From 6d37afaa1ad827e12ecbb6e93783cf7a56cd30df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
Date: Thu, 23 Jan 2020 13:43:12 +0100
Subject: [PATCH] Fix building with GCC 10
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GCC 10 defaults to -fno-common and as a result raises an arror when
linking nasd:

gcc -o nasd -O2 -fno-strict-aliasing   -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld  -L../lib/audio -L/usr/lib64 -L/usr/lib64    dia/libdia.a dda/voxware/libvoxware.a os/libos.a
/usr/bin/ld: dia/libdia.a(lex.o): in function `$d':
lex.c:(.bss+0x48): multiple definition of `yyin'; dia/libdia.a(main.o):/builddir/build/BUILD/nas-1.9.4/server/dia/main.c:79: first defined here
collect2: error: ld returned 1 exit status

The reason is that both lex.c (generated from lex.l) and main.c
define yyin global variable.

This patch changes the main.c definition into a declaration.

Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 server/dia/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/dia/main.c b/server/dia/main.c
index 462e89b..9ea2a12 100644
--- a/server/dia/main.c
+++ b/server/dia/main.c
@@ -76,7 +76,7 @@ static char *AuServerName(void);
 extern char *display;
 
 static int restart = 0;
-FILE *yyin;                     /* for the config parser */
+extern FILE *yyin;                     /* for the config parser */
 
 void
 NotImplemented()
-- 
2.21.1