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build_wamr.md

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Build WAMR Core

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

Linux

First of all please install library dependencies of lib gcc. Use installation commands below for Ubuntu Linux:

sudo apt install lib32gcc-5-dev g++-multilib

Or in Fedora:

sudo dnf install glibc-devel.i686

After installing dependencies, build the source code:

cd core/iwasm/products/linux/
mkdir build
cd build
cmake ..
make

Note: The WASI feature is enabled by default, if we want to disable it, please run:

cmake .. -DWASM_ENALBE_WASI=0

Linux SGX (Intel Software Guard Extention)

First of all please install library dependencies of lib gcc. Use installation commands below for Ubuntu Linux:

sudo apt install lib32gcc-5-dev g++-multilib

Or in Fedora:

sudo dnf install glibc-devel.i686

And then install the Intel SGX SDK.

After installing dependencies, build the source code:

source <SGX_SDK dir>/environment
cd core/iwasm/products/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

Mac

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 core/iwasm/products/darwin/
mkdir build
cd build
cmake ..
make

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 core/iwasm/products/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).

WASI

On Linux, WASI is enabled by default. To build iwasm without wasi support, pass an option when you run cmake:

cmake .. -DWASM_ENABLE_WASI=0
make

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 <iwasm_dir>/products/zephyr/simple .
cd simple
ln -s <iwam_dir> iwasm
ln -s <shared_lib_dir> shared-lib
mkdir build && cd build
source ../../../zephyr-env.sh
cmake -GNinja -DBOARD=qemu_x86 ..
ninja

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 <iwasm_root_dir>/products/alios-things directory to AliOS-Things/middleware, and rename it as iwasm 
    cp -a <iwasm_root_dir>/products/alios-things middleware/iwasm
  4. create a link to <iwasm_root_dir> in middleware/iwasm/ and rename it to iwasm 
    ln -s <iwasm_root_dir> middleware/iwasm/iwasm
  5. create a link to <shared-lib_root_dir> in middleware/iwasm/ and rename it to shared-lib 
    ln -s <shared-lib_root_dir> middle/iwasm/shared-lib
  6. 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();
    ...
}
  7. modify file app/example/helloworld/aos.mk 
       $(NAME)_COMPONENTS := osal_aos iwasm
  8. build source code 
    aos make helloworld@developerkit -c config
aos make
  9. 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.