tftp-hpa: Fix build with -fno-common

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-daemons/tftp-hpa/files/0001-tftp-Mark-toplevel-definition-as-external.patch

@@ -0,0 +1,30 @@
+From 2a12174a5059e84d4ff6fad8f983a4d0f2127e73 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 12 Aug 2020 12:17:31 -0700
+Subject: [PATCH] tftp: Mark toplevel definition as external
+
+Fixes
+multiple definition of `toplevel'; tftp.o:/usr/src/debug/tftp-hpa/5.2-r0/tftp-hpa-5.2/tftp/tftp.c:51: first defined here
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ tftp/tftp.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tftp/tftp.c b/tftp/tftp.c
+index 9d15022..109848c 100644
+--- a/tftp/tftp.c
++++ b/tftp/tftp.c
+@@ -48,7 +48,7 @@ extern int maxtimeout;
+ #define PKTSIZE    SEGSIZE+4
+ char ackbuf[PKTSIZE];
+ int timeout;
+-sigjmp_buf toplevel;
++extern sigjmp_buf toplevel;
+ sigjmp_buf timeoutbuf;
+ 
+ static void nak(int, const char *);
+-- 
+2.28.0
+

meta-networking/recipes-daemons/tftp-hpa/tftp-hpa_5.2.bb

@@ -28,6 +28,7 @@ SRC_URI = "http://kernel.org/pub/software/network/tftp/tftp-hpa/tftp-hpa-${PV}.t
            file://tftp-hpa-bug-fix-on-separated-CR-and-LF.patch \
            file://fix-writing-emtpy-file.patch \
            file://0001-__progname-is-provided-by-libc.patch \
+           file://0001-tftp-Mark-toplevel-definition-as-external.patch \
            file://tftpd-hpa.socket \
            file://tftpd-hpa.service \
 "