commit 1631e391879c85de3ee97406c19d6a8057294042
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Tue Aug 23 09:02:06 2022 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Tue Aug 23 09:02:06 2022 +0200

    Add FL_EXPORT directives erroneously removed at 7deff86.

 FL/x11.H               | 2 +-
 src/Fl_Screen_Driver.H | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git FL/x11.H FL/x11.H
index a9421b5..1168701 100644
--- FL/x11.H
+++ FL/x11.H
@@ -65,7 +65,7 @@ extern FL_EXPORT void *fl_xftfont;
 // With Xlib / X11 fonts, fl_xfont will return the current selected font.
 // With XFT / X11 fonts, fl_xfont will attempt to return the bitmap "core" font most
 // similar to (usually the same as) the current XFT font.
-class Fl_XFont_On_Demand
+class FL_EXPORT Fl_XFont_On_Demand
 {
 public:
   Fl_XFont_On_Demand(XFontStruct* p = NULL) : ptr(p) { }
diff --git src/Fl_Screen_Driver.H src/Fl_Screen_Driver.H
index e0395bd..135a7bf 100644
--- src/Fl_Screen_Driver.H
+++ src/Fl_Screen_Driver.H
@@ -186,7 +186,8 @@ public:
 
   void rescale_all_windows_from_screen(int screen, float f);
   static void transient_scale_display(float f, int nscreen);
-  static int scale_handler(int event);
+  // need export to fltk_gl.so because used in glut_compatibility.cxx
+  static FL_EXPORT int scale_handler(int event);
   virtual void desktop_scale_factor() {}
   void use_startup_scale_factor();
   enum APP_SCALING_CAPABILITY {