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From 87427256640f806710dd97fc807a9a896147c617 Mon Sep 17 00:00:00 2001
From: Vinson Lee <vlee@freedesktop.org>
Date: Sat, 12 Nov 2016 00:55:35 +0000
Subject: [PATCH] Check for bpf_attr map_flags.
map_flags is not available until Linux 4.6.
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
[Upstream commit: https://github.com/kernelslacker/trinity/commit/87427256640f806710dd97fc807a9a896147c617]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
configure | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/configure b/configure
index ca37e4ef..18d9df73 100755
--- a/configure
+++ b/configure
@@ -222,6 +222,33 @@ else
fi
#############################################################################################
+# is /usr/include/linux/bpf.h new enough to feature bpf
+#
+echo -n "[*] Checking if bpf_attr can use map_flags.. "
+rm -f "$TMP" || exit 1
+
+cat >"$TMP.c" << EOF
+#include <stdio.h>
+#include <linux/bpf.h>
+
+void main()
+{
+ union bpf_attr attr = {
+ .map_flags = 0,
+ };
+}
+EOF
+
+${CC} ${CFLAGS} "$TMP.c" -o "$TMP" &>"$TMP.log"
+if [ ! -x "$TMP" ]; then
+ echo $RED "[NO]" $COL_RESET
+ MISSING_DEFS=1
+else
+ echo $GREEN "[YES]" $COL_RESET
+ echo "#define USE_BPF 1" >> $CONFIGH
+fi
+
+#############################################################################################
check_header linux/caif/caif_socket.h USE_CAIF
check_header linux/if_alg.h USE_IF_ALG
@@ -239,7 +266,6 @@ check_header execinfo.h USE_BACKTRACE
check_header netatalk/at.h USE_APPLETALK
check_header netrom/netrom.h USE_NETROM
check_header netrose/rose.h USE_ROSE
-check_header linux/bpf.h USE_BPF
rm -f "$TMP" "$TMP.log" "$TMP.c"
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