Merge pull request #435 from RunanywhereAI/shubham/upgrade-cpp

sanchitmonga22 · web-flow · commit 40868b79e957 · 2026-03-01T19:33:06.000-08:00
upgrading cpp
diff --git a/Playground/README.md b/Playground/README.md
@@ -42,7 +42,7 @@ A complete on-device voice AI pipeline for Linux (Raspberry Pi 5, x86_64, ARM64)
 - **Large Language Model** — Qwen2.5 0.5B Q4 via llama.cpp (fully local)
 - **Text-to-Speech** — Piper Lessac Medium neural TTS
 
-**Requirements:** Linux (ALSA), x86_64 or ARM64, CMake 3.16+, C++17
+**Requirements:** Linux (ALSA), x86_64 or ARM64, CMake 3.16+, C++20
 
 ## swift-starter-app
 
@@ -94,4 +94,4 @@ A hybrid voice assistant that combines on-device AI inference with cloud LLM rea
 - **Barge-in Support** — Wake word during TTS playback cancels speech and re-listens
 - **Waiting Chime** — Earcon feedback while waiting for cloud response
 
-**Requirements:** Linux (ALSA), x86_64 or ARM64, CMake 3.16+, C++17
+**Requirements:** Linux (ALSA), x86_64 or ARM64, CMake 3.16+, C++20
diff --git a/Playground/linux-voice-assistant/CMakeLists.txt b/Playground/linux-voice-assistant/CMakeLists.txt
@@ -31,7 +31,7 @@ project(linux-voice-assistant
     DESCRIPTION "Linux Voice Assistant using RunAnywhere Commons"
 )
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # =============================================================================
diff --git a/Playground/linux-voice-assistant/README.md b/Playground/linux-voice-assistant/README.md
@@ -56,7 +56,7 @@ linux-voice-assistant/
 
 - Linux (Raspberry Pi 5, Ubuntu, Debian, etc.)
 - CMake 3.16+
-- C++17 compiler (g++ or clang++)
+- C++20 compiler (g++ or clang++)
 - ALSA development headers: `sudo apt install libasound2-dev`
 
 ### Build and Run
diff --git a/Playground/openclaw-hybrid-assistant/CMakeLists.txt b/Playground/openclaw-hybrid-assistant/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.16)
 project(openclaw-hybrid-assistant VERSION 0.1.0 LANGUAGES CXX)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # =============================================================================
diff --git a/sdk/runanywhere-commons/.clang-format b/sdk/runanywhere-commons/.clang-format
@@ -90,7 +90,7 @@ SpacesInSquareBrackets: false
 
 # C/C++ specific
 Language: Cpp
-Standard: c++17
+Standard: c++20
 
 # Penalties (for line breaking decisions)
 PenaltyBreakBeforeFirstCallParameter: 19
diff --git a/sdk/runanywhere-commons/CLAUDE.md b/sdk/runanywhere-commons/CLAUDE.md
@@ -11,7 +11,7 @@
 
 ## C++ Specific Rules
 
-- C++17 standard required
+- C++20 standard required
 - Google C++ Style Guide with project customizations (see `.clang-format`)
 - Run `./scripts/lint-cpp.sh` before committing
 - Use `./scripts/lint-cpp.sh --fix` to auto-fix formatting issues
diff --git a/sdk/runanywhere-commons/CMakeLists.txt b/sdk/runanywhere-commons/CMakeLists.txt
@@ -46,7 +46,7 @@ option(RAC_BUILD_SERVER "Build OpenAI-compatible HTTP server (runanywhere-server
 # C++ CONFIGURATION
 # =============================================================================
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
@@ -434,7 +434,7 @@ if(RAC_PLATFORM_ANDROID)
 endif()
 
 set_target_properties(rac_commons PROPERTIES
-    CXX_STANDARD 17
+    CXX_STANDARD 20
     CXX_STANDARD_REQUIRED ON
     CXX_EXTENSIONS OFF
 )
diff --git a/sdk/runanywhere-commons/README.md b/sdk/runanywhere-commons/README.md
@@ -32,7 +32,7 @@ RunAnywhere Commons is the shared C++ layer that sits between platform SDKs (Swi
 
