CONFIG GCC on kernel 5.5

i have a problem with GCC PLUGINS on my news kernel. I prepared a custom linux kernel to harden my future compilation, but i cannot activate the following options :

CONFIG_GCC_PLUGINS
CONFIG_GCC_PLUGIN_RANDSTRUCT
CONFIG_GCC_PLUGIN_LATENT_ENTROPY
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE
CONFIG_GCC_PLUGIN_STACKLEAK
CONFIG_STACKLEAK_METRICS
CONFIG_STACKLEAK_RUNTIME_DISABLE

My kernel version is 5.5.0 && my gcc version is 8.3.0.

After a little research into the kernel sources, GCC should be in the following section:

│ Symbol: GCC_PLUGINS [=n]                                                                                                                                                                                   │  
  │ Type  : bool                                                                                                                                                                                               │  
  │ Prompt: GCC plugins                                                                                                                                                                                        │  
  │   Location:                                                                                                                                                                                                │  
  │ (1) -> General architecture-dependent options                                                                                                                                                              │  
  │   Defined at scripts/gcc-plugins/Kconfig:17                                                                                                                                                                │  
  │   Depends on: HAVE_GCC_PLUGINS [=y] && PLUGIN_HOSTCC [=]!=  

When I go to the indicated section : "General architecture-dependent options" , I can't find GCC

  [*] Optimize very unlikely/likely branches                                                                                             │ │  
  [ ]   Static key selftest                                                                                                              │ │  
  [*] Stack Protector buffer overflow detection                                                                                          │ │  
  [*]   Strong Stack Protector                                                                                                           │ │  
  (32) Number of bits to use for ASLR of mmap base address                                                                               │ │  
  [ ] Provide system calls for 32-bit time_t                                                                                             │ │  
  [*] Use a virtually-mapped stack                                                                                                       │ │  
   GCOV-based kernel profiling  ----                                                                                                                                                                                                        

Is it possible to have an opinion on the subject please?