Learn ADA-SPARK with Real Code Examples
Updated Nov 27, 2025
Installation Setup
Install GNAT Community or GNAT Pro
Install SPARK toolset with GNATprove
Set PATH for gnat and gprbuild
Configure project file (.gpr)
Enable SPARK_Mode pragma or project-level setting
Environment Setup
Install AdaCore GNAT
Install GNATprove
Set SPARK_Mode
Configure gprbuild
Enable embedded toolchain
Config Files
*.gpr project file
*.ads spec files
*.adb body files
*.sparkconfig (optional)
*.spark.out proof reports
Cli Commands
gnatprove - run proofs
gprbuild - build project
gnatpp - pretty printer
greetest - test builder
alr - package management (Alire)
Internationalization
Ada supports Unicode identifiers
Comments allow any language
Portable across compilers
Used worldwide in defense industries
Cross-region aerospace compliance
Accessibility
Readable structured syntax
Strong documentation culture
High visibility of contracts
Clear separation of spec/body
Well-commented invariants
Ui Styling
Not applicable; SPARK is backend/embedded
Console or telemetry outputs only
Formal layout of packages
Consistent naming and specs
Formatting via gnatpp
State Management
Static variable initialization
Global/Depends contracts
Proof-backed state transitions
Pure deterministic updates
Restricted aliasing
Data Management
Subtype constraints
Static arrays
Verified ADTs
Range-limited values
Pure-function transformations