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 <bar...@tkos.co.il>
---
 configure          | 4 +++-
 mausezahn/Makefile | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 510826a798f5..598ae2433a7a 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
diff --git a/mausezahn/Makefile b/mausezahn/Makefile
index ca16b6579583..9544565355cc 100644
--- a/mausezahn/Makefile
+++ b/mausezahn/Makefile
@@ -1,6 +1,6 @@
 mausezahn-libs =       -lcli \
                        -lnet \
-                       -lpcap \
+                       $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) 
$(PKG_CONFIG) --libs libpcap 2> /dev/null ) \
                        -lrt \
                        -lpthread \
                        -lm
-- 
2.33.0

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