[rkward/releases/0.6.5] rkward/rbackend: Fix Windows build

[Thomas Friedrichsmeier]

Git commit cf5d7cd16a49bc31ae0d0fc139285a3d9da74886 by Thomas Friedrichsmeier.
Committed on 13/03/2016 at 19:56.
Pushed by tfry into branch 'releases/0.6.5'.

Fix Windows build

M  +1    -1    rkward/rbackend/rkrbackend.cpp

http://commits.kde.org/rkward/cf5d7cd16a49bc31ae0d0fc139285a3d9da74886

diff --git a/rkward/rbackend/rkrbackend.cpp b/rkward/rbackend/rkrbackend.cpp
index a898a21..4c9fdb9 100644
--- a/rkward/rbackend/rkrbackend.cpp
+++ b/rkward/rbackend/rkrbackend.cpp
@@ -85,7 +85,7 @@ void* RKRBackend::default_global_context = 0;
 	// why oh why isn't Rinterface.h available on Windows?
 	LibExtern void* R_GlobalContext;
 	LibExtern uintptr_t R_CStackLimit;
-	LibExtern void R_SaveGlobalEnvToFile(char*);
+	extern "C" void R_SaveGlobalEnvToFile(char*);
 #else
 #	include <Rinterface.h>
 #endif