From 316e4fd40f53c96850128fd65097a42623d1e736 Mon Sep 17 00:00:00 2001
From: Marcel Bargull <marcel.bargull@udo.edu>
Date: Sat, 27 Mar 2021 16:23:34 +0100
Subject: [PATCH] Fix linking Clang 11 compiled objects

With Clang 11 htmlRecover from lib/htmshell.h is picked up as a
definition, not just declaration of the jmp_buf. As such both
lib/htmshell.c and hg/lib/cart.c export two symbols with the same name.
---
 src/inc/htmshell.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/inc/htmshell.h b/src/inc/htmshell.h
index 9d85f45b936..dd586db761c 100644
--- a/src/inc/htmshell.h
+++ b/src/inc/htmshell.h
@@ -160,7 +160,7 @@ void htmlBadVar(char *varName);
 void htmlImage(char *fileName, int width, int height);
 /* Display centered image file. */
 
-jmp_buf htmlRecover;  /* Error recovery jump. Exposed for cart's use. */
+extern jmp_buf htmlRecover;  /* Error recovery jump. Exposed for cart's use. */
 
 void htmlVaWarn(char *format, va_list args);
 /* Write an error message.  (Generally you just call warn() or errAbort().