4 files changed, 11 insertions, 11 deletions
diff --git a/FL/wayland.H b/FL/wayland.H
index 615d2afcf..d5aabab03 100644
--- a/FL/wayland.H
+++ b/FL/wayland.H
@@ -42,7 +42,7 @@ extern FL_EXPORT EGLContext fl_wl_glcontext(GLContext rc);
 
 #ifndef FL_DOXYGEN
 
-#  if FLTK_USE_X11
+#  ifdef FLTK_USE_X11
 //  *********** for X11 component ***********
 #    include "x11.H"
 #  else
diff --git a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
index 98ee9dcfe..cc5bc1324 100644
--- a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
@@ -50,7 +50,7 @@ extern "C" {
 #define fl_max(a,b) ((a) > (b) ? (a) : (b))
 #define fl_min(a,b) ((a) < (b) ? (a) : (b))
 
-#if !FLTK_USE_X11
+#if !defined(FLTK_USE_X11)
 Window fl_window = 0;
 #endif
 
diff --git a/src/drivers/Wayland/fl_wayland_gl_platform_init.cxx b/src/drivers/Wayland/fl_wayland_gl_platform_init.cxx
index 1d060b193..293641d05 100644
--- a/src/drivers/Wayland/fl_wayland_gl_platform_init.cxx
+++ b/src/drivers/Wayland/fl_wayland_gl_platform_init.cxx
@@ -17,13 +17,13 @@
 
 #include "Fl_Wayland_Gl_Window_Driver.H"
 #include "Fl_Wayland_Screen_Driver.H"
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
 #include "../X11/Fl_X11_Gl_Window_Driver.H"
 #endif
 
 Fl_Gl_Window_Driver *Fl_Gl_Window_Driver::newGlWindowDriver(Fl_Gl_Window *w)
 {
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (Fl_Wayland_Screen_Driver::wl_display) return new Fl_Wayland_Gl_Window_Driver(w);
   return new Fl_X11_Gl_Window_Driver(w);
 #else
diff --git a/src/drivers/Wayland/fl_wayland_platform_init.cxx b/src/drivers/Wayland/fl_wayland_platform_init.cxx
index 9173150e2..5154e6232 100644
--- a/src/drivers/Wayland/fl_wayland_platform_init.cxx
+++ b/src/drivers/Wayland/fl_wayland_platform_init.cxx
@@ -21,7 +21,7 @@
 #include "../Unix/Fl_Unix_System_Driver.H"
 #include "Fl_Wayland_Window_Driver.H"
 #include "Fl_Wayland_Image_Surface_Driver.H"
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
 #  include "../Xlib/Fl_Xlib_Copy_Surface_Driver.H"
 #  include <cairo-xlib.h>
 #  include "../Cairo/Fl_Display_Cairo_Graphics_Driver.H"
@@ -57,7 +57,7 @@ static Fl_Fontdesc built_in_table[] = {  // Pango font names
 FL_EXPORT Fl_Fontdesc *fl_fonts = built_in_table;
 
 
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
 
 static bool attempt_wayland() {
   if (Fl_Wayland_Screen_Driver::wl_display) return true;
@@ -118,7 +118,7 @@ Fl_System_Driver *Fl_System_Driver::newSystemDriver() {
 
 
 Fl_Graphics_Driver *Fl_Graphics_Driver::newMainGraphicsDriver() {
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (!attempt_wayland()) return new Fl_Display_Cairo_Graphics_Driver();
 #endif
   return new Fl_Wayland_Graphics_Driver();
@@ -126,7 +126,7 @@ Fl_Graphics_Driver *Fl_Graphics_Driver::newMainGraphicsDriver() {
 
 
 Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h) {
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (!Fl_Wayland_Screen_Driver::wl_display) return new Fl_Xlib_Copy_Surface_Driver(w, h);
 #endif
   return new Fl_Wayland_Copy_Surface_Driver(w, h);
@@ -135,7 +135,7 @@ Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int
 
 Fl_Screen_Driver *Fl_Screen_Driver::newScreenDriver() {
   if (!Fl_Screen_Driver::system_driver) Fl::system_driver();
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (attempt_wayland()) {
     return new Fl_Wayland_Screen_Driver();
   }
@@ -152,7 +152,7 @@ Fl_Screen_Driver *Fl_Screen_Driver::newScreenDriver() {
 
 Fl_Window_Driver *Fl_Window_Driver::newWindowDriver(Fl_Window *w)
 {
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (!attempt_wayland()) return new Fl_X11_Window_Driver(w);
 #endif
   return new Fl_Wayland_Window_Driver(w);
@@ -161,7 +161,7 @@ Fl_Window_Driver *Fl_Window_Driver::newWindowDriver(Fl_Window *w)
 
 Fl_Image_Surface_Driver *Fl_Image_Surface_Driver::newImageSurfaceDriver(int w, int h, int high_res, Fl_Offscreen off)
 {
-#if FLTK_USE_X11
+#ifdef FLTK_USE_X11
   if (!attempt_wayland())
     return new Fl_Xlib_Image_Surface_Driver(w, h, high_res, off);
 #endif