valgrind error when using ssh connection

try : ssh userid@host "valgrind"
error message : valgrind : failed to start tool 'memcheck' for platform 'x86-linux' ...


check : ssh userid@host "env; valgrind"
...

if no "VALGRIND_LIB" settings, you can try again as follow:

check : ssh userid@host "export VALGRIND_LIB=/usr/lib/valgrind; valgrind"
of
check : ssh userid@host "export VALGRIND_LIB=/usr/local/lib/valgrind; valgrind"

...

reason : valgrind cannot found memcheck or callgrind for x86-linux platform, they should be located at valgrind lib directory such as "/usr/lib/valgrind" or "/usr/local/lib/valgrind"

solution

modify sshd_config :
PermitUserEnvironment no --> yes

add user ssh environment file
#> vi ~/.ssh/environment
VALGRIND_LIB=/usr/lib/valgrind
or
VALGRIND_LIB=/usr/local/lib/valgrind

and, you should restart sshd on server.

Android (froyo) full source compile on Snow Leopard (MacOS 10.6)

Conditions

MacOS 10.6 (named "Snow Leopard")

Intel/x86 machine

Create new case-sensitive disk image

how to: http://sites.google.com/a/android.com/opensource/download

Install the XCode version 2.4 or later

how to: http://developer.apple.com

Install MacPorts and modify your .bash_profile file.

how to: http://sites.google.com/a/android.com/opensource/download

Note: Please, check the version of gmake

If the version of installed gmake is 3.82, you should downgrade to 3.81

how to:

>sudo port installed gmake

>sudo port install subversion

>svn co -r 71288 http://svn.macports.org/repository/macports/trunk/dports/devel/gmake

>cd gmake

>sudo port install +gmake

The following ports are currently installed:

gmake @3.81_0 (active)

gmake @3.82_0

Install Java-1.5.0 for Leopard

how-to:

>curl -o java.1.5.0-leopard.tar.gz http://www.cs.washington.edu/homes/isdal/snow_leopard_workaround/java.1.5.0-leopard.tar.gz

>tar -xvzf java.1.5.0-leopard.tar.gz

>sudo mv 1.5.0 /System/Library/Frameworks/JavaVM.framework/Versions/1.5.0-leopard

>cd /System/Library/Frameworks/JavaVM.framework/Versions/

>sudo rm 1.5.0

>sudo ln -s 1.5.0-leopard 1.5.0

>open /Applications/Utilities/Java\ Preferences.app

Change the preference to as shown in the image below.

You would have to drag and drop different Java version to change the preference.

Install Repo and get Android source files

how to: http://sites.google.com/a/android.com/opensource/download

Build

how to: http://sites.google.com/a/android.com/opensource/download

Solving errors:

case 1:

/Developer/SDKs/MacOSX10.4u.sdk/usr/include/stdarg.h:4:25: error: stdarg.h: No such file or directory

In file included from external/qemu/elff/dwarf_die.h:21,

from external/qemu/elff/elf_file.h:20,

from external/qemu/elff/dwarf_cu.cc:20:

external/qemu/elff/elf_alloc.h: In static member function ‘static void* DwarfAllocBase::operator new(size_t)’:

external/qemu/elff/elf_alloc.h:156: warning: ‘operator new’ must not return NULL unless it is declared ‘throw()’ (or -fcheck-new is in effect)

make: *** [out/host/darwin-x86/obj/STATIC_LIBRARIES/emulator-elff_intermediates/elff/dwarf_cu.o] Error 1

solution

>vi external/qemu/Makefile.android

find

MY_CFLAGS += -mdynamic-no-pic

replace

MY_CFLAGS += -mdynamic-no-pic -I /Developer/usr/lib/gcc/i686-apple-darwin10/4.0.1/include/

case 2:

external/v8/src/arm/assembler-arm-inl.h: In constructor

‘v8::internal::Operand::Operand(const v8::internal::ExternalReference&)’:

external/v8/src/arm/assembler-arm-inl.h:172: error: cast from ‘v8::internal::byte*’ to ‘int32_t’ loses precision

In file included from external/v8/src/macro-assembler.h:87,

from external/v8/src/ic-inl.h:33,

from external/v8/src/assembler.cc:39:

external/v8/src/arm/assembler-arm-inl.h: In constructor

‘v8::internal::Operand::Operand(const char*)’:

external/v8/src/arm/assembler-arm-inl.h:165: error: cast from ‘const char*’ to ‘int32_t’ loses precision

external/v8/src/arm/assembler-arm-inl.h: In constructor

‘v8::internal::Operand::Operand(const v8::internal::ExternalReference&)’:

external/v8/src/arm/assembler-arm-inl.h:172: error: cast from ‘v8::internal::byte*’ to ‘int32_t’ loses precision

Solution

>vi build/core/config.mk

find

PREBUILT_IS_PRESENT := $(if $(wildcard prebuilt/Android.mk),true)

replace

PREBUILT_IS_PRESENT := $(if $(wildcard prebuilt/Android.mk),true)

ifeq ($(HOST_OS),darwin)

HOST_GLOBAL_CFLAGS += -arch i386

HOST_GLOBAL_CPPFLAGS += -arch i386

HOST_GLOBAL_LDFLAGS += -arch i386

endif

case 3:
ld: warning: in out/host/darwin-x86/obj/STATIC_LIBRARIES/libhost_intermediates/libhost.a, file is not of required architecture
Undefined symbols:
"_main", referenced from:
start in crt1.10.6.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [out/host/darwin-x86/obj/EXECUTABLES/acp_intermediates/acp] Error 1

