[LEDE-DEV] [PATCH] odhcp6c: Replace strerror(errno) with %m

[Rosen Penev]

Reduction of 48 bytes in compiled size. No functional difference.

-pedantic was removed as %m is a GNU extension.

Signed-off-by: Rosen Penev <rosenp at gmail.com>
---
 CMakeLists.txt | 2 +-
 src/dhcpv6.c   | 4 ++--
 src/odhcp6c.c  | 5 ++---
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a5b0cb3..c80c32a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ cmake_policy(SET CMP0015 NEW)
 project(odhcp6c C)
 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -std=c99")
-add_definitions(-D_GNU_SOURCE -Wall -Werror -Wextra -pedantic)
+add_definitions(-D_GNU_SOURCE -Wall -Werror -Wextra)
 
 if(${EXT_PREFIX_CLASS})
 	add_definitions(-DEXT_PREFIX_CLASS=${EXT_PREFIX_CLASS})
diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index 9dce577..0944dd2 100644
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -522,9 +522,9 @@ static void dhcpv6_send(enum dhcpv6_msg type, uint8_t trid[3], uint32_t ecs)
 	if (sendmsg(sock, &msg, 0) < 0) {
 		char in6_str[INET6_ADDRSTRLEN];
 
-		syslog(LOG_ERR, "Failed to send DHCPV6 message to %s (%s)",
+		syslog(LOG_ERR, "Failed to send DHCPV6 message to %s (%m)",
 			inet_ntop(AF_INET6, (const void *)&srv.sin6_addr,
-				in6_str, sizeof(in6_str)), strerror(errno));
+				in6_str, sizeof(in6_str)));
 	}
 }
 
diff --git a/src/odhcp6c.c b/src/odhcp6c.c
index 666af5c..a14c22e 100644
--- a/src/odhcp6c.c
+++ b/src/odhcp6c.c
@@ -255,15 +255,14 @@ int main(_unused int argc, char* const argv[])
 			init_dhcpv6(ifname, client_options, sol_timeout) ||
 			ra_init(ifname, &ifid, ra_options, ra_holdoff_interval) ||
 			script_init(script, ifname)) {
-		syslog(LOG_ERR, "failed to initialize: %s", strerror(errno));
+		syslog(LOG_ERR, "failed to initialