--- "eclipse.platform.swt/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/os_custom.h.org"	2021-08-02 13:18:59.832947231 +0800
+++ "eclipse.platform.swt/bundles/org.eclipse.swt/Eclipse SWT PI/gtk/library/os_custom.h"	2021-08-02 13:19:34.425509217 +0800
@@ -105,7 +105,7 @@
 glong g_utf8_offset_to_utf16_offset(const gchar*, glong);

 // Cached JVM pointer: see bug 521487.
-JavaVM *cached_jvm;
+extern JavaVM *cached_jvm;

 #define SWT_TYPE_FIXED (swt_fixed_get_type ())
 #define SWT_FIXED(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SWT_TYPE_FIXED, SwtFixed))