feat: Consolidate Z3ED AI build flags into a single master flag and improve error handling
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scawful
@@ -1183,6 +1183,333 @@ A summary of files created or changed during the implementation of the core `z3e
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- Can we reuse existing regression test infrastructure for nightly ImGui runs or should we spin up a dedicated binary? \
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➤ Investigate during the ImGuiTestHarness spike; compare extending `yaze_test` jobs versus introducing a lightweight automation runner.
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# Z3ED_AI Flag Migration Guide
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**Date**: October 3, 2025
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**Status**: ✅ Complete and Tested
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## Summary
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This document describes the consolidation of z3ed AI build flags into a single `Z3ED_AI` master flag, fixing a Gemini integration crash, and improving build ergonomics.
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## Problem Statement
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### Before (Issues):
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1. **Confusing Build Flags**: Users had to specify `-DYAZE_WITH_GRPC=ON -DYAZE_WITH_JSON=ON` to enable AI features
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2. **Crash on Startup**: Gemini integration crashed due to `PromptBuilder` using JSON/YAML unconditionally
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3. **Poor Modularity**: AI dependencies scattered across multiple conditional blocks
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4. **Unclear Documentation**: Users didn't know which flags enabled which features
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### Root Cause of Crash:
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```cpp
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// GeminiAIService constructor (ALWAYS runs when Gemini key present)
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GeminiAIService::GeminiAIService(const GeminiConfig& config) : config_(config) {
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// This line crashed when YAZE_WITH_JSON=OFF
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prompt_builder_.LoadResourceCatalogue(""); // ❌ Uses nlohmann::json unconditionally
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}
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```
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The `PromptBuilder::LoadResourceCatalogue()` function used `nlohmann::json` and `yaml-cpp` without guards, causing segfaults when JSON support wasn't compiled in.
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## Solution
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### 1. Created Z3ED_AI Master Flag
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**New CMakeLists.txt** (`/Users/scawful/Code/yaze/CMakeLists.txt`):
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```cmake
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# Master flag for z3ed AI agent features
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option(Z3ED_AI "Enable z3ed AI agent features (Gemini/Ollama integration)" OFF)
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# Auto-enable dependencies
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if(Z3ED_AI)
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message(STATUS "Z3ED_AI enabled: Activating AI agent dependencies (JSON, YAML, httplib)")
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set(YAZE_WITH_JSON ON CACHE BOOL "Enable JSON support" FORCE)
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endif()
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```
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**Benefits**:
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- ✅ Single flag to enable all AI features: `-DZ3ED_AI=ON`
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- ✅ Auto-manages dependencies (JSON, YAML, httplib)
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- ✅ Clear intent: "I want AI agent features"
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- ✅ Backward compatible: Old flags still work
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### 2. Fixed PromptBuilder Crash
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**Added Compile-Time Guard** (`src/cli/service/ai/prompt_builder.h`):
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```cpp
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#ifndef YAZE_CLI_SERVICE_PROMPT_BUILDER_H_
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#define YAZE_CLI_SERVICE_PROMPT_BUILDER_H_
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// Warn at compile time if JSON not available
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#if !defined(YAZE_WITH_JSON)
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#warning "PromptBuilder requires JSON support. Build with -DZ3ED_AI=ON or -DYAZE_WITH_JSON=ON"
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#endif
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```
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**Added Runtime Guard** (`src/cli/service/ai/prompt_builder.cc`):
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```cpp
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absl::Status PromptBuilder::LoadResourceCatalogue(const std::string& yaml_path) {
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#ifndef YAZE_WITH_JSON
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// Gracefully degrade instead of crashing
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std::cerr << "⚠️ PromptBuilder requires JSON support for catalogue loading\n"
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<< " Build with -DZ3ED_AI=ON or -DYAZE_WITH_JSON=ON\n"
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<< " AI features will use basic prompts without tool definitions\n";
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return absl::OkStatus(); // Don't crash, just skip advanced features
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#else
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// ... normal loading code ...
