4. Source packages

• 4.1. Standards conformance
• 4.2. Package relationships
• 4.3. Changes to the upstream sources
• 4.4. Debian changelog: debian/changelog
• 4.5. Copyright: debian/copyright
• 4.6. Error trapping in makefiles
• 4.7. Time Stamps
• 4.8. Restrictions on objects in source packages
• 4.9. Main building script: debian/rules
• 4.10. Variable substitutions: debian/substvars
• 4.11. Optional upstream source location: debian/watch
• 4.12. Generated files list: debian/files
• 4.13. Embedded code copies
• 4.14. Source package handling: debian/README.source
• 4.15. Reproducibility
• 4.16. Missing sources: debian/missing-sources
• 4.17. Vendor-specific patch series