Install ISPC GitHub Action

Github Action to install ISPC compiler.

Input Variables

• version: Release version of ispc to install (optional).
• platform: Platform to download release of ispc for (optional); one of linux, windows or macOS.
• architecture: Architecture to download release of ispc for (optional).

Examples

Quickstart

Single platform installation of latest ISPC release:

on: push
jobs:
  build:
    runs-on: ubuntu-latest
    name: build
    steps:
    - name: install ISPC
      uses: ispc/install-ispc-action@main

To install specific version of ISPC, provide the version variable:

on: push
jobs:
  build:
    runs-on: ubuntu-latest
    name: build
    steps:
    - name: install ISPC
      uses: ispc/install-ispc-action@main
      with:
        version: 1.22.0

Platform Build Matrix

To install ISPC across platforms, add the platform variable to your build matrix:

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
        - os: ubuntu-latest
          platform: linux

        - os: windows-latest
          platform: windows

        - os: macos-latest
          platform: macOS

    runs-on: ${{ matrix.os }}
    name: build
    steps:
    - name: install ISPC
      uses: ispc/install-ispc-action@main
      with:
        platform: ${{ matrix.platform }}

Self-hosted Runners and Containers

The action is a composite action that runs a Bash script, so it needs these tools on PATH. All of them are preinstalled on GitHub-hosted runners.

• Always: bash, curl and tar.
• When version is empty or latest: jq, and git as a fallback if the GitHub API is unavailable or rate limited.
• When installing a windows release on Linux or macOS: unzip.
• On Windows: Git for Windows, which provides bash.

A missing tool fails the step with install-ispc-action requires '<tool>' on PATH. For example, a job running in a slim ubuntu:24.04 container needs these first:

    - run: apt-get update && apt-get install -y curl ca-certificates jq git

If you can't install these tools, pin the previous Node.js-based version of the action:

    - name: install ISPC
      uses: ispc/install-ispc-action@v1-node