missing binary operator before token "(" on first #if

Using Arduino Programming Questions
#1

LS,
This error puzzles me for some hours now

#define useTFT // TFT as screen output
// comment out to use LCD//#define ILI9341

#define ST7735

#if ENABLED(useTFT)
  #include <SPI.h>
  #include <Adafruit_GFX.h>    // Core graphics library
  #if ENABLED(ST7735)
    #include <Adafruit_ST7735.h> // Hardware-specific library
// Declare an instance of the ST7735
      Adafruit_ST7735 TFTscreen = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

  #endif //ST7735
#endif //useTFT

I did some web searchin but no real solution.
Any suggestions??

#2

#ifdef USE_TFT

or

#if defined(USE_TFT)

#3

What is "ENABLED" supposted to do? Did you mean "defined"?

#4

septillion:
What is "ENABLED" supposted to do? Did you mean "defined"?

// Macros to support option testing
#define CAT(a, ...) a ## VA_ARGS
#define SWITCH_ENABLED_false 0
#define SWITCH_ENABLED_true 1
#define SWITCH_ENABLED_0 0
#define SWITCH_ENABLED_1 1
#define SWITCH_ENABLED_0x0 0
#define SWITCH_ENABLED_0x1 1
#define SWITCH_ENABLED 1
#define ENABLED(b) CAT(SWITCH_ENABLED, b)
#define DISABLED(b) !ENABLED(b)

#5

but your #define useTFT doesn't define a value

#6