gtk: avoid redefining _WIN32_WINNT macro

When building for Mingw64 target on Fedora 22 a warning
is issued about _WIN32_WINNT being redefined.

In file included from ui/gtk.c:40:0:
include/ui/gtk.h:5:0: warning: "_WIN32_WINNT" redefined
 # define _WIN32_WINNT 0x0601 /* needed to get definition of MAPVK_VK_TO_VSC */
  ^
In file included from /usr/i686-w64-mingw32/sys-root/mingw/include/crtdefs.h:10:0,
                 from /usr/i686-w64-mingw32/sys-root/mingw/include/stdio.h:9,
                 from /home/berrange/src/virt/qemu/include/qemu/fprintf-fn.h:12,
                 from /home/berrange/src/virt/qemu/include/qemu-common.h:18,
                 from ui/gtk.c:37:
/usr/i686-w64-mingw32/sys-root/mingw/include/_mingw.h:225:0: note: this is the location of the previous definition
 #define _WIN32_WINNT 0x502
 ^

Rather than try to get MAPVK_VK_TO_VSC defined indirectly
by defining _WIN32_WINNT, instead just define it explicitly
if missing.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index ee6dffd306af5d0c7ef3e37a009f12c7f9bdd151..0359333fce30caf57d66874d6c1e0c508a14f853 100644 (file)
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -1,10 +1,6 @@
 #ifndef UI_GTK_H
 #define UI_GTK_H
 
-#ifdef _WIN32
-# define _WIN32_WINNT 0x0601 /* needed to get definition of MAPVK_VK_TO_VSC */
-#endif
-
 #ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE
 /* Work around an -Wstrict-prototypes warning in GTK headers */
 #pragma GCC diagnostic push

diff --git a/ui/gtk.c b/ui/gtk.c
index 187de74b2c3588afc55d21bbaab05e8b2d4f5001..3057cdc3f79f4aa330783afaf40a71ec8b1797cc 100644 (file)
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -104,6 +104,15 @@
 #define GDK_KEY_Pause GDK_Pause
 #endif
 
+/* Some older mingw versions lack this constant or have
+ * it conditionally defined */
+#ifdef _WIN32
+# ifndef MAPVK_VK_TO_VSC
+#  define MAPVK_VK_TO_VSC 0
+# endif
+#endif
+
+
 #define HOTKEY_MODIFIERS        (GDK_CONTROL_MASK | GDK_MOD1_MASK)
 
 static const int modifier_keycode[] = {