 ### Design Principles
 
-- **C++ Core, C API Surface** - C++17 internally, pure C API for FFI compatibility
+- **C++ Core, C API Surface** - C++20 internally, pure C API for FFI compatibility
 - **Vtable-Based Polymorphism** - No C++ virtual inheritance at API boundaries
 - **Priority-Based Dispatch** - Service providers register with priority; first capable handler wins
 - **Lazy Initialization** - Services created on-demand, not at startup
@@ -173,7 +173,7 @@ printf("Transcription: %s\n", result.text);
 ### Prerequisites
 
 - **CMake** 3.22 or higher
-- **C++17** compatible compiler (Clang, GCC)
+- **C++20** compatible compiler (Clang, GCC, MSVC)
 - **Platform-specific**: Xcode 15+ (iOS/macOS), Android NDK r25+ (Android)
 
 ### Quick Start
diff --git a/sdk/runanywhere-commons/src/backends/llamacpp/CMakeLists.txt b/sdk/runanywhere-commons/src/backends/llamacpp/CMakeLists.txt
@@ -203,7 +203,7 @@ target_link_libraries(rac_backend_llamacpp PUBLIC
 )
 
 set_target_properties(rac_backend_llamacpp PROPERTIES
-    CXX_STANDARD 17
+    CXX_STANDARD 20
     CXX_STANDARD_REQUIRED ON
     CXX_EXTENSIONS OFF
 )
diff --git a/sdk/runanywhere-commons/src/backends/onnx/CMakeLists.txt b/sdk/runanywhere-commons/src/backends/onnx/CMakeLists.txt
@@ -218,7 +218,7 @@ else()
 endif()
 
 set_target_properties(rac_backend_onnx PROPERTIES
-    CXX_STANDARD 17
+    CXX_STANDARD 20
     CXX_STANDARD_REQUIRED ON
     CXX_EXTENSIONS OFF
 )
diff --git a/sdk/runanywhere-commons/src/backends/rag/CMakeLists.txt b/sdk/runanywhere-commons/src/backends/rag/CMakeLists.txt
@@ -77,7 +77,7 @@ set(RAG_BACKEND_HEADERS
 if(TARGET rac_backend_onnx)
     list(APPEND RAG_BACKEND_SOURCES onnx_embedding_provider.cpp)
     list(APPEND RAG_BACKEND_HEADERS onnx_embedding_provider.h)
-    
+
     # ONNX can also provide text generation
     list(APPEND RAG_BACKEND_SOURCES onnx_generator.cpp)
     list(APPEND RAG_BACKEND_HEADERS onnx_generator.h)
@@ -121,9 +121,9 @@ endif()
 # Define RAC_RAG_BUILDING to export symbols
 target_compile_definitions(rac_backend_rag PRIVATE RAC_RAG_BUILDING)
 
-# USearch requires C++17 - set via properties for better Xcode compatibility
+# USearch requires C++17 minimum - set via properties for better Xcode compatibility
 set_target_properties(rac_backend_rag PROPERTIES
-    CXX_STANDARD 17
+    CXX_STANDARD 20
     CXX_STANDARD_REQUIRED ON
     CXX_EXTENSIONS OFF
 )
@@ -202,4 +202,4 @@ if(RAC_PLATFORM_ANDROID AND RAC_BUILD_SHARED)
         # 16KB page alignment for Android 15+ (API 35) compliance
         target_link_options(rac_backend_rag_jni PRIVATE -Wl,--gc-sections -Wl,-z,max-page-size=16384)
     endif()
-endif()
+endif()
diff --git a/sdk/runanywhere-commons/src/backends/whispercpp/CMakeLists.txt b/sdk/runanywhere-commons/src/backends/whispercpp/CMakeLists.txt
@@ -122,7 +122,7 @@ target_link_libraries(rac_backend_whispercpp PUBLIC
     nlohmann_json::nlohmann_json
 )
 
-target_compile_features(rac_backend_whispercpp PUBLIC cxx_std_17)
+target_compile_features(rac_backend_whispercpp PUBLIC cxx_std_20)
 
 # =============================================================================
 # Platform-specific configuration
diff --git a/sdk/runanywhere-commons/src/backends/whisperkit_coreml/CMakeLists.txt b/sdk/runanywhere-commons/src/backends/whisperkit_coreml/CMakeLists.txt
@@ -32,7 +32,7 @@ target_link_libraries(rac_backend_whisperkit_coreml PUBLIC
     rac_commons
 )
 
