games/gnushogi: fix build with -fno-common

No upstream activity since 2014.
Remove invalid configure flags while here.

games/gnushogi/Makefile

@@ -1,10 +1,11 @@
-# $OpenBSD: Makefile,v 1.30 2020/08/23 11:20:33 cwen Exp $
+# $OpenBSD: Makefile,v 1.31 2021/02/04 21:55:54 naddy Exp $
 
 BROKEN-powerpc =	gnushogi hangs during the build since clang-10
 
 COMMENT=	GNU version of Shogi
 
 DISTNAME=	gnushogi-1.4.2
+REVISION=	0
 CATEGORIES=	games
 
 # GPL
@@ -15,8 +16,6 @@ WANTLIB=	c curses m
 MASTER_SITES=	${MASTER_SITE_GNU:=gnushogi/}
 
 CONFIGURE_STYLE=gnu
-CONFIGURE_ARGS=	--without-x \
-		--without-xshogi
 
 NO_TEST=	Yes
 

games/gnushogi/patches/patch-gnushogi_cursesdsp_c

@@ -0,0 +1,25 @@
+$OpenBSD: patch-gnushogi_cursesdsp_c,v 1.1 2021/02/04 21:55:54 naddy Exp $
+
+fix for -fno-common
+
+Index: gnushogi/cursesdsp.c
+--- gnushogi/cursesdsp.c.orig
++++ gnushogi/cursesdsp.c
+@@ -62,17 +62,11 @@
+ 
+ #define FLUSH_SCANW fflush(stdout), scanw
+ 
+-int mycnt1, mycnt2;
+-
+ #define MARGIN (5)
+ #define TAB (58)
+ 
+ #define VIR_C(s)  ((flag.reverse) ? (NO_COLS - 1 - column(s)) : column(s))
+ #define VIR_R(s)  ((flag.reverse) ? (NO_ROWS - 1 - row(s)) : row(s))
+-
+-unsigned short MV[MAXDEPTH];
+-int MSCORE;
+-char *DRAW;
+ 
+ /* Forward declarations. */
+ /* FIXME: change this name, puh-leeze! */

games/gnushogi/patches/patch-gnushogi_globals_c

@@ -0,0 +1,18 @@
+$OpenBSD: patch-gnushogi_globals_c,v 1.1 2021/02/04 21:55:54 naddy Exp $
+
+fix for -fno-common
+
+Index: gnushogi/globals.c
+--- gnushogi/globals.c.orig
++++ gnushogi/globals.c
+@@ -51,6 +51,10 @@ char ColorStr[2][10];
+ 
+ long znodes;
+ 
++unsigned short MV[MAXDEPTH];
++int MSCORE;
++int mycnt1, mycnt2;
++
+ 
+ 
+ #ifdef BINBOOK

games/gnushogi/patches/patch-gnushogi_rawdsp_c

@@ -0,0 +1,19 @@
+$OpenBSD: patch-gnushogi_rawdsp_c,v 1.1 2021/02/04 21:55:54 naddy Exp $
+
+fix for -fno-common
+
+Index: gnushogi/rawdsp.c
+--- gnushogi/rawdsp.c.orig
++++ gnushogi/rawdsp.c
+@@ -44,11 +44,6 @@
+ #include "gnushogi.h"
+ #include "rawdsp.h"
+ 
+-unsigned short MV[MAXDEPTH];
+-int MSCORE;
+-
+-int mycnt1, mycnt2;
+-char *DRAW;
+ extern char *InPtr;
+ extern short pscore[];
+