Category: Dart

Environment

• Ubuntu 16.04 LTS
• arm-linux-gnueabihf (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
• Dart SDK, master 1.24.0-edge.eb1839b8fd453b6c0c93376346743fa96db48440
  
• Raspberry Pi 3 Model B

Download and build Dart SDK

See Dart: build Dart SDK for x86 and ARM.

Important: though Raspberry Pi 3 has a 64-bit CPU the Raspbian OS does not support 64-bit builds at the moment of writing – we will build 32-bit Dart SDK for ARM.

Alternatively, you can download pre-built Dart SDK for ARM:

$ wget https://storage.googleapis.com/dart-archive/channels/stable/release/2.2.0/sdk/dartsdk-linux-arm-release.zip.sha256sum

Upgrade libstdc++ to 6.0.21

See Raspberry Pi: how to solve the “version `GLIBCXX_6.0.21′ not found” problem.

Copy Dart VM to Raspbbery Pi

Ubuntu:

$ cd dart-sdk/sdk
$ scp -r out/ReleaseXARM/dart-sdk/bin/dart pi@192.168.0.xxx:/home/pi

Raspberry Pi:

$ sudo mv dart /usr/local/bin

Restart Raspberry Pi ssh session, then check if Dart VM works:

$ dart --version
Dart VM version: 1.24.0-edge.eb1839b8fd453b6c0c93376346743fa96db48440 (Sun Apr 16 18:04:59 2017) on "linux_arm"

Hello World application

Create helloworld.dart file with the following content:

main() {
  print('Hello world!');
}

Run the application:

$ dart helloworld.dart 
Hello world!

Based on Building Dart, Building Dart SDK for ARM processors and Building Dart SDK for Raspberry Pi.

Environment

• Ubuntu 16.04 LTS
• arm-linux-gnueabihf (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609
• Dart SDK, master f6a2fb0050eeaf24706da66bdd73c2f3c9770f96
  

x86 toolchain

Pre-installed in Ubuntu (16.04 LTS).

ARM 32-bit toolchain

See Raspberry Pi: C++ cross-compiling .

ARM 64-bit toolchain

$ sudo apt-get install g++-aarch64-linux-gnu

Other build tools

$ sudo apt-get install g++ git make python
$ sudo apt-get install g++-multilib

Install Chromium depot_toops

$ git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
$ export PATH="$PATH:$PWD/depot_tools"

Get the source

$ mkdir dart-sdk
$ cd dart-sdk
$ gclient config https://github.com/dart-lang/sdk.git
### Checkout HEAD
$ gclient sync
### Checkout a tag, e.g. 1.9.3
$ gclient sync --revision=1.9.3

Create (if missing) symbolic links

create_sdk build will fail if the following symbolic links are missing:

$ sudo ln -s /usr/include/x86_64-linux-gnu/asm/ /usr/include/asm
$ sudo ln -s /usr/include/x86_64-linux-gnu/bits/ /usr/include/bits

Build 64-bit x86

$ cd dart-sdk/sdk
$ ./tools/build.py --mode release --arch x64 create_sdk

Build 32-bit x86

$ cd dart-sdk/sdk
$ ./tools/build.py --mode release --arch ia32 create_sdk

Build for 32-bit ARM

$ cd dart-sdk/sdk
$ ./tools/build.py --mode release --arch arm create_sdk

The build fails (master #eb1839b):

g++ -MMD -MF x86/obj/runtime/bin/gen_snapshot_dart_io/eventhandler_linux.o.d -DDART_IO_SECURE_SOCKET_DISABLED -D_FORTIFY_SOURCE=2 -DNDEBUG -DTARGET_OS_LINUX -DTARGET_ARCH_ARM -DNDEBUG -DDART_USE_TCMALLOC -DDART_PRECOMPILER -I../../runtime -I../../third_party -I../.. -Ix86/gen -I../../third_party/tcmalloc/gperftools/src -I../../third_party/zlib -m32 -msse2 -mfpmath=sse -fno-exceptions -pthread -Wall -Wextra -Werror -Wendif-labels -Wno-missing-field-initializers -Wno-unused-parameter -Wno-unused-local-typedefs -O3 -fno-ident -fdata-sections -ffunction-sections -g3 -ggdb3 -Werror -Wall -Wextra -Wno-unused-parameter -Wnon-virtual-dtor -Wvla -Wno-conversion-null -Woverloaded-virtual -g3 -ggdb3 -fno-rtti -fno-exceptions -O3 -fvisibility-inlines-hidden -fno-omit-frame-pointer -fno-rtti -fno-exceptions -c ../../runtime/bin/eventhandler_linux.cc -o x86/obj/runtime/bin/gen_snapshot_dart_io/eventhandler_linux.o
In file included from ../../runtime/vm/simulator_arm.h:19:0,
                 from ../../runtime/vm/simulator.h:15,
                 from ../../runtime/vm/atomic.h:11,
                 from ../../runtime/bin/reference_counting.h:8,
                 from ../../runtime/bin/socket.h:14,
                 from ../../runtime/bin/eventhandler_linux.cc:27:
../../runtime/vm/constants_arm.h:263:17: error: ‘dart::STMP’ defined but not used [-Werror=unused-variable]
 const SRegister STMP = EvenSRegisterOf(DTMP);
                 ^
cc1plus: all warnings being treated as errors
ninja: build stopped: subcommand failed.
BUILD FAILED

This can be fixed by changing the dart-sdk/sdk/runtime/vm/constants_arm.h file, lines 262-263 from:

const DRegister DTMP = EvenDRegisterOf(QTMP);  
const SRegister STMP = EvenSRegisterOf(DTMP);

to:

const DRegister DTMP __attribute__((unused)) = EvenDRegisterOf(QTMP);  
const SRegister STMP __attribute__((unused)) = EvenSRegisterOf(DTMP);

Raspberry Pi note: This procedure will produce a useful Dart VM – the dart and pub utilities.

Pre-built 32-bit ARM Dart SDK image

$ wget http://share.geomodule.com/dart-sdk-f6a2fb0050eeaf24706da66bdd73c2f3c9770f96.tar.gz

Build for 64-bit ARM

$ cd dart-sdk/sdk
./tools/build.py --mode release --arch arm64 create_sd

Install Dart SDK on Raspberry Pi

Make sure you have correct version of the GLIBCXX library, see here:

http://sw-eng-notes.geomodule.com/2017/04/16/raspberry-pi-how-to-solve-version-glibcxx_6-0-21-not-found/

# On your build host host
$ cd dart-sdk
$ scp -r sdk/out/ReleaseXARM/dart-sdk pi@192.168.0.xxx:~/dart-sdk
# On Raspberry Pi
# Add the following line at the end of .bashrc
# export PATH=${PATH}:/home/pi/dart-sdk/bin
$ dart --version
Dart VM version: 1.24.0-edge.eb1839b8fd453b6c0c93376346743fa96db48440 (Sun Apr 16 18:04:59 2017) on "linux_arm"
$ pub --version
Pub 1.25.0-edge.511963d71509de50ac577ac22f3bac8d33c17e34