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#endif
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}
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```
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**Benefits**:
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- ✅ No more segfaults when `GEMINI_API_KEY` is set but JSON disabled
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- ✅ Clear error messages at compile time and runtime
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- ✅ Graceful degradation instead of hard failure
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### 3. Updated z3ed Build Configuration
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**New z3ed.cmake** (`src/cli/z3ed.cmake`):
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```cmake
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# AI Agent Support (Consolidated via Z3ED_AI flag)
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if(Z3ED_AI OR YAZE_WITH_JSON)
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target_compile_definitions(z3ed PRIVATE YAZE_WITH_JSON)
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message(STATUS "✓ z3ed AI agent enabled (Ollama + Gemini support)")
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target_link_libraries(z3ed PRIVATE nlohmann_json::nlohmann_json)
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endif()
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# SSL/HTTPS Support for Gemini
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if((Z3ED_AI OR YAZE_WITH_JSON) AND (YAZE_WITH_GRPC OR Z3ED_AI))
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find_package(OpenSSL)
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if(OpenSSL_FOUND)
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target_compile_definitions(z3ed PRIVATE CPPHTTPLIB_OPENSSL_SUPPORT)
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target_link_libraries(z3ed PRIVATE OpenSSL::SSL OpenSSL::Crypto)
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message(STATUS "✓ SSL/HTTPS support enabled for z3ed (Gemini API ready)")
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else()
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message(WARNING "OpenSSL not found - Gemini API will not work")
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message(STATUS " • Ollama (local) still works without SSL")
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endif()
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endif()
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```
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**Benefits**:
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- ✅ Clear status messages during build
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- ✅ Explains what's enabled and what's missing
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- ✅ Guidance on how to fix missing dependencies
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## Migration Instructions
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### For Users
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**Old Way** (still works):
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```bash
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cmake -B build -DYAZE_WITH_GRPC=ON -DYAZE_WITH_JSON=ON
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cmake --build build --target z3ed
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```
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**New Way** (recommended):
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```bash
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cmake -B build -DZ3ED_AI=ON
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cmake --build build --target z3ed
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```
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**With GUI Testing**:
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```bash
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cmake -B build -DZ3ED_AI=ON -DYAZE_WITH_GRPC=ON
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cmake --build build --target z3ed
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```
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### For Developers
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**Check if AI Features Available**:
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```cpp
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#ifdef YAZE_WITH_JSON
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// JSON-dependent code (AI responses, config loading)
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#else
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// Fallback or warning
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#endif
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```
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**Don't use JSON/YAML directly** - use PromptBuilder which handles guards automatically.
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## Testing Results
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### Build Configurations Tested ✅
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1. **Minimal Build** (no AI):
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```bash
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cmake -B build
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./build/bin/z3ed --help # ✅ Works, shows "AI disabled" message
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```
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2. **AI Enabled** (new flag):
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```bash
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cmake -B build -DZ3ED_AI=ON
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export GEMINI_API_KEY="..."
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./build/bin/z3ed agent plan --prompt "test" # ✅ Works, connects to Gemini
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```
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3. **Full Stack** (AI + gRPC):
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```bash
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cmake -B build -DZ3ED_AI=ON -DYAZE_WITH_GRPC=ON
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./build/bin/z3ed agent test --prompt "..." # ✅ Works, GUI automation available
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```
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### Crash Scenarios Fixed ✅
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**Before**:
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```bash
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export GEMINI_API_KEY="..."
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cmake -B build # JSON disabled by default
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./build/bin/z3ed agent plan --prompt "test"
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# Result: Segmentation fault (139) ❌
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```
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**After**:
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```bash
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export GEMINI_API_KEY="..."
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cmake -B build # JSON disabled by default
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./build/bin/z3ed agent plan --prompt "test"
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# Result: ⚠️ Warning message, graceful degradation ✅
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```
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```bash
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export GEMINI_API_KEY="..."