-target_compile_features(rac_backend_whisperkit_coreml PUBLIC cxx_std_17)
+target_compile_features(rac_backend_whisperkit_coreml PUBLIC cxx_std_20)
 
 # =============================================================================
 # Summary
diff --git a/sdk/runanywhere-commons/src/jni/CMakeLists.txt b/sdk/runanywhere-commons/src/jni/CMakeLists.txt
@@ -19,7 +19,7 @@
 cmake_minimum_required(VERSION 3.14)
 project(runanywhere_commons_jni)
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # nlohmann_json is provided by the parent CMakeLists.txt
diff --git a/sdk/runanywhere-commons/src/server/CMakeLists.txt b/sdk/runanywhere-commons/src/server/CMakeLists.txt
@@ -66,7 +66,7 @@ if(UNIX AND NOT APPLE)
 endif()
 
 # Compiler options
-target_compile_features(rac_server PUBLIC cxx_std_17)
+target_compile_features(rac_server PUBLIC cxx_std_20)
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
     target_compile_options(rac_server PRIVATE -Wall -Wextra -Wpedantic)
diff --git a/sdk/runanywhere-commons/tests/CMakeLists.txt b/sdk/runanywhere-commons/tests/CMakeLists.txt
@@ -11,7 +11,7 @@ target_include_directories(test_core PRIVATE
     ${CMAKE_SOURCE_DIR}/include
 )
 target_link_libraries(test_core PRIVATE rac_commons)
-target_compile_features(test_core PRIVATE cxx_std_17)
+target_compile_features(test_core PRIVATE cxx_std_20)
 add_test(NAME core_tests COMMAND test_core --run-all)
 
 # --- test_extraction: Always built (no backend dependency) ---
@@ -34,7 +34,7 @@ if(RAC_BACKEND_ONNX AND TARGET rac_backend_onnx)
         ${CMAKE_SOURCE_DIR}/include
     )
     target_link_libraries(test_vad PRIVATE rac_commons rac_backend_onnx)
-    target_compile_features(test_vad PRIVATE cxx_std_17)
+    target_compile_features(test_vad PRIVATE cxx_std_20)
     add_test(NAME vad_tests COMMAND test_vad --run-all)
 
     # STT test
@@ -44,7 +44,7 @@ if(RAC_BACKEND_ONNX AND TARGET rac_backend_onnx)
         ${CMAKE_SOURCE_DIR}/include
     )
     target_link_libraries(test_stt PRIVATE rac_commons rac_backend_onnx)
-    target_compile_features(test_stt PRIVATE cxx_std_17)
+    target_compile_features(test_stt PRIVATE cxx_std_20)
     add_test(NAME stt_tests COMMAND test_stt --run-all)
 
     # TTS test
@@ -54,7 +54,7 @@ if(RAC_BACKEND_ONNX AND TARGET rac_backend_onnx)
         ${CMAKE_SOURCE_DIR}/include
     )
     target_link_libraries(test_tts PRIVATE rac_commons rac_backend_onnx)
-    target_compile_features(test_tts PRIVATE cxx_std_17)
+    target_compile_features(test_tts PRIVATE cxx_std_20)
     add_test(NAME tts_tests COMMAND test_tts --run-all)
 
     # WakeWord test
@@ -64,7 +64,7 @@ if(RAC_BACKEND_ONNX AND TARGET rac_backend_onnx)
         ${CMAKE_SOURCE_DIR}/include
     )
     target_link_libraries(test_wakeword PRIVATE rac_commons rac_backend_onnx)
-    target_compile_features(test_wakeword PRIVATE cxx_std_17)
+    target_compile_features(test_wakeword PRIVATE cxx_std_20)
     add_test(NAME wakeword_tests COMMAND test_wakeword --run-all)
 endif()
 
@@ -76,7 +76,7 @@ if(RAC_BACKEND_LLAMACPP AND TARGET rac_backend_llamacpp)
         ${CMAKE_SOURCE_DIR}/include
     )
     target_link_libraries(test_llm PRIVATE rac_commons rac_backend_llamacpp)
-    target_compile_features(test_llm PRIVATE cxx_std_17)
+    target_compile_features(test_llm PRIVATE cxx_std_20)
     add_test(NAME llm_tests COMMAND test_llm --run-all)
 endif()
 
