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Initial Dockerfile (#97)

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* Initial Dockerfile

Dockerfile supports clang-8 and adds `iwasm` to `bin`.

* Updated README with Docker instructions

Added to Platform and app building section how to use the docker file to build the core and compile an app with clang.
This commit is contained in:
Jonathan Beri 2019-08-14 05:34:36 +03:00 committed by Wang Xin
parent 3f15fb3424
commit 51ac31eaa1
2 changed files with 52 additions and 1 deletions
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21
Dockerfile Normal file
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# Currently supports clang-8 compiler
# Using the "test.c" app from the README.md:
# clang-8 --target=wasm32 -O3 -Wl,--initial-memory=131072,--allow-undefined,--export=main,--no-threads,--strip-all,--no-entry -nostdlib -o test.wasm test.c
# Pay attention to spacing above! ^
# iwasm test.wasm
FROM ubuntu:latest
RUN apt-get update && \
apt-get -y upgrade && \
apt-get install -y build-essential clang-8 cmake g++-multilib git lib32gcc-5-dev llvm-8 lld-8 nano
WORKDIR /root
RUN git clone https://github.com/intel/wasm-micro-runtime
RUN cd wasm-micro-runtime/core/iwasm/products/linux/ && mkdir build && \
cd build && cmake .. && make
RUN cd /usr/bin && ln -s wasm-ld-8 wasm-ld
RUN cd /usr/bin && ln -s ~/wasm-micro-runtime/core/iwasm/products/linux/build/iwasm iwasm

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README.md
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@ -151,6 +151,23 @@ AliOS-Things
```
9. download the binary to developerkit board, check the output from serial port
Docker
-------------------------
[Docker](https://www.docker.com/) will download all the dependencies and build WAMR Core on your behalf.
Make sure you have Docker installed on your machine: [macOS](https://docs.docker.com/docker-for-mac/install/), [Windows](https://docs.docker.com/docker-for-windows/install/) or [Linux](https://docs.docker.com/install/linux/docker-ce/ubuntu/).
Build the Docker image:
``` Bash
docker build --rm -f "Dockerfile" -t wamr:latest .
```
Run the image in interactive mode:
``` Bash
docker run --rm -it wamr:latest
```
You'll now enter the container at `/root`.
Build WASM app
=========================
You can write a simple ```test.c``` as the first sample.
@ -181,7 +198,7 @@ int main(int argc, char **argv)
}
```
There are two methods to build a WASM binary. One is using Emscripten tool, another is using clang compiler.
There are three methods to build a WASM binary. They are Emscripten, the clang compiler and Docker.
## Use Emscripten tool
@ -242,6 +259,19 @@ clang-8 --target=wasm32 -O3 -Wl,--initial-memory=131072,--allow-undefined,--expo
You will get ```test.wasm``` which is the WASM app binary.
## Using Docker
The last method availble is using [Docker](https://www.docker.com/). We assume you've already configured Docker (see Platform section above) and have a running interactive shell. Currently the Dockerfile only supports compiling apps with clang, with Emscripten planned for the future.
Use the clang-8 command below to build the WASM C source code into the WASM binary.
```Bash
clang-8 --target=wasm32 -O3 -Wl,--initial-memory=131072,--allow-undefined,--export=main,
--no-threads,--strip-all,--no-entry -nostdlib -o test.wasm test.c
```
You will get ```test.wasm``` which is the WASM app binary.
Run WASM app
========================