netdev - [PATCH iproute2] Use libbsd for strlcpy if available

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Date:   Mon, 29 Oct 2018 10:46:50 +0000
From:   Luca Boccassi <bluca@...ian.org>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, dsahern@...il.com
Subject: [PATCH iproute2] Use libbsd for strlcpy if available

If libc does not provide strlcpy check for libbsd with pkg-config to
avoid relying on inline version.

Signed-off-by: Luca Boccassi <bluca@...ian.org>
---
This allows distro maintainers to be able to choose to reduce
duplication and let this code be maintained in one place, in the
external library.

 configure | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 744d6282..1dd9ce84 100755
--- a/configure
+++ b/configure
@@ -330,8 +330,16 @@ EOF
     then
 	echo "no"
     else
-	echo 'CFLAGS += -DNEED_STRLCPY' >>$CONFIG
-	echo "yes"
+	if ${PKG_CONFIG} libbsd --exists
+	then
+		echo 'CFLAGS += -include' `${PKG_CONFIG} libbsd --variable=includedir`'/bsd/string.h' \
+			`${PKG_CONFIG} libbsd --cflags` >>$CONFIG
+		echo 'LDLIBS +=' `${PKG_CONFIG} libbsd --libs` >> $CONFIG
+		echo "no"
+	else
+		echo 'CFLAGS += -DNEED_STRLCPY' >>$CONFIG
+		echo "yes"
+	fi
     fi
     rm -f $TMPDIR/strtest.c $TMPDIR/strtest
 }
-- 
2.19.1