@@ -90,7 +90,7 @@ if(RAC_BACKEND_ONNX AND RAC_BACKEND_LLAMACPP
     )
     target_link_libraries(test_voice_agent PRIVATE
         rac_commons rac_backend_onnx rac_backend_llamacpp)
-    target_compile_features(test_voice_agent PRIVATE cxx_std_17)
+    target_compile_features(test_voice_agent PRIVATE cxx_std_20)
     add_test(NAME voice_agent_tests COMMAND test_voice_agent --run-all)
 endif()
 
@@ -148,7 +148,7 @@ if(RAC_BACKEND_RAG AND TARGET rac_backend_rag)
         Threads::Threads
         GTest::gtest_main
     )
-    target_compile_features(rac_rag_backend_thread_safety_test PRIVATE cxx_std_17)
+    target_compile_features(rac_rag_backend_thread_safety_test PRIVATE cxx_std_20)
     include(GoogleTest)
     gtest_discover_tests(rac_rag_backend_thread_safety_test
         DISCOVERY_MODE PRE_TEST
@@ -168,7 +168,7 @@ if(RAC_BACKEND_RAG AND TARGET rac_backend_rag)
         Threads::Threads
         GTest::gtest_main
     )
-    target_compile_features(rac_chunker_test PRIVATE cxx_std_17)
+    target_compile_features(rac_chunker_test PRIVATE cxx_std_20)
     gtest_discover_tests(rac_chunker_test
         DISCOVERY_MODE PRE_TEST
     )
@@ -187,7 +187,7 @@ if(RAC_BACKEND_RAG AND TARGET rac_backend_rag)
         Threads::Threads
         GTest::gtest_main
     )
-    target_compile_features(rac_simple_tokenizer_test PRIVATE cxx_std_17)
+    target_compile_features(rac_simple_tokenizer_test PRIVATE cxx_std_20)
     gtest_discover_tests(rac_simple_tokenizer_test
         DISCOVERY_MODE PRE_TEST
     )
diff --git a/sdk/runanywhere-commons/tools/CMakeLists.txt b/sdk/runanywhere-commons/tools/CMakeLists.txt
@@ -38,7 +38,7 @@ find_package(Threads REQUIRED)
 target_link_libraries(runanywhere-server PRIVATE Threads::Threads)
 
 # Compiler features
-target_compile_features(runanywhere-server PRIVATE cxx_std_17)
+target_compile_features(runanywhere-server PRIVATE cxx_std_20)
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
     target_compile_options(runanywhere-server PRIVATE -Wall -Wextra)
diff --git a/sdk/runanywhere-web/wasm/CMakeLists.txt b/sdk/runanywhere-web/wasm/CMakeLists.txt
@@ -35,7 +35,7 @@ option(RAC_WASM_WEBGPU "Enable WebGPU acceleration for llama.cpp (requires JSPI-
 # C++ CONFIGURATION
 # =============================================================================
 
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ project(linux-voice-assistant`
`31`	`31`	`DESCRIPTION "Linux Voice Assistant using RunAnywhere Commons"`
`32`	`32`	`)`
`33`	`33`
`34`		`-set(CMAKE_CXX_STANDARD 17)`
	`34`	`+set(CMAKE_CXX_STANDARD 20)`
`35`	`35`	`set(CMAKE_CXX_STANDARD_REQUIRED ON)`
`36`	`36`
`37`	`37`	`# =============================================================================`
Original file line number	Diff line number	Diff line change
`@@ -203,7 +203,7 @@ target_link_libraries(rac_backend_llamacpp PUBLIC`
`203`	`203`	`)`
`204`	`204`
`205`	`205`	`set_target_properties(rac_backend_llamacpp PROPERTIES`
`206`		`- CXX_STANDARD 17`
	`206`	`+ CXX_STANDARD 20`
`207`	`207`	`CXX_STANDARD_REQUIRED ON`
`208`	`208`	`CXX_EXTENSIONS OFF`
`209`	`209`	`)`
Original file line number	Diff line number	Diff line change
`@@ -218,7 +218,7 @@ else()`
`218`	`218`	`endif()`
`219`	`219`
`220`	`220`	`set_target_properties(rac_backend_onnx PROPERTIES`
`221`		`- CXX_STANDARD 17`
	`221`	`+ CXX_STANDARD 20`
`222`	`222`	`CXX_STANDARD_REQUIRED ON`
`223`	`223`	`CXX_EXTENSIONS OFF`
`224`	`224`	`)`