[goocanvas/prep-msvc-3.0] src/goocanvasatk.*: Fix autotools linker error

[Chun-wei Fan <fanchunwei src gnome org>]

commit d2c851a574d42c117b6311f2bc2473c666aa3609
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Sat Jun 12 12:34:29 2021 +0800

    src/goocanvasatk.*: Fix autotools linker error
    
    Apparently the GNU linker does not like us including goocanvasatk.h in
    goocanvasatk.c, so work around things by adding prototypes in goocanvasatk.c
    instead

 src/goocanvasatk.c | 10 +++++++++-
 src/goocanvasatk.h |  4 ----
 2 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/src/goocanvasatk.c b/src/goocanvasatk.c
index abdbe41..fa30eeb 100644
--- a/src/goocanvasatk.c
+++ b/src/goocanvasatk.c
@@ -11,7 +11,15 @@
 #include <math.h>
 #include <gtk/gtk.h>
 #include "goocanvas.h"
-#include "goocanvasatk.h"
+
+#ifdef _MSC_VER
+GOOCANVAS_API
+GType    goo_canvas_accessible_factory_get_type  (void) G_GNUC_CONST;
+GOOCANVAS_API
+GType    goo_canvas_item_accessible_factory_get_type  (void) G_GNUC_CONST;
+GOOCANVAS_API
+GType    goo_canvas_widget_accessible_factory_get_type  (void) G_GNUC_CONST;
+#endif
 
 
 /*
diff --git a/src/goocanvasatk.h b/src/goocanvasatk.h
index ee83ebb..bb1eae8 100644
--- a/src/goocanvasatk.h
+++ b/src/goocanvasatk.h
@@ -8,15 +8,11 @@
 #define __GOO_CANVAS_ATK_H__
 
 #include <gtk/gtk.h>
-#include "goocanvasexports.h"
 
 G_BEGIN_DECLS
 
-GOOCANVAS_API
 GType    goo_canvas_accessible_factory_get_type  (void) G_GNUC_CONST;
-GOOCANVAS_API
 GType    goo_canvas_item_accessible_factory_get_type  (void) G_GNUC_CONST;
-GOOCANVAS_API
 GType    goo_canvas_widget_accessible_factory_get_type  (void) G_GNUC_CONST;