i want to cross compile nodejs for my Arm based board.  After enough
googling i am still not able to get it right.
Can some one please refer some good document or summarize build procedure
of nodejs for arm

  $ CC=arm-linux-gcc ./configure --dest-cpu=arm

You can optionally specify the floating point ABI with
--with-arm-float-abi=soft|softfp|hard

Cheers!

Thanks Ban and Nathan
Actually i tried both the methods and get the error

*NameError: name 'arm_neon' is not defined while evaluating condition
'arm_neon!=1 and arm_fpu!="vfpv3" and arm_fpu!="vfpv3-d16"' in
/home/nodejs/deps/v8/tools/gyp/v8.gyp while loading dependencies of
/home/nodejs/node.gyp while trying to load /home/nodejs/node.gyp*

Does it mean that i need to cross compile v8 separately and then try to
compile nodejs ?? or some configuration change is required ?

Commented following portion in deps/v8/tools/gyp/v8.gyp  and compilation
was success with --without-snapshot option
  149                   'conditions': [
    150                     ['armv7==1', {
    151                       # The ARM Architecture Manual mandates VFPv3
if NEON is
    152                       # available.
    153                       # The current V8 doesn't use d16-d31, so for
vfpv3-d16, we can
    154                       # also enable vfp3 for the better performance.
    155                       'conditions': [
    156 #        ['arm_neon!=1 and arm_fpu!="vfpv3" and
arm_fpu!="vfpv3-d16"', {
    157 #                        'variables': {
    158 #                          'mksnapshot_flags': [
    159 #                            '--noenable_vfp3',
    160 #                           ],
    161 #                         },
    162 # }],
    163                       ],

i do not understand what is --without-snapshot option option and what
commented portion does. can someone please telll
I need to run executable on my board and check for error if any !!

can someone please explain the impact of these on my system's performance.

https://gist.github.com/9c4d01a7d3091398a1be

Hi Ben,
Patch did work for me. Thanks for the help

Wow, that is an awesome tip.

I really want see my nodes running in tablates or phones.

Em quarta-feira, 19 de setembro de 2012 09h27min38s UTC-3, Sumit Aggarwal
escreveu:

Hello Ben and Moreira
i want to use nodejs for enhancement of device capabilities and want to do
something like this
1. Make device as http web server. something like done by nokia "
http://research.nokia.com/page/231".
So that i can expose device capabilities to a web application and making
device controllable by web like playing music, sharing data and may more.

2. Next step i have not decided yet but it should be something like
supporting cross device web apps.

But fist step is very important to understand if i can achieve what i want
and i am into right direction. Step Zero (Porting nodejs
is already complete with Ben's help )
Can you suggest some good reference for making device as REST web server.
and easily map c++ APIs.

i am a C++ developer and new to js. so making me slower in develop
something in JS.

If you're not set on a particular device yet, you might pick up a used webOS device cheaply.  You're restricted to Node v0.2.3 on phones (Palm Pre 2 or HP Veer) and v0.4.12 on the HP TouchPad, but Node is already tested and optimized. Plus, you can easily write a front end to configure your website in JavaScript as well.

You can even distribute through the App Catalog: http://developer.palm.com/appredirect/?packageid=com.hominidsoftware....

Ben,

This patch fixes this for me. I have been fighting this since v0.6.19.
Thank you!

VFPv3 is the default for ARMv7, but not required:
http://www.arm.com/products/processors/technologies/vector-floating-p...

These flags could be more reliably set from /proc/cpuinfo or the command
line,
but grokking compiler flags is more portable...

Cheers,
Jon Kunkee

The two systems I have access to here at school are both armv7l and
support vfpv3.

I was thinking intelligently enabling NEON might be a performance boost,
but I have no idea how to benchmark that.

Cheers,
Jon

I am having some problems cross compiling NodeJS for ARM processor, my
ultimate
target is to have it run under Android on a CubieBoard, the AllWinner A10
part.

Following Nathan's post, I am trying to compile either node v0.8.9 or
v.0.10.3.
My host platform is a CentOS X64 VM using the
gcc-linaro-aarch64-linux-gnu-4.7 tool chain.

It seems to start out just fine until it tries to compile V8 then it has a
problem saying that the
ARM target is only supported on a 32bit host, but I have 32bit support
added in. I have also
successfully compiled V8 against the NDK toolchain following this post, and
it runs under
Android. http://code.google.com/p/v8/wiki/D8OnAndroid

Has anyone seen this problem, below is the compiler output. It's the same
for both releases.

-John Gentilin

  aarch64-linux-gnu-g++ '-DENABLE_DEBUGGER_SUPPORT' '-DENABLE_EXTRA_CHECKS'
'-DV8_TARGET_ARCH_ARM' '-DUSE_EABI_HARDFLOAT=0' -I../deps/v8/src  -Wall
-Wextra -Wno-unused-parameter -pthread -fno-strict-aliasing -O2
-fno-strict-aliasing -fno-tree-vrp -fno-rtti -fno-exceptions -MMD -MF
/usr/local/src/node-v0.10.3/out/Release/.deps//usr/local/src/node-v0.10.3/o ut/Release/obj.target/v8_base/deps/v8/src/accessors.o.d.raw  
-c -o
/usr/local/src/node-v0.10.3/out/Release/obj.target/v8_base/deps/v8/src/acce ssors.o
../deps/v8/src/accessors.cc                                                                            

In file included from
../deps/v8/src/v8globals.h:31:0,                                                                    

                 from
../deps/v8/src/v8.h:53,                                                                            

                 from
../deps/v8/src/accessors.cc:28:                                                                    

../deps/v8/src/globals.h:90:2: error: #error Host architecture was not
detected as supported by v8                        
../deps/v8/src/globals.h:120:2: error: #error Target architecture arm is
only supported on arm and ia32 host              
In file included from
../deps/v8/src/platform.h:99:0,                                                                    

                 from
../deps/v8/src/v8utils.h:32,                                                                        

                 from
../deps/v8/src/v8.h:56,                                                                            

                 from
../deps/v8/src/accessors.cc:28:                                                                    

../deps/v8/src/atomicops.h:168:2: error: #error "Atomic operations are not
supported on your platform"                    
In file included from
../deps/v8/src/lazy-instance.h:94:0,                                                                

                 from
../deps/v8/src/platform.h:100,                                                                      

                 from
../deps/v8/src/v8utils.h:32,                                                                        

                 from
../deps/v8/src/v8.h:56,                                                                            

                 from
../deps/v8/src/accessors.cc:28: