lrzsz: Use Cross AR during compile

Current code hardcodes archiver to be 'ar' from build host

(From OE-Core rev: 74ed1d10434213ad3fcf54ded49879090f979e1e)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/lrzsz/lrzsz-0.12.20/0001-Fix-cross-compilation-using-autoconf-detected-AR.patch

@@ -0,0 +1,36 @@
+From ecdcf0df6c28c65ca6d1e5638726e13e373c76c5 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 11 Nov 2020 22:58:55 -0800
+Subject: [PATCH] Fix cross compilation using autoconf detected AR
+
+currently its using 'ar' program from build host, which is not expected,
+we need to respect AR passed in environment
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ configure.in | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/configure.in b/configure.in
+index 4ddbe8b..b7c3c31 100644
+--- a/configure.in
++++ b/configure.in
+@@ -84,6 +84,13 @@ AC_ARG_ENABLE(syslog,
+ 	  ])
+ 
+ dnl Checks for programs.
++m4_ifndef([AC_PROG_AR],[dnl
++  AN_MAKEVAR([AR], [AC_PROG_AR])
++  AN_PROGRAM([ar], [AC_PROG_AR])
++  AC_DEFUN([AC_PROG_AR],
++  [AC_CHECK_TOOL(AR, ar, :)])
++])
++AC_PROG_AR
+ AC_PROG_CC
+ AC_PROG_GCC_TRADITIONAL
+ dnl AC_PROG_INSTALL  included in AM_INIT_AUTOMAKE
+-- 
+2.29.2
+

meta/recipes-bsp/lrzsz/lrzsz_0.12.20.bb

@@ -19,6 +19,7 @@ SRC_URI = "http://www.ohse.de/uwe/releases/lrzsz-${PV}.tar.gz \
            file://lrzsz-check-locale.h.patch \
            file://cve-2018-10195.patch \
            file://include.patch \
+           file://0001-Fix-cross-compilation-using-autoconf-detected-AR.patch \
            "
 
 SRC_URI[md5sum] = "b5ce6a74abc9b9eb2af94dffdfd372a4"