Removed SIMD and implemented optimizations from PR 3263

src/CMakeLists.txt

@@ -16,90 +16,6 @@ endif()
 set_property(DIRECTORY APPEND PROPERTY
     COMPILE_DEFINITIONS $<$<CONFIG:Debug>:_DEBUG> $<$<NOT:$<CONFIG:Debug>>:NDEBUG>)
 
-# Platform detection macros
-if(WIN32)
-    add_compile_definitions(PLATFORM_WINDOWS)
-elseif(ANDROID)
-    add_compile_definitions(PLATFORM_ANDROID)
-elseif(APPLE)
-    add_compile_definitions(PLATFORM_MACOS)
-elseif(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
-    add_compile_definitions(PLATFORM_FREEBSD)
-elseif(UNIX)
-    add_compile_definitions(PLATFORM_LINUX)
-endif()
-
-# Architecture-specific intrinsics flags
-if(ARCHITECTURE_x86_64)
-    add_compile_definitions(ARCH_X86_64)
-    
-    if(MSVC AND NOT CXX_CLANG)
-        # MSVC: Enable AVX2 (includes BMI2 support)
-        add_compile_options(/arch:AVX2)
-    else()
-        # GCC/Clang: Enable SSE4.2, AVX2, and BMI2
-        include(CheckCXXCompilerFlag)
-        
-        check_cxx_compiler_flag("-mavx2" COMPILER_SUPPORTS_AVX2)
-        check_cxx_compiler_flag("-mbmi2" COMPILER_SUPPORTS_BMI2)
-        
-        if(COMPILER_SUPPORTS_AVX2)
-            add_compile_options(-mavx2)
-        endif()
-        
-        if(COMPILER_SUPPORTS_BMI2)
-            add_compile_options(-mbmi2)
-            add_compile_definitions(HAS_BMI2)
-        endif()
-    endif()
-    
-elseif(ARCHITECTURE_arm64)
-    add_compile_definitions(ARCH_ARM64)
-    
-    # ARM64 has NEON by default, but enable explicitly for some compilers
-    if(NOT MSVC)
-        add_compile_options(-march=armv8-a)
-    endif()
-    
-    # Android-specific ARM64 configuration
-    if(ANDROID AND ANDROID_ABI STREQUAL "arm64-v8a")
-        add_compile_options(-march=armv8-a+simd)
-    endif()
-    
-elseif(ARCHITECTURE_arm)
-    add_compile_definitions(ARCH_ARM32)
-    
-    # Check for NEON support on ARM32
-    if(NOT MSVC)
-        include(CheckCXXCompilerFlag)
-        check_cxx_compiler_flag("-mfpu=neon" COMPILER_SUPPORTS_NEON)
-        
-        if(COMPILER_SUPPORTS_NEON)
-            add_compile_options(-mfpu=neon)
-            add_compile_definitions(HAS_NEON)
-            
-            # Android ARM32 specific
-            if(ANDROID)
-                add_compile_options(-mfloat-abi=softfp)
-            endif()
-        endif()
-    endif()
-endif()
-
-# Android-specific ABI configurations
-if(ANDROID)
-    if(ANDROID_ABI STREQUAL "x86_64")
-        add_compile_definitions(ARCH_X86_64)
-        if(NOT MSVC)
-            add_compile_options(-msse4.2 -mavx2 -mbmi2)
-        endif()
-    elseif(ANDROID_ABI STREQUAL "armeabi-v7a")
-        add_compile_definitions(ARCH_ARM32)
-        add_compile_options(-mfpu=neon -mfloat-abi=softfp)
-        add_compile_definitions(HAS_NEON)
-    endif()
-endif()
-
 # Set compilation flags
 if (MSVC AND NOT CXX_CLANG)
     set(CMAKE_CONFIGURATION_TYPES Debug Release CACHE STRING "" FORCE)