cmake: fix typo from previous commit.

CMakeLists.txt

@@ -369,7 +369,7 @@ option_string(SDL_ASSERTIONS "Enable internal sanity checks (auto/disabled/relea
 set_option(SDL_ASSEMBLY            "Enable assembly routines" ${SDL_ASSEMBLY_DEFAULT})
 dep_option(SDL_AVX                 "Use AVX assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
 dep_option(SDL_AVX2                "Use AVX2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
-dep_option(SDL_AVX512F             "Use AVX512F assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
+dep_option(SDL_AVX512              "Use AVX512 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
 dep_option(SDL_SSE                 "Use SSE assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
 dep_option(SDL_SSE2                "Use SSE2 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
 dep_option(SDL_SSE3                "Use SSE3 assembly routines" ON "SDL_ASSEMBLY;SDL_CPU_X86 OR SDL_CPU_X64" OFF)
@@ -884,7 +884,7 @@ if(SDL_ASSEMBLY)
       set(HAVE_AVX2 TRUE)
     endif()
   endif()
-  if(SDL_AVX512F)
+  if(SDL_AVX512)
     cmake_push_check_state()
     if(USE_GCC OR USE_CLANG)
       set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mavx512f")
@@ -1048,8 +1048,8 @@ if(NOT HAVE_SSE41)
   set(SDL_DISABLE_SSE41 1)
 endif()
 
-if(NOT HAVE_SSE41)
-  set(SDL_DISABLE_SSE41 1)
+if(NOT HAVE_SSE42)
+  set(SDL_DISABLE_SSE42 1)
 endif()
 
 if(NOT HAVE_AVX)