--- CMakeLists.txt.orig	2025-03-29 12:01:12 UTC
+++ CMakeLists.txt
@@ -120,29 +120,6 @@ endif()
   set(MI_SECURE "ON")
 endif()
 
-
-# Determine architecture
-set(MI_OPT_ARCH_FLAGS "")
-set(MI_ARCH "unknown")
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86|i[3456]86)$" OR CMAKE_GENERATOR_PLATFORM MATCHES "^(x86|Win32)$")
-  set(MI_ARCH "x86")
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(x86_64|x64|amd64|AMD64)$" OR CMAKE_GENERATOR_PLATFORM STREQUAL "x64" OR "x86_64" IN_LIST CMAKE_OSX_ARCHITECTURES) # must be before arm64
-  set(MI_ARCH "x64")
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64|armv[89].?|ARM64)$" OR CMAKE_GENERATOR_PLATFORM STREQUAL "ARM64" OR "arm64" IN_LIST CMAKE_OSX_ARCHITECTURES)
-  set(MI_ARCH "arm64")
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm|armv[34567]|ARM)$")
-  set(MI_ARCH "arm32")
-elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(riscv|riscv32|riscv64)$")
-  if(CMAKE_SIZEOF_VOID_P==4)
-    set(MI_ARCH "riscv32")
-  else()
-    set(MI_ARCH "riscv64")
-  endif()
-else()
-  set(MI_ARCH ${CMAKE_SYSTEM_PROCESSOR})
-endif()
-message(STATUS "Architecture: ${MI_ARCH}") # (${CMAKE_SYSTEM_PROCESSOR}, ${CMAKE_GENERATOR_PLATFORM}, ${CMAKE_GENERATOR})")
-
 # negative overrides (mainly to support vcpkg features)
 if(MI_NO_USE_CXX)
   set(MI_USE_CXX "OFF")
@@ -436,24 +413,6 @@ if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU|I
 if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU|Intel")
   if(MI_OVERRIDE)
     list(APPEND mi_cflags -fno-builtin-malloc)
-  endif()
-endif()
-
-# Compiler and architecture specific flags
-if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU|Intel" AND NOT CMAKE_SYSTEM_NAME MATCHES "Haiku")
-  if(MI_OPT_ARCH)
-    if(APPLE AND CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang" AND CMAKE_OSX_ARCHITECTURES)   # to support multi-arch binaries (#999)
-      if("arm64" IN_LIST CMAKE_OSX_ARCHITECTURES)
-        list(APPEND MI_OPT_ARCH_FLAGS "-Xarch_arm64;-march=armv8.1-a")
-      endif()
-      if("x86_64" IN_LIST CMAKE_OSX_ARCHITECTURES)
-        list(APPEND MI_OPT_ARCH_FLAGS "-Xarch_x86_64;-march=haswell;-Xarch_x86_64;-mavx2")
-      endif()
-    elseif(MI_ARCH STREQUAL "x64")
-      set(MI_OPT_ARCH_FLAGS "-march=haswell;-mavx2")    # fast bit scan (since 2013)
-    elseif(MI_ARCH STREQUAL "arm64")
-      set(MI_OPT_ARCH_FLAGS "-march=armv8.1-a")         # fast atomics (since 2016)
-    endif()
   endif()
 endif()