Here, the usage notes from UnitCircularReferencesFree.pas.
// Usage of UCR framework means to move unit initialization/finalization
// code to a function and let UCR check the dependencies.
// Adjust the behaviour with configurations:
// 'Config_Disable', 'Config_NoLog', 'Config_RaiseErr',
// or 'Config_ContinueAsOptimisticAsDelphiCompiler'.
// See the usage hints below.
// For 'AfterInitialize' see 'UnitCircularReferencesFree.pas'.
// It could be ignored or call it to free the resources:
// 'array[number of units] of TUCRClass', 'array of Status',
// and 'TList' for all not initialized units (circular references).
// AfterInitialize should be the initialized last - last unit in the project.
// (Alternative, a unit which uses all other units will be initialized last).
And output from the demo console app:
UnitCircularReferences: initialization
UnitCircularReferences: Dependencies
UnitCircularReferences: DoInitialize
UnitCCC: initialization
UnitBB: initialization
UnitA: initialization by UnitBB
UnitBB: initialization by UnitA
UnitA: Circular reference UnitBB from/to UnitA.
UnitBB: Added InitRequest for UnitA
UnitA: Added InitRequest for UnitBB
UnitA: initialization
UnitBB: Circular reference UnitA from/to UnitBB.
UnitCircularReferences: Not initialized - UnitBB and 1 dependant units: UnitA,
UnitCircularReferences: Not initialized - UnitA and 1 dependant units: UnitBB,
Done.
UnitA: finalization
UnitA: Not initialized.
UnitBB: finalization
UnitBB: Not initialized.
UnitCCC: finalization
UnitCCC: Not initialized.
UnitCircularReferences: finalization
UnitCircularReferences: Not initialized.