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build_wamr.md

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Build WAMR core (iwasm)

Please follow the instructions below to build the WAMR VM core on different platforms.

Linux

First of all please install the dependent packages. Run command below in Ubuntu-18.04:

sudo apt install build-essential cmake g++-multilib libgcc-8-dev lib32gcc-8-dev

Or in Ubuntu-16.04:

sudo apt install build-essential cmake g++-multilib libgcc-5-dev lib32gcc-5-dev

Or in Fedora:

sudo dnf install glibc-devel.i686

After installing dependencies, build the source code:

cd product-mini/platforms/linux/
mkdir build
cd build
cmake ..
make

The binary file iwasm will be generated under build folder.

Note: WAMR provides some features which can be easily configured by passing options to cmake:

cmake -DWAMR_BUILD_INTERP=1/0 to enable or disable WASM intepreter
cmake -DWAMR_BUILD_AOT=1/0 to enable or disable WASM AOT
cmake -DWAMR_BUILD_JIT=1/0 to enable or disable WASM JIT
cmake -DWAMR_BUILD_LIBC_BUILTIN=1/0 enable or disable Libc builtin API's
cmake -DWAMR_BUILD_LIBC_WASI=1/0 enable or disable Libc WASI API's
cmake -DWAMR_BUILD_TARGET=<arch><sub> to set the building target, including:
    X86_64, X86_32, ARM, THUMB, XTENSA and MIPS
    for ARM and THUMB, we can specify the <sub> info, e.g. ARMV4, ARMV4T, ARMV5, ARMV5T, THUMBV4T, THUMBV5T and so on.

For example, if we want to disable interpreter, enable AOT and WASI, we can:

cmake .. -DWAMR_BUILD_INTERP=0 -DWAMR_BUILD_AOT=1 -DWAMR_BUILD_LIBC_WASI=0

Or if we want to enable inerpreter, disable AOT and WASI, and build as X86_32, we can:

cmake .. -DWAMR_BUILD_INTERP=1 -DWAMR_BUILD_AOT=0 -DWAMR_BUILD_LIBC_WASI=0 -DWAMR_BUILD_TARGET=X86_32

By default in Linux, the interpreter, AOT and WASI are enabled, and JIT is disabled. And the build target is set to X86_64 or X86_32 depending on the platform's bitwidth.

To enable WASM JIT, firstly we should build LLVM:

cd product-mini/platforms/linux/
./build_llvm.sh     (The llvm source code is cloned under <wamr_root_dir>/core/deps/llvm and auto built)

Then pass option -DWAMR_BUILD_JIT=1 to cmake to enable WASM JIT:

mkdir build
cd build
cmake .. -DWAMR_BUILD_JIT=1
make

Linux SGX (Intel Software Guard Extention)

First of all please install the Intel SGX SDK.

After installing dependencies, build the source code:

source <SGX_SDK dir>/environment
cd product-mini/platforms/linux-sgx/
mkdir build
cd build
cmake ..
make

This builds the libraries used by SGX enclave sample, the generated file libvmlib.a and libextlib.a will be copied to enclave-sample folder.

Then build the enclave sample:

source <SGX_SDK dir>/environment
cd enclave-sample
make

The binary file app will be generated.

To run the sample:

source <SGX_SDK dir>/environment
./app

MacOS

Make sure to install Xcode from App Store firstly, and install cmake.

If you use Homebrew, install cmake from the command line:

brew install cmake

Then build the source codes:

cd product-mini/platforms/darwin/
mkdir build
cd build
cmake ..
make

Note: WAMR provides some features which can be easily configured by passing options to cmake, please see Linux platform for details. Currently in MacOS, interpreter, AoT, and builtin libc are enabled by default.

VxWorks

VxWorks 7 SR0620 release is validated.

First you need to build a VSB. Make sure UTILS_UNIX layer is added in the VSB. After the VSB is built, export the VxWorks toolchain path by:

export <vsb_dir_path>/host/vx-compiler/bin:$PATH

Now switch to iwasm source tree to build the source code:

cd product-mini/platforms/vxworks/
mkdir build
cd build
cmake ..
make

Create a VIP based on the VSB. Make sure the following components are added:

  • INCLUDE_POSIX_PTHREADS
  • INCLUDE_POSIX_PTHREAD_SCHEDULER
  • INCLUDE_SHARED_DATA
  • INCLUDE_SHL

Copy the generated iwasm executable, the test WASM binary as well as the needed shared libraries (libc.so.1, libllvm.so.1 or libgnu.so.1 depending on the VSB, libunix.so.1) to a supported file system (eg: romfs).

Note: WAMR provides some features which can be easily configured by passing options to cmake, please see Linux platform for details. Currently in VxWorks, interpreter and builtin libc are enabled by default.

Zephyr

You need to download the Zephyr source code first and embed WAMR into it.

git clone https://github.com/zephyrproject-rtos/zephyr.git
cd zephyr/samples/
cp -a <wamr_root_dir>/product-mini/platforms/zephyr/simple .
cd simple
ln -s <wamr_root_dir> wamr
mkdir build && cd build
source ../../../zephyr-env.sh
cmake -GNinja -DBOARD=qemu_x86_nommu ..
ninja

Note: WAMR provides some features which can be easily configured by passing options to cmake, please see Linux platform for details. Currently in Zephyr, interpreter, AoT and builtin libc are enabled by default.

AliOS-Things

  1. a developerkit board id needed for testing

  2. download the AliOS-Things code

    git clone https://github.com/alibaba/AliOS-Things.git

  3. copy <wamr_root_dir>/product-mini/platforms/alios-things directory to AliOS-Things/middleware, and rename it as iwasm

    cp -a <wamr_root_dir>/product-mini/platforms/alios-things middleware/iwasm

  4. create a link to <wamr_root_dir> in middleware/iwasm/ and rename it to wamr

    ln -s <wamr_root_dir> middleware/iwasm/wamr

  5. modify file app/example/helloworld/helloworld.c, patch as:

    #include <stdbool.h>
#include <aos/kernel.h>
extern bool iwasm_init();
int application_start(int argc, char *argv[])
{
     int count = 0;
     iwasm_init();
    ...
}

  6. modify file app/example/helloworld/aos.mk

       $(NAME)_COMPONENTS := osal_aos iwasm

  7. build source code and run For linuxhost:

    aos make helloworld@linuxhost -c config
aos make
./out/helloworld@linuxhost/binary/helloworld@linuxhost.elf

    For developerkit: Modify file middleware/iwasm/aos.mk, patch as:

    WAMR_BUILD_TARGET := THUMBV7M
    aos make helloworld@developerkit -c config
aos make

    download the binary to developerkit board, check the output from serial port

Docker

Docker will download all the dependencies and build WAMR Core on your behalf.

Make sure you have Docker installed on your machine: macOS, Windows or Linux.

Build the Docker image:

docker build --rm -f "Dockerfile" -t wamr:latest .

Run the image in interactive mode:

docker run --rm -it wamr:latest

You'll now enter the container at /root.