From 194ec61843b9598ce90873c812b817c4b96e2e0d Mon Sep 17 00:00:00 2001
From: Baruch Siach <baruch@tkos.co.il>
Date: Thu, 2 Sep 2021 12:56:00 +0300
Subject: Detect libpcap dependencies using pkg-config

When building statically the link command line must include all
dependencies of all libraries. libpcap can optionally depend on libnl.
mausezahn can't build statically in this case.

Use pkg-config in configure and in the link command to construct the
library flags we need to link with libpcap.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'configure')

diff --git a/configure b/configure
index 510826a..598ae24 100755
--- a/configure
+++ b/configure
@@ -588,7 +588,9 @@ int main(void)
 }
 EOF
 
-	$CC -o $TMPDIR/pcaptest $TMPDIR/pcaptest.c -lpcap >> config.log 2>&1
+	$CC -o $TMPDIR/pcaptest $TMPDIR/pcaptest.c \
+		$($PKG_CONFIG --libs libpcap 2>> config.log) \
+		>> config.log 2>&1
 	if [ ! -x $TMPDIR/pcaptest ] ; then
 		echo "[NO]"
 		echo "CONFIG_LIBPCAP=0" >> Config
-- 
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