From 4738472b70b227d3df49d3d4efc3c72c2a058fed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= <toke@redhat.com>
Date: Thu, 21 Sep 2023 22:30:10 +0200
Subject: [PATCH] configure: Add check for presence of readelf
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Since we're now using $READELF in the libxdp Makefile, we should make sure the
utility is present (and the variable set), or we may get weird 'make' errors.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index fc0874c9..6ee7229b 100755
--- a/configure
+++ b/configure
@@ -66,12 +66,13 @@ check_toolchain()
     : ${M4=m4}
     : ${EMACS=emacs}
     : ${BPFTOOL=bpftool}
+    : ${READELF=readelf}
     : ${ARCH_INCLUDES=}
 
     CLANG=$(find_tool clang "$CLANG")
     LLC=$(find_tool llc "$LLC")
 
-    for TOOL in $PKG_CONFIG $CC $LD $OBJCOPY $CLANG $LLC $M4 $BPFTOOL; do
+    for TOOL in $PKG_CONFIG $CC $LD $OBJCOPY $CLANG $LLC $M4 $BPFTOOL $READELF; do
         if [ ! $(command -v ${TOOL} 2>/dev/null) ]; then
             echo "*** ERROR: Cannot find tool ${TOOL}" ;
             exit 1;
@@ -134,6 +135,7 @@ check_toolchain()
     echo "EMACS:=${EMACS}" >>$CONFIG
     echo "ARCH_INCLUDES:=$ARCH_INCLUDES" >> $CONFIG
     echo "BPFTOOL:=${BPFTOOL}" >> $CONFIG
+    echo "READELF:=${READELF}" >> $CONFIG
 }
 
 check_zlib()