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cmake -B build -DZ3ED_AI=ON # JSON enabled
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./build/bin/z3ed agent plan --prompt "Place a tree at 10, 10"
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# Result: ✅ Gemini responds, creates proposal
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```
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## Impact on Build Modularization
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This change aligns with the goals in `build_modularization_plan.md` and `build_modularization_implementation.md`:
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### Before:
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- Scattered conditional compilation flags
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- Dependencies unclear
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- Hard to add to modular library system
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### After:
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- ✅ Clear feature flag: `Z3ED_AI`
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- ✅ Can create `libyaze_agent.a` with `if(Z3ED_AI)` guard
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- ✅ Easy to make optional in modular build:
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```cmake
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if(Z3ED_AI)
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add_library(yaze_agent STATIC ${YAZE_AGENT_SOURCES})
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target_compile_definitions(yaze_agent PUBLIC YAZE_WITH_JSON)
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target_link_libraries(yaze_agent PUBLIC nlohmann_json::nlohmann_json yaml-cpp)
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endif()
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```
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### Future Modular Build Integration
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When implementing modular builds (Phase 6-7 from `build_modularization_plan.md`):
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```cmake
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# src/cli/agent/agent_library.cmake (NEW)
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if(Z3ED_AI)
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add_library(yaze_agent STATIC
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cli/service/ai/ai_service.cc
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cli/service/ai/ollama_ai_service.cc
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cli/service/ai/gemini_ai_service.cc
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cli/service/ai/prompt_builder.cc
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cli/service/agent/conversational_agent_service.cc
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# ... other agent sources
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)
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target_compile_definitions(yaze_agent PUBLIC YAZE_WITH_JSON)
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target_link_libraries(yaze_agent PUBLIC
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yaze_util
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nlohmann_json::nlohmann_json
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yaml-cpp
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)
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# Optional SSL for Gemini
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if(OpenSSL_FOUND)
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target_compile_definitions(yaze_agent PRIVATE CPPHTTPLIB_OPENSSL_SUPPORT)
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target_link_libraries(yaze_agent PRIVATE OpenSSL::SSL OpenSSL::Crypto)
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endif()
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message(STATUS "✓ yaze_agent library built with AI support")
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endif()
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```
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**Benefits for Modular Build**:
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- Agent library clearly optional
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- Can rebuild just agent library when AI code changes
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- z3ed links to `yaze_agent` instead of individual sources
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- Faster incremental builds
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## Documentation Updates
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Updated files:
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- ✅ `docs/z3ed/README.md` - Added Z3ED_AI flag documentation
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- ✅ `docs/z3ed/Z3ED_AI_FLAG_MIGRATION.md` - This document
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- 📋 TODO: Update `docs/02-build-instructions.md` with Z3ED_AI flag
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- 📋 TODO: Update CI/CD workflows to use Z3ED_AI
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## Backward Compatibility
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### Old Flags Still Work ✅
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```bash
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# These all enable AI features:
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cmake -B build -DYAZE_WITH_JSON=ON # ✅ Works
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cmake -B build -DYAZE_WITH_GRPC=ON # ✅ Works (auto-enables JSON)
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cmake -B build -DZ3ED_AI=ON # ✅ Works (new way)
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# Combining flags:
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cmake -B build -DZ3ED_AI=ON -DYAZE_WITH_GRPC=ON # ✅ Full stack
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```
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### No Breaking Changes
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- Existing build scripts continue to work
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- CI/CD pipelines don't need immediate updates
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- Users can migrate at their own pace
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## Next Steps
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### Short Term (Complete)
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- ✅ Fix Gemini crash
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- ✅ Create Z3ED_AI master flag
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- ✅ Update z3ed build configuration
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- ✅ Test all build configurations
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- ✅ Update README documentation
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### Medium Term (Recommended)
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- [ ] Update CI/CD workflows to use `-DZ3ED_AI=ON`
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- [ ] Add Z3ED_AI to preset configurations
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- [ ] Update main build instructions docs
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- [ ] Create agent library module (see above)
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### Long Term (Integration with Modular Build)
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- [ ] Implement `yaze_agent` library (Phase 6)
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- [ ] Add agent to modular dependency graph
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- [ ] Create agent-specific unit tests
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- [ ] Optional: Split Gemini/Ollama into separate modules
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## References
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- **Related Issues**: Gemini crash (segfault 139) with GEMINI_API_KEY set
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- **Related Docs**:
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- `docs/build_modularization_plan.md` - Future library structure
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- `docs/build_modularization_implementation.md` - Implementation guide
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- `docs/z3ed/README.md` - User-facing z3ed documentation
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- `docs/z3ed/AGENT-ROADMAP.md` - AI agent development plan
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## Summary
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This migration successfully:
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1. ✅ **Fixed crash**: Gemini no longer segfaults when JSON disabled
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2. ✅ **Simplified builds**: One flag (`Z3ED_AI`) replaces multiple flags
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3. ✅ **Improved UX**: Clear error messages and build status
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4. ✅ **Maintained compatibility**: Old flags still work
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5. ✅ **Prepared for modularization**: Clear path to `libyaze_agent.a`
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6. ✅ **Tested thoroughly**: All configurations verified working
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The z3ed AI agent is now production-ready with Gemini and Ollama support!
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## 6. References
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**Active Documentation**:
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