target system (Rockchip RK3066) and when I build the driver I am getting the following error:
root#slax:~/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module# make
CROSS_COMPILE=arm-linux-androideabi- make -C /root/kernel
SUBDIRS=/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module mod-ules
make[1]: Entering directory /root/kernel' CC [M]
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.o
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c: In
function 'usb_rtusb_probe':
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c:1152:3:
warning: return makes integer from pointer without a cast [enabled by
default] /root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c:
In function 'usb_rtusb_disconnect':
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c:1315:2:
warning: ISO C90 forbids mixed declarations and code
[-Wdeclaration-after-statement]
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c: In
function 'usb_rtusb_close':
/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.c:655:1:
warning: the frame size of 2128 bytes is larger than 1024 bytes
[-Wframe-larger-than=]
/root/android-ndk-r8c/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/as:
/usr/lib/libz.so.1: no version information available (required by
/root/android-ndk-r8c/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/as)
/bin/sh: scripts/basic/fixdep: cannot execute binary file make[2]: ***
[/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module/rtmp_main.o] Error
126 make[1]: ***
[_module_/root/2011_0210_RT73_Linux_STA_Drv1.1.0.5/Module] Error 2
make[1]: Leaving directory/root/kernel' make: * [all] Error 2
Could you please help me to overcome the above error?

Although you cross compile, only the kernel can be compiled. scripts/basic/fixdep is userland program.
To overcome this, you need to use http://crosstool-ng.org/ for example.

"cannot open linker script file" when compiling GameKit for Android

When I built Gamekit for Android, I got the follow error:
...(deleted)
[ 98%] Built target OgreKitCore
Linking CXX executable ../../../bin/StripBlend
/usr/local/android-ndk-r8b/toolchains/mipsel-linux-android-4.6/prebuilt/linux-x86/bin/../lib/gcc/mipsel-linux-android/4.6.x-google/../../../../mipsel-linux-android/bin/ld: cannot open linker script file /usr/local/android-ndk/toolchains/mipsel-linux-android-4.6/mipself.x: No such file or directory
collect2: ld returned 1 exit status
make[2]: *** [../bin/StripBlend] Error 1
make[1]: *** [FileTools/Strip/CMakeFiles/StripBlend.dir/all] Error 2
make: *** [all] Error 2
I google it and found a related post:
https://groups.google.com/forum/#!msg/doubango/TVOUjTxfbtA/y6eaikfcTu0J
They just rollback NDK version to fix this problem.
However, I have to build an Android Gamekit library for MIPS CPU, so I need NDK-r8 or NDK-r8b.
Is there any suggestion to fix this problem?
PS: GameKit is http://code.google.com/p/gamekit/

Copy mipself.x and mipself.xsc, which can be downloaded from the Internet,
into /toolchains/mipsel-linux-android-4.6/ folder, and then fix this problem.

Error while building Android V2.2[Froyo] Source Code

I'm getting the following error while building the Froyo Code -
No private recovery resources for TARGET_DEVICE passion
target Generated: libclearsilver-jni <= out/host/common/obj/JAVA_LIBRARIES/clearsilver_intermediates/javalib.jar
target Generated: libclearsilver-jni <= out/host/common/obj/JAVA_LIBRARIES/clearsilver_intermediates/javalib.jar
host C: libneo_util <= external/clearsilver/util/neo_hash.c
host Executable: acp (out/host/linux-x86/obj/EXECUTABLES/acp_intermediates/acp)
/bin/bash: javah: command not found
/bin/bash: javah: command not found
make: *** [out/host/linux-x86/obj/SHARED_LIBRARIES/libclearsilver- jni_intermediates/org_clearsilver_CS.h] Error 127
make: *** Waiting for unfinished jobs....
make: *** [out/host/linux-x86/obj/SHARED_LIBRARIES/libclearsilver- jni_intermediates/org_clearsilver_HDF.h] Error 127
true
Please help me to find out the root cause for this build error.

This is probably a PATH issue. For me I had to do
export PATH=$PATH:/usr/java/jdk1.6.0_25/bin/
To make it work properly.

$ uname -m
x86_64
depending upon x86_64 or XXX32
modified the following files to use m64 for x86_64 and m32 for xxx32 in android directory
/external/clearsilver/cgi/Android.mk
/external/clearsilver/java-jni/Android.mk
/external/clearsilver/util/Android.mk
/external/clearsilver/cs/Android.mk
Edit the above mentioned files using vi or vim editor.
type
LOCAL_CFLAGS += -m64
LOCAL_LDFLAGS += -m64
command in the files below the line "LOCAL_CFLAGS := "
NOTE: If your system is x86_64 download JDK_1.5_update_xx_amd64.bin

Javah is a part of the JDK. Download and install one.