Simplify build process: No more docker; GH Actions instead of CircleCI

Author: rleh

.circleci/config.yml

@@ -0,0 +1,74 @@
+name: Build RISC-V GCC
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  build-risc-v-gcc:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Install dependencies
+        run: |
+         sudo apt-get update
+         sudo apt-get upgrade -y
+         sudo apt-get install -y autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev git
+
+      - name: Clone riscv/riscv-gnu-toolchain
+        run: |
+         git clone --recursive --jobs 16 --quiet https://github.com/riscv/riscv-gnu-toolchain
+
+      - name: Configure
+        run: |
+         cd riscv-gnu-toolchain
+         ./configure --prefix=/opt/modm-riscv-gcc --enable-multilib
+
+      - name: Build
+        run: |
+         cd riscv-gnu-toolchain
+         make -j8
+
+      - name: Compiling test files
+        run: |
+         /opt/modm-riscv-gcc/bin/riscv64-unknown-elf-g++ --version
+         echo "int main() { return 0;}" > main1.cpp
+         /opt/modm-riscv-gcc/bin/riscv64-unknown-elf-g++ main1.cpp
+
+      #- name: Fake toolchain
+      #  run: |
+      #   mkdir -p /opt/riscv-gcc/bin
+      #   cp $(which true) /opt/riscv-gcc/bin/riscv64-unknown-elf-g++
+
+      - name: Create tarball
+        run: |
+         tar cjf modm-riscv-gcc.tar.bz2 -C /opt modm-riscv-gcc
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: modm-riscv-gcc
+          path: modm-riscv-gcc.tar.bz2
+
+      - name: Create release
+        if: startsWith(github.ref, 'refs/tags/')
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: RISC-V GCC ${{ github.ref }}
+          draft: false
+          prerelease: false
+
+      - name: Upload release asset
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./modm-riscv-gcc.tar.bz2
+          asset_name: modm-riscv-gcc.tar.bz2
+          asset_content_type: application/x-bzip2

.github/workflows/build-risc-v-gcc.yml

@@ -1,10 +1,8 @@
 # Up-to-date RISC-V GNU GCC Toolchain from source
 
-[![CircleCI](https://circleci.com/gh/modm-ext/riscv-gcc.svg?style=svg)](https://circleci.com/gh/modm-ext/riscv-gcc)
-
 ## Installation
 
-Download the latest `modm-riscv-gcc.tar.bz2` from [Releases](https://github.com/modm-ext/docker-riscv-gcc/releases)
+Download the latest `modm-riscv-gcc.tar.bz2` from [Releases](https://github.com/modm-io/riscv-gcc/releases)
 and unpack it to `/opt`:
 
 ```sh
@@ -18,40 +16,14 @@ e.g. by adding the following line to your `~/.bashrc` file:
 export PATH="/opt/modm-riscv-gcc/bin:$PATH"
 ```
 
-## Building locally with Docker
-
-There is a Docker image with all prerequisites for building, created from the `Dockerfile` in this repository.
-Pull and start the image from Dockerhub with:
-
-```sh
-docker run -it modm/riscv-gcc-prerequisites
-```
-
-Or build the image from the local `Dockerfile` and start it:
-
-```sh
-docker build --tag riscv-gcc-prerequisites:local .
-docker run -it riscv-gcc-prerequisites:local
-```
-
-Inside the Docker container get this repository
+## Building local
 
-```sh
-git clone https://github.com/modm-ext/docker-riscv-gcc.git
-```
+The build script is written for Ubuntu 20.04.
 
-Run the build.sh script
+Just run the build.sh script:
 
 ```sh
-cd docker-riscv-gcc
-time ./build.sh
+./build.sh
 ```
 
 The toolchain will be in `/opt/modm-riscv-gcc`.
-
-## Building in CircleCI
-
-There is a CircleCI job defined in `.circleci/config.yml` which builds the
-toolchain using the Docker container. For tagged commits, a Github release
-will be created with the toolchain put into a downloadable `.tar.bz2` at
-[Releases](https://github.com/modm-ext/docker-riscv-gcc/releases).

Dockerfile

@@ -1,5 +1,10 @@
 #!/usr/bin/env bash
 
+# Install dependencies
+sudo apt-get update
+sudo apt-get upgrade -y
+sudo apt-get install -y autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev git
+
 # Get sources
 git clone --recursive https://github.com/riscv/riscv-gnu-toolchain
 cd riscv-gnu-toolchain