Advanced Debugging Techniques Using DCompiler

How to Set Up Continuous Integration for D Projects with DCompiler

This guide shows a practical, end-to-end CI setup for D language projects using DCompiler. It assumes a typical D project layout (source in src/, tests in tests/, dub or custom build) and provides CI examples for GitHub Actions and GitLab CI. Adjust commands and paths to match your repository.

Prerequisites

• A D project repository with DCompiler-compatible build scripts or a dub.json/dub.sdl if using DUB wrapper.
• DCompiler available via package manager or downloadable binary.
• CI provider account (examples use GitHub Actions and GitLab CI).

1. Project layout (assumed)

• src/ — source files
• tests/ — unit/integration tests
• ci/ — optional CI scripts
• DCompiler configuration or build script at project root (e.g., dcompiler.json or Makefile)

2. Build and test commands

Use these as defaults; adapt if your project differs.

• Install DCompiler (example path or package manager)
• Build:

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  dcompiler build –project . 

• Run tests:

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  dcompiler test –project . –report junit 

• Run lint/format (optional):

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  dcompiler lint –project . dcompiler fmt –check 

3. GitHub Actions workflow

Create .github/workflows/ci.yml:

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name: CI 
on:push:

 
branches: [ main, master ] 
pull_request:
branches: [ main, master ] 
jobs:   build-test:
runs-on: ubuntu-latest strategy:   matrix:     d-version: [stable, latest]   # adjust to versions supported by DCompiler     os: [ubuntu-latest] steps:   - uses: actions/checkout@v4   - name: Install prerequisites     run: |       sudo apt-get update       sudo apt-get install -y curl ca-certificates   - name: Install DCompiler     run: |       curl -fsSL https://example.com/dcompiler/install.sh | bash       dcompiler --version   - name: Build     run: dcompiler build --project .   - name: Run tests     run: dcompiler test --project . --report junit     continue-on-error: false   - name: Upload test results     uses: actions/upload-artifact@v4     with:       name: junit-results       path: test-results/*.xml 


Notes:

Replace the Install DCompiler step with the official install method or a package manager command.
Ensure test reporting path matches dcompiler’s output.

4. GitLab CI configuration
Create .gitlab-ci.yml:
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stages:   - build

 

test

 
variables:   DCOMPILER_VERSION: “latest”
 
before_script:
 

apt-get update -y
apt-get install -y curl ca-certificates
curl -fsSL https://example.com/dcompiler/install.sh | bash
dcompiler –version

 
build:   stage: build   image: ubuntu:22.04   script:
 
- dcompiler build --project . 
artifacts:
paths:   - build/ 
test:   stage: test   image: ubuntu:22.04   script:
- dcompiler test --project . --report junit 
artifacts:
when: always reports:   junit: test-results/*.xml paths:   - test-results/ 


5. Caching dependencies
Reduce CI time by caching build artifacts or package caches.
GitHub Actions example (add to steps):
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- name: Cache DCompiler artifacts   uses: actions/cache@v4   with:

 
path: |   ~/.dcompiler/cache   build/ key: ${{ runner.os }}-dcompiler-${{ hashFiles('**/dcompiler.lock') }} restore-keys: |   ${{ runner.os }}-dcompiler- 


GitLab CI example (add to job):
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cache:   key: “${CI_COMMIT_REF_SLUG}”   paths:

 
- .dcompiler/cache/ - build/ 


6. Test reporting and artifact handling

Configure DCompiler to output JUnit XML to a known directory (e.g., test-results/).
Use CI provider test-report features to display failing tests.
Upload build artifacts (binaries) when useful (release pipelines).

7. Security and secrets

Store credentials (e.g., package registry tokens) in CI secrets and reference them as environment variables.
Avoid printing sensitive values in logs.
Pin DCompiler installer hashes or use signed releases to prevent supply-chain attacks.

8. Optional: Matrix for multiple D versions and OSes
Example matrix entries for GitHub Actions (add to strategy.matrix):

d-version: [2.095, 2.094, stable]
os: [ubuntu-latest, macos-latest]

Adjust install steps per OS (brew on macOS, appropriate package on Windows or use actions/setup-dotnet-like action if available for DCompiler).
9. Troubleshooting tips

If build fails, run dcompiler with verbose logging: dcompiler build –project . –verbose
For flaky tests, isolate and re-run only failed tests: dcompiler test –filter 
Ensure CI runner has necessary native libs for linking; install via apt-get.

10. Example minimal checklist before enabling CI

Confirm dcompiler build/test commands work locally.
Add dcompiler test report output to test-results/.
Commit CI config files (.github/workflows/ci.yml or .gitlab-ci.yml).
Add caching for speed.
Add secret variables if publishing artifacts.

If you want, I can generate a ready-to-commit workflow file customized to your repo (specify OS targets and whether you use DUB).