GPR2 Library Reference

Version 27.0w

Date: Jun 05, 2026

Contents:

• Overview
  • Core capabilities
  • Design principles
  • Package naming
  • Key packages at a glance
• Loading a Project
  • Using GPR2.Options
  • Integrating with GNATCOLL.Opt_Parse
  • Load parameters
• Views
  • Project kinds
  • Accessing views
  • Iterating the tree
  • Navigating from a view
  • View properties
  • Aggregate projects and namespace roots
  • Commonly used view API
• Attributes
  • Attribute registry
  • Standard attribute constants
  • Reading attributes from a view
  • Single vs. list attributes
  • Indexed attributes
  • Attribute metadata
• Sources and Units
  • Populating source information
  • The Source object
  • Iterating sources
  • Compilation units
  • Iterating units
  • Ada closure
• Reporter
  • Built-in reporters
  • Installing a reporter
  • Verbosity levels
  • Reporting messages manually
  • The Message type
  • Writing a custom reporter
• Custom Incremental Builder
  • Overview
  • The build database
  • Populating the standard action graph
  • Executing the graph
  • Actions
  • Artifacts
  • Implementing a custom action
• GNU Free Documentation License