fix: resolve Linux FLAGS symbol conflicts by moving FLAGS_quiet to flags.cc and renaming emulator test flags

- Move FLAGS_quiet definition from cli_main.cc to flags.cc (shared flags location)
- Change FLAGS_quiet in cli_main.cc to ABSL_DECLARE_FLAG (declaration only)
- Rename emu_test.cc FLAGS_rom to FLAGS_emu_test_rom to avoid conflict with shared FLAGS_rom
- Update usage message in emu_test.cc to reflect renamed flag

This fixes multiple definition errors on Linux where FLAGS symbols were defined
in multiple translation units. FLAGS_quiet is now defined once in flags.cc and
declared where needed. The emulator test now uses unique flag names.

Fixes symbol conflicts identified in Windows build handoff analysis.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

cmake/absl.cmake

@@ -38,6 +38,9 @@ if(_yaze_use_fetched_absl)
     set(ABSL_ENABLE_INSTALL OFF CACHE BOOL "" FORCE)
     FetchContent_MakeAvailable(absl)
     message(STATUS "Fetched Abseil ${YAZE_ABSL_GIT_TAG}")
+
+    # NEW: Export source directory for Windows builds that need explicit include paths
+    set(YAZE_ABSL_SOURCE_DIR "${absl_SOURCE_DIR}" CACHE INTERNAL "Abseil source directory")
   endif()
 endif()
 

src/cli/cli_main.cc

@@ -21,7 +21,7 @@
 
 // Define all CLI flags
 ABSL_FLAG(bool, tui, false, "Launch interactive Text User Interface");
-ABSL_FLAG(bool, quiet, false, "Suppress non-essential output");
+ABSL_DECLARE_FLAG(bool, quiet);
 ABSL_FLAG(bool, version, false, "Show version information");
 #ifdef YAZE_HTTP_API_ENABLED
 ABSL_FLAG(int, http_port, 0,

src/cli/flags.cc

@@ -6,6 +6,7 @@ ABSL_FLAG(std::string, rom, "", "Path to the ROM file");
 ABSL_FLAG(bool, mock_rom, false,
           "Use mock ROM mode for testing without requiring an actual ROM file. "
           "Loads all Zelda3 embedded labels but no actual ROM data.");
+ABSL_FLAG(bool, quiet, false, "Suppress non-essential output");
 
 // AI Service Configuration Flags
 ABSL_FLAG(std::string, ai_provider, "auto",

src/emu_test.cc

@@ -17,7 +17,7 @@
 #include "app/emu/snes.h"
 #include "util/log.h"
 
-ABSL_FLAG(std::string, rom, "", "Path to ROM file to test");
+ABSL_FLAG(std::string, emu_test_rom, "", "Path to ROM file to test");
 ABSL_FLAG(int, max_frames, 60, "Maximum frames to run (0 = infinite)");
 ABSL_FLAG(int, log_interval, 10, "Log APU state every N frames");
 ABSL_FLAG(bool, dump_audio, false, "Dump audio output to WAV file");
@@ -208,17 +208,17 @@ int main(int argc, char** argv) {
   absl::ParseCommandLine(argc, argv);
 
   // Configure logging
-  std::string rom_path = absl::GetFlag(FLAGS_rom);
+  std::string rom_path = absl::GetFlag(FLAGS_emu_test_rom);
   int max_frames = absl::GetFlag(FLAGS_max_frames);
   int log_interval = absl::GetFlag(FLAGS_log_interval);
   bool verbose = absl::GetFlag(FLAGS_verbose);
   bool trace_apu = absl::GetFlag(FLAGS_trace_apu);
 
   if (rom_path.empty()) {
-    std::cerr << "Error: --rom flag is required\n";
+    std::cerr << "Error: --emu_test_rom flag is required\n";
-    std::cerr << "Usage: yaze_emu_test --rom=zelda3.sfc [options]\n";
+    std::cerr << "Usage: yaze_emu_test --emu_test_rom=zelda3.sfc [options]\n";
     std::cerr << "\nOptions:\n";
-    std::cerr << "  --rom=PATH          Path to ROM file (required)\n";
+    std::cerr << "  --emu_test_rom=PATH Path to ROM file (required)\n";
     std::cerr << "  --max_frames=N      Run for N frames (0=infinite, "
                  "default=60)\n";
     std::cerr << "  --log_interval=N    Log APU state every N frames "

