chore: import upstream snapshot with attribution

2026-07-13 12:47:05 +08:00
commit 4f3b7da785
7394 changed files with 2005594 additions and 0 deletions
@@ -0,0 +1,64 @@
+# GCC and Clang flags for C++ template duplicate instantiation issues
+cmake_minimum_required(VERSION 3.15)
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    # For C++ template duplicate instantiation errors
+    if(NOT SD_CUDA)
+        add_compile_options(-fpermissive)
+        add_compile_options(-ftemplate-depth=1024)
+        add_compile_options(-fno-gnu-unique)
+        message(STATUS "Added -fpermissive: Allows duplicate template instantiations")
+        message(STATUS "Added template-related flags for C++ duplicate handling")
+    else()
+        # Also set CXX flags for host compilation
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fpermissive -Wno-error")
+        message(STATUS "Added CUDA-specific compiler flags for duplicate template instantiations")
+        message(STATUS "Added --disable-warnings to suppress NVCC errors")
+    endif()
+elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    # For Clang template duplicate instantiation handling
+    if(NOT SD_CUDA)
+        # Template instantiation depth
+        add_compile_options(-ftemplate-depth=1024)
+
+        # Check if this is an Android build
+        if(ANDROID OR CMAKE_SYSTEM_NAME STREQUAL "Android")
+            # Android NDK specific handling - be more permissive like GCC
+            add_compile_options(-Wno-error)
+            add_compile_options(-Wno-duplicate-decl-specifier)
+            add_compile_options(-Wno-unused-command-line-argument)
+            add_compile_options(-ffunction-sections)
+            add_compile_options(-fdata-sections)
+            # Android linker doesn't support ICF well, use basic folding
+            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")
+            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--gc-sections")
+            message(STATUS "Added Android-specific Clang flags for duplicate template handling")
+        else()
+            # Desktop Clang with full template folding support
+            add_compile_options(-ffunction-sections)
+            add_compile_options(-fdata-sections)
+            add_compile_options(-fmerge-all-constants)
+            add_compile_options(-fno-unique-section-names)
+            # Use LLD linker for better template folding support
+            add_compile_options(-fuse-ld=lld)
+            # Linker flags for identical code folding (ICF)
+            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--icf=all -Wl,--gc-sections")
+            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--icf=all -Wl,--gc-sections")
+            message(STATUS "Added desktop Clang template folding with LLD linker")
+        endif()
+    else()
+        # CUDA with Clang
+        if(ANDROID OR CMAKE_SYSTEM_NAME STREQUAL "Android")
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftemplate-depth=1024 -Wno-error -Wno-duplicate-decl-specifier")
+            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")
+            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--gc-sections")
+            message(STATUS "Added Android CUDA-specific Clang flags")
+        else()
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftemplate-depth=1024 -ffunction-sections -fdata-sections")
+            set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler=-ffunction-sections -Xcompiler=-fdata-sections")
+            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=lld -Wl,--icf=all")
+            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fuse-ld=lld -Wl,--icf=all")
+            message(STATUS "Added desktop CUDA-specific Clang template folding")
+        endif()
+    endif()
+endif()