PHASE3_STATUS.md

# Phase 3 Status Report

**Date:** 2026-02-06  
**Status:** ✅ Build Infrastructure Complete - Ready for Implementation

## Summary

Phase 3 build infrastructure has been successfully created and verified. All compilation scripts are working, and tests can be compiled and run.

## Completed Work

### ✅ Build Infrastructure
- **Compilation Scripts Created**:
  - `liboctave/array/compile_phase3_test.sh` - Compiles individual test files
  - `liboctave/array/compile_all_phase3_tests.sh` - Compiles all Phase 3 tests
- **Build Switch**: Uses `--enable-gpl-replacement` (same as Phase 2)
- **Documentation**: Created `PHASE3_BUILD_INFRASTRUCTURE.md`

### ✅ Test Compilation Verified
- **Test File**: `test-array-base-complete.cc`
- **Status**: ✅ Compiles successfully
- **Status**: ✅ Runs successfully (tests passing)
- **Libraries Linked**: array, numeric, system, util, wrappers, gnu

### ✅ Plan Documentation Updated
- Updated `GPL_COMPLETE_REPLACEMENT_PLAN.md` with Phase 3 build infrastructure details
- Created comprehensive build infrastructure documentation

## Test Files

Phase 3 has 4 comprehensive test files ready for compilation:

1. ✅ `test-array-base-complete.cc` - **Verified working**
2. ⏳ `test-matrix-operations-complete.cc` - Ready to compile
3. ⏳ `test-matrix-decompositions-complete.cc` - Ready to compile
4. ⏳ `test-array-specializations-complete.cc` - Ready to compile

## Build Structure

```
liboctave/array/
├── compile_phase3_test.sh          ✅ Created
├── compile_all_phase3_tests.sh    ✅ Created
├── test-array-base-complete.cc     ✅ Verified
├── test-matrix-operations-complete.cc
├── test-matrix-decompositions-complete.cc
├── test-array-specializations-complete.cc
└── phase3_compilation_results_*/  (created when running compile_all)
```

## Next Steps

1. ✅ Build infrastructure complete
2. ⏳ Compile and verify all 4 test files
3. ⏳ Run all tests to establish baseline
4. ⏳ Begin implementation of proprietary replacements

## Build Switch

Phase 3 uses the same build switch as Phase 2:
- **Configure**: `./configure --enable-gpl-replacement`
- **Macro**: `OCTAVE_USE_GPL_REPLACEMENT`
- **Purpose**: Enables proprietary implementations and test compilation

## Dependencies

Phase 3 tests require:
- `libarray.a` - Array library (Phase 3)
- `libnumeric.a` - Numeric library (Phase 4, but needed for math functions)
- `libutil.a` - Utility library (Phase 2)
- `libsystem.a` - System library (Phase 2)
- `libwrappers.a` - Wrapper library
- `libgnu.a` - GNU library
- External: openblas, gfortran, readline, LLVM-20, pthread, m, openmp

## Notes

- Phase 3 tests follow the same pattern as Phase 2 for consistency
- Tests are compiled standalone (not integrated into module.mk)
- Build infrastructure is complete and verified
- Ready to proceed with implementation phase