6 files changed, 84 insertions, 0 deletions
diff --git a/backends/module.mk b/backends/module.mk
index e0bdd26cf7..b3a23f10e7 100644
--- a/backends/module.mk
+++ b/backends/module.mk
@@ -28,6 +28,7 @@ MODULE_OBJS := \
 	plugins/elf/ppc-loader.o \
 	plugins/elf/arm-loader.o \
 	plugins/elf/elf-provider.o \
+	plugins/elf/version.o \
 	plugins/dc/dc-provider.o \
 	plugins/posix/posix-provider.o \
 	plugins/sdl/sdl-provider.o \
diff --git a/backends/plugins/elf/elf-provider.cpp b/backends/plugins/elf/elf-provider.cpp
index 8629de6c45..d1c8f6aa05 100644
--- a/backends/plugins/elf/elf-provider.cpp
+++ b/backends/plugins/elf/elf-provider.cpp
@@ -112,6 +112,19 @@ bool ELFPlugin::loadPlugin() {
 		return false;
 	}
 
+	CharFunc buildDateFunc = (CharFunc)findSymbol("PLUGIN_getBuildDate");
+	if (!buildDateFunc) {
+		unloadPlugin();
+		warning("elfloader: plugin '%s' is missing symbols", _filename.c_str());
+		return false;
+	}
+
+	if (strncmp(gScummVMPluginBuildDate, buildDateFunc(), strlen(gScummVMPluginBuildDate))) {
+		unloadPlugin();
+		warning("elfloader: plugin '%s' has a different build date", _filename.c_str());
+		return false;
+	}
+
 	bool ret = DynamicPlugin::loadPlugin();
 
 #ifdef ELF_LOADER_CXA_ATEXIT
diff --git a/backends/plugins/elf/elf-provider.h b/backends/plugins/elf/elf-provider.h
index 92fe5d63d1..0309ffcece 100644
--- a/backends/plugins/elf/elf-provider.h
+++ b/backends/plugins/elf/elf-provider.h
@@ -45,6 +45,8 @@
  */
 class ELFPlugin : public DynamicPlugin {
 protected:
+	typedef const char *(*CharFunc)();
+
 	DLObject *_dlHandle;
 	Common::String _filename;
 	void *_dso_handle;
diff --git a/backends/plugins/elf/plugin.syms b/backends/plugins/elf/plugin.syms
index 24ee1a19dc..70465ae976 100644
--- a/backends/plugins/elf/plugin.syms
+++ b/backends/plugins/elf/plugin.syms
@@ -1,3 +1,4 @@
+PLUGIN_getBuildDate
 PLUGIN_getVersion
 PLUGIN_getType
 PLUGIN_getTypeVersion
diff --git a/backends/plugins/elf/version.cpp b/backends/plugins/elf/version.cpp
new file mode 100644
index 0000000000..0277c6ae1c
--- /dev/null
+++ b/backends/plugins/elf/version.cpp
@@ -0,0 +1,32 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "backends/plugins/elf/version.h"
+
+#ifdef USE_ELF_LOADER
+const char *gScummVMPluginBuildDate __attribute__((visibility("hidden"))) =
+	__DATE__ " " __TIME__ ;
+#endif
+
diff --git a/backends/plugins/elf/version.h b/backends/plugins/elf/version.h
new file mode 100644
index 0000000000..726204aeb7
--- /dev/null
+++ b/backends/plugins/elf/version.h
@@ -0,0 +1,35 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifndef BACKENDS_PLUGINS_ELF_VERSION_H
+#define BACKENDS_PLUGINS_ELF_VERSION_H
+
+#include "common/scummsys.h"
+
+#ifdef USE_ELF_LOADER
+extern const char *gScummVMPluginBuildDate;
+#endif
+
+#endif
+