Solution

>vi build/core/combo/darwin-x86.mk

or

>vi build/core/combo/HOST_darwin-x86.mk

find

$(HOST_CXX) \
-dynamiclib -single_module -read_only_relocs suppress \
$(HOST_GLOBAL_LD_DIRS) \

replace

$(HOST_CXX) \
-dynamiclib -single_module -read_only_relocs suppress \
$(HOST_GLOBAL_LD_DIRS) \

$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
$(HOST_GLOBAL_LDFLAGS) \
) \

find

$(HOST_CXX) \
-Wl,-dynamic -headerpad_max_install_names \
$(HOST_GLOBAL_LD_DIRS) \
$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \

replace

$(HOST_CXX) \
-Wl,-dynamic -headerpad_max_install_names \
$(HOST_GLOBAL_LD_DIRS) \
$(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \

$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
$(HOST_GLOBAL_LDFLAGS) \
) \

New Google Android Handset from Motorola

http://www.motorola.com/staticfiles/Consumers/global/flash_content/microsites/simulator/simulator_en_US.html

Robot Runs on 2-Wheeled Scooter

The country's first two-legged working robot, named Hubo, has learned to move around by means other than its feet _ aboard an electric scooter (See the front page of The Korea Times, Aug. 25, 2006 edition).

Prof. Oh Jun-ho at the Korea Advanced Institute of Science and Technology said Friday that his team had recently designed a method for Hubo to ride a two-wheeled scooter created by the U.S.-based Segway.

``Hubo is the first robot in the world to get on a Segway. There have been robots attached to Segway-like devices, though,'' said Oh who developed Hubo in 2004.

``The Segway helps Hubo travel fast _ roughly 20 kilometers per hour. This compares to its present walking speed of 1.3 kilometers per hour,'' Oh said.

Oh added the Segway will allow Hubo to maneuver easily in a variety of environments such as narrow areas, where it has struggled to pass through up until now.

The Segway is a one-axle, stand-up transporter with a rechargeable battery and a unique control system that redirects the bike in the direction the rider leans.

Invented by Dean Kamen and unveiled in Dec. 2001, the high-tech self-balancing device is used by various emergency management and police agencies across the globe.

``Currently, Hubo moves on board the Segway remotely controlled by a human. We plan to program Hubo to steer the Segway itself later this year,'' Oh said.

``Eventually, Hubo will step onto the Segway and drive the transportation device. Because Hubo's hardware is good enough to do so, it is not a challenging job,'' he said.

Hubo, the name coined by combining humanoid and robot, is popular here.Sporting the face of Albert Einstein, the bi-pedal robot gained international stardom in late 2005 during the Asia-Pacific Economic Cooperation forum by greeting world leaders.

Mundie: Future software to exist in the clouds and on your PC

May 15, 2007 11:40 AM PDT

Posted by Robert Vamosi

For all the talk about future software leaving the desktop and running exclusively from services on the Internet, Microsoft chief research and strategy officer Craig Mundie doubts this will be so. Speaking in Los Angeles at WinHEC 2007, Mundie's keynote speech, The Evolution of Computing, described, in part, the future of software. He admitted desktop software has reached a road bump; faster apps will require faster CPUs on the PC and that's becoming harder to accomplish--the old way.

Mundie talked on Tuesday morning about the evolution of multicore processor architecture on desktops and laptops. He said that the 3GHz dual-core processor on today's PCs will soon give way to 3GHz quad-core and then 3GHz eight-cores down the road. The new processors will require new software languages. The new programming languages will run programs in parallel and on multiple platforms--PC, mobile, and the Internet.

Mundie says current software poorly utilizes the full CPU potential of any PC; most of the time our screensaver kicks in and performs no background operations. Mundie predicts new software on the PC will utilize the full potential, being capable of anticipating tasks performed frequently (such as downloading Web mail) and perhaps executing these before we sit down to the computer in the morning. Given the PC will soon become a "supercomputer on a die," capable of fast, parallel computations, he says there's room for both Internet-based services and a robust new environment for PC software development.

Web 2.0 Expo. Keynote by Amazon CEO

Touch screen without touch!?

New touch screen without finger touchs... ;)

Touch screens are certainly cool when used in the right place. Touch screen tech isn’t all that great for those who have used it to replace a PC mouse. The pointer never seems to go where you want it too. Another big side effect is that you end up with gobs of greasy fingerprints all over your screen.

A company called TouchKo has a solution for the dirty display woes associated with touch screens in the form of a touch screen you don’t have to touch; it relies on sensors that allow you to control the screen from up to six inches away. Intended for medical use the technology behind it will likely make its way to consumer gear at some point. Story and image via Sci Fi Tech.

Click image to watch movie clip

Reference news :

A touchscreen you don't need to touch

Touchscreens are all the rage these days, what with the upcoming iPhone bringing them to the forefront of the gadget world. They aren't without their drawbacks, however. The lack of tactile feedback generally makes them difficult to control, at least until you get used to it, and you end up getting greasy thumbprints all over the nice, shiny screen of your flashy new device.
This touchscreen monitor from TouchKo might not solve that first problem, but at least it'll stay clean for you after a lot of use. That's because it's a touchscreen you don't even need to touch, instead relying on sensors to be controlled from up to 6 inches away. Just wave your hand near it and it'll understand your gesture and translate it into a command. It's designed for medical use, but it'll be interesting to see what consumer applications this makes its way into. Hit the jump for a video of the screen in action. — Adam Frucci

A touchscreen you don't need to touch