comms/efax: fix build with -fno-common; ok ian@

comms/efax/Makefile

@@ -1,9 +1,9 @@
-# $OpenBSD: Makefile,v 1.30 2019/07/12 20:43:46 sthen Exp $
+# $OpenBSD: Makefile,v 1.31 2021/02/26 20:45:37 naddy Exp $
 
 COMMENT=	small & simple FAX send/receive program
 
 DISTNAME=	efax-0.9
-REVISION=	3
+REVISION=	4
 CATEGORIES=	comms
 
 MAINTAINER=	Ian Darwin <ian@openbsd.org>

comms/efax/patches/patch-efaxlib_c

@@ -0,0 +1,14 @@
+$OpenBSD: patch-efaxlib_c,v 1.1 2021/02/26 20:45:37 naddy Exp $
+
+Index: efaxlib.c
+--- efaxlib.c.orig
++++ efaxlib.c
+@@ -25,6 +25,8 @@ extern t4tab btab [ ( 64 + 27 + 13 ) + 1 ] ;
+ 
+ short short256 = 256 ;		/* for endian-ness detection */
+ 
++uchar reversebits [ 256 ], normalbits [ 256 ] ;
++
+ /* Make sure printf strings have only %d escapes and n or fewer
+    of them.  Returns 0 if OK, 1 on error. */
+ 

comms/efax/patches/patch-efaxlib_h

@@ -0,0 +1,14 @@
+$OpenBSD: patch-efaxlib_h,v 1.1 2021/02/26 20:45:37 naddy Exp $
+
+Index: efaxlib.h
+--- efaxlib.h.orig
++++ efaxlib.h
+@@ -207,7 +207,7 @@ int runor ( short *a, int na, short *b, int nb, short 
+ /* Bit reversal lookup tables (note that the `normalbits' array
+    is the one actually used for the bit reversal.  */
+ 
+-uchar reversebits [ 256 ], normalbits [ 256 ] ;
++extern uchar reversebits [ 256 ], normalbits [ 256 ] ;
+ 
+ void initbittab(void) ;
+