Author: Dimitry Andric <dimitry@andric.com>
Taken from: https://sourceforge.net/p/elftoolchain/code/3879/
--- a/ld/amd64.h
+++ b/ld/amd64.h
@@ -26,6 +26,6 @@
  * $Id$
  */
 
-char *amd64_script;
+extern char *amd64_script;
 
 void	amd64_register(struct ld *);
--- a/ld/i386.h
+++ b/ld/i386.h
@@ -26,6 +26,6 @@
  * $Id$
  */
 
-char *i386_script;
+extern char *i386_script;
 
 void	i386_register(struct ld *);
--- a/ld/mips.h
+++ b/ld/mips.h
@@ -23,7 +23,7 @@
  * SUCH DAMAGE.
  */
 
-char *littlemips_script;
-char *bigmips_script;
+extern char *littlemips_script;
+extern char *bigmips_script;
 
 void	mips_register(struct ld *);