Delphi Build Server

Instructions

Implementation Reference

• src/server.ts:179-194 (handler)

  Core handler function that validates the Lazarus project (.lpi), constructs lazbuild arguments, and executes the build command.

  async function lazarusBuild({ project, buildMode, cpu, os, lazbuildPath }: { project: string; buildMode?: string; cpu?: string; os?: string; lazbuildPath?: string; }) {
    const projPath = resolve(project);
    if (!existsSync(projPath)) {
      throw new Error(`Project not found: ${projPath}`);
    }
    if (!isLazarusProject(projPath)) {
      throw new Error('Unsupported project type. Provide a .lpi file');
    }
    const args: string[] = ['--build-mode='];
    if (buildMode) args[0] = `--build-mode=${buildMode}`; else args.pop();
    if (cpu) args.push(`--cpu=${cpu}`);
    if (os) args.push(`--os=${os}`);
    args.push('"' + projPath + '"');
    const lazbuild = lazbuildPath || 'lazbuild';
    return await runCommand(lazbuild, args, { cwd: dirname(projPath) });
  }

• src/server.ts:56-62 (schema)

  Input schema definition using Zod for validating parameters to the lazarus.build tool.

  const LazarusBuildInput = {
    project: z.string().describe('Path to a Lazarus project file (.lpi)'),
    buildMode: z.string().optional().describe('Lazarus build mode name (maps to --bm)'),
    cpu: z.string().optional().describe('Target CPU for lazbuild (e.g. x86_64, i386, aarch64)'),
    os: z.string().optional().describe('Target OS for lazbuild (e.g. win64, win32, linux)'),
    lazbuildPath: z.string().optional().describe('Path to lazbuild (defaults to "lazbuild")')
  };

• src/server.ts:269-284 (registration)

  Registration of the 'lazarus.build' tool with MCP server, including description, schema, and thin wrapper handler that calls lazarusBuild and formats MCP response.

  mcpServer.registerTool('lazarus.build', {
    description: 'Build a Lazarus (.lpi) project using lazbuild',
    inputSchema: LazarusBuildInput,
  }, async (req: any) => {
    const { code, stdout, stderr } = await lazarusBuild(req);
    const ok = code === 0;
    return {
      content: [
        { type: 'text', text: ok ? `Lazarus build succeeded for ${basename(req.project)}` : `Lazarus build failed for ${basename(req.project)}` },
        { type: 'text', text: `Exit code: ${code}` },
        { type: 'text', text: '--- STDOUT ---\n' + stdout },
        { type: 'text', text: '--- STDERR ---\n' + stderr }
      ],
      isError: !ok
    };
  });

• src/server.ts:175-177 (helper)

  Helper function to check if a file is a Lazarus project file (.lpi), used in lazarusBuild validation.

  function isLazarusProject(file: string) {
    return extname(file).toLowerCase() === '.lpi';
  }