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--- a/backend.h
+++ b/backend.h
@@ -242,7 +242,7 @@ extern GameInfo gameInfo;
/* ICS vars used with backend.c and zippy.c */
enum ICS_TYPE { ICS_GENERIC, ICS_ICC, ICS_FICS, ICS_CHESSNET /* not really supported */ };
-enum ICS_TYPE ics_type;
+extern enum ICS_TYPE ics_type;
/* pgntags.c prototypes
*/
--- a/evalgraph.h
+++ b/evalgraph.h
@@ -34,7 +34,7 @@ typedef enum { PEN_NONE, PEN_BLACK, PEN_DOTTED, PEN_BLUEDOTTED, PEN_BOLDWHITE, P
#define OPEN 0
/* Module globals */
-ChessProgramStats_Move * currPvInfo;
+extern ChessProgramStats_Move * currPvInfo;
extern int currFirst;
extern int currLast;
extern int currCurrent;
--- a/xaw/xhistory.c
+++ b/xaw/xhistory.c
@@ -96,7 +96,6 @@ ScrollToCursor (Option *opt, int caretPos)
// ------------------------------ callbacks --------------------------
-char *historyText;
char historyTranslations[] =
"<Btn3Down>: select-start() \n \
<Btn3Up>: extend-end(PRIMARY) SelectMove() \n";
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