Kconfig

mainmenu "FluffyVM Configuration"

menu Debugging
  config DEBUG
    bool "Enable debug mode"
    default n
    help
      Enable debugging checks and show debug
      options
 
  choice
    prompt "Additional sanitizer"
    depends on DEBUG && !LLVM_XRAY
    optional

    config ASAN
      bool "Enable Address Sanitizer"
    config TSAN
      bool "Enable Thread Sanitizer" 
    config MSAN
      bool "Enable Memory Sanitizer"
  endchoice
  
  menu "Address Sanitizer"
    depends on ASAN

    config ASAN_OPTS
      string "Default ASAN options"
      default "fast_unwind_on_malloc=0:detect_invalid_pointer_pairs=10:strict_string_checks=1:strict_init_order=1:check_initialization_order=1:print_stats=1:detect_stack_use_after_return=1:atexit=1" 
  endmenu   

  menu "Memory Sanitizer"  
    depends on MSAN

    config MSAN_OPTS
      string "Default MSAN options"
      default ""
  endmenu

  menu "Thread Sanitizer"  
    depends on TSAN

    config TSAN_OPTS
      string "Default TSAN options"
      default "second_deadlock_stack=1"
  endmenu
  
  config LLVM_XRAY
    bool "Enable LLVM's XRay instrumentation"
    default n
    select DONT_START_SEPERATE_MAIN_THREAD

  menu "LLVM XRay"
    depends on LLVM_XRAY

    config LLVM_XRAY_OPTS
      string "Default XRay options"
      default "xray_mode=xray-basic:patch_premain=true:verbosity=1"
  endmenu
  
  config UBSAN
    bool "Enable Undefined behavior Sanitizer"
    default n
  
  menu "Undefined Sanitizer"
    depends on UBSAN

    config UBSAN_OPTS
      string "Default UBSAN options"
      default "print_stacktrace=1:suppressions=suppressions/UBSan.supp"
  endmenu
endmenu

menu General
  config VERSION_MAJOR
    int
    default 0

  config VERSION_MINOR
    int
    default 1

  config VERSION_PATCH
    int
    default 0

  config VERSION_LOCAL_VERSION
    string "Local version"
    default ""
    help
      Appended to the end of version string
  
  config STRICTLY_POSIX
    bool "Strict POSIX compliant"
    default y
    help
      Disable any non POSIX 2008 libc or
      platform specific API usage

  config USE_SETCONTEXT
    bool "Use ucontext functions for coroutine"
    depends on !STRICTLY_POSIX
    default n
    help
      As `*context` functions are removed in POSIX 2008
      there two approach which is use `*context`
      functions (ignoring portability) or use POSIX
      threads (inefficient)
      
      Rationale for why this option exist:
      This exists due its worth it to add as option.

      Rationale for why this off by default:
      I considered `*context` functions non portable
      for POSIX 2008 standard

  choice PLATFORM
    prompt "Select platform to target"
    depends on !STRICTLY_POSIX
    default PLATFORM_LINUX_5_10
    help
      Select platform you are targetting
      or none to not assume any platform
      specific features (depends on
      platform, additional options are
      shown)
    
#     config PLATFORM_LINUX_4_19
#      bool "Linux version >= 4.19"
#    config PLATFORM_LINUX_5_10
#      bool "Linux version >= 5.10"
    config PLATFORM_NONE
      bool "None"
  endchoice

  choice TARGET_LIBC
    prompt "Select libc to target"
    depends on !STRICTLY_POSIX
    default LIBC_GLIBC
    help
      Select libc to target and show
      additional options or none
      to not use non POSIX 2008 features
      (Please note that libc REQUIRED to 
      be POSIX 2008 compliant no matter 
      what you selects)

#    config LIBC_GLIBC
#      bool "GLibc"
#    config LIBC_MUSL
#      bool "Musl"
#    config LIBC_BIONIC
#      bool "Bionic"
    config LIBC_NONE
      bool "None"
  endchoice

  config THREAD_LIST_INCREMENT_SIZE
    int "Thread list increment size"
    range 1 50
    default 10
endmenu

menu Performance
  config USE_GOTO_POINTER
    bool "Use goto pointer"
endmenu

config DONT_START_SEPERATE_MAIN_THREAD
  bool "Don't start seperate main thread"
  default n