src/util/util.cmake

@@ -54,23 +54,6 @@ if(YAZE_ENABLE_GRPC)
     absl::strings
     absl::str_format
   )
-
-  # CRITICAL FIX FOR WINDOWS: Explicitly add Abseil include directory
-  # When gRPC bundles Abseil, the include paths don't always propagate correctly
-  # on Windows with Ninja + clang-cl. We need to explicitly add the Abseil source
-  # directory where headers are located.
-  if(WIN32)
-    # Get Abseil source directory from CPM or gRPC fetch
-    if(DEFINED absl_SOURCE_DIR)
-      target_include_directories(yaze_util PUBLIC ${absl_SOURCE_DIR})
-      message(STATUS "Windows: Added explicit Abseil include path: ${absl_SOURCE_DIR}")
-    elseif(DEFINED grpc_SOURCE_DIR AND EXISTS "${grpc_SOURCE_DIR}/third_party/abseil-cpp")
-      target_include_directories(yaze_util PUBLIC "${grpc_SOURCE_DIR}/third_party/abseil-cpp")
-      message(STATUS "Windows: Added explicit Abseil include path from gRPC: ${grpc_SOURCE_DIR}/third_party/abseil-cpp")
-    else()
-      message(WARNING "Windows: Could not find Abseil source directory - build may fail")
-    endif()
-  endif()
 else()
   # Link standalone Abseil targets (configured in cmake/absl.cmake)
   target_link_libraries(yaze_util PUBLIC
@@ -81,6 +64,43 @@ else()
   )
 endif()
 
+# CRITICAL FIX FOR WINDOWS: Explicitly add Abseil include directory
+# Issue: Windows builds with Ninja + clang-cl fail to find Abseil headers even when
+# linking to absl::* targets. This affects BOTH standalone Abseil AND gRPC-bundled Abseil.
+#
+# Root cause: In ci-windows preset, YAZE_ENABLE_GRPC=ON but YAZE_ENABLE_REMOTE_AUTOMATION=OFF,
+# which causes options.cmake to forcibly disable gRPC. This means standalone Abseil is used,
+# but the previous fix only ran when YAZE_ENABLE_GRPC=ON, so it never applied.
+#
+# Solution: Apply include path fix unconditionally on Windows, with multi-source detection:
+# 1. Check YAZE_ABSL_SOURCE_DIR (exported from cmake/absl.cmake for standalone Abseil)
+# 2. Check absl_SOURCE_DIR (direct FetchContent variable)
+# 3. Check grpc_SOURCE_DIR/third_party/abseil-cpp (gRPC-bundled Abseil)
+if(WIN32)
+  set(_absl_include_found FALSE)
+
+  # Priority 1: Check YAZE_ABSL_SOURCE_DIR (exported by cmake/absl.cmake)
+  if(DEFINED YAZE_ABSL_SOURCE_DIR AND EXISTS "${YAZE_ABSL_SOURCE_DIR}")
+    target_include_directories(yaze_util PUBLIC ${YAZE_ABSL_SOURCE_DIR})
+    message(STATUS "Windows: Added explicit Abseil include path (standalone): ${YAZE_ABSL_SOURCE_DIR}")
+    set(_absl_include_found TRUE)
+  # Priority 2: Check absl_SOURCE_DIR (direct FetchContent variable)
+  elseif(DEFINED absl_SOURCE_DIR AND EXISTS "${absl_SOURCE_DIR}")
+    target_include_directories(yaze_util PUBLIC ${absl_SOURCE_DIR})
+    message(STATUS "Windows: Added explicit Abseil include path (FetchContent): ${absl_SOURCE_DIR}")
+    set(_absl_include_found TRUE)
+  # Priority 3: Check gRPC-bundled Abseil
+  elseif(DEFINED grpc_SOURCE_DIR AND EXISTS "${grpc_SOURCE_DIR}/third_party/abseil-cpp")
+    target_include_directories(yaze_util PUBLIC "${grpc_SOURCE_DIR}/third_party/abseil-cpp")
+    message(STATUS "Windows: Added explicit Abseil include path (gRPC-bundled): ${grpc_SOURCE_DIR}/third_party/abseil-cpp")
+    set(_absl_include_found TRUE)
+  endif()
+
+  if(NOT _absl_include_found)
+    message(WARNING "Windows: Could not find Abseil source directory - build may fail with 'absl/status/statusor.h' not found")
+  endif()
+endif()
+
 set_target_properties(yaze_util PROPERTIES
   POSITION_INDEPENDENT_CODE ON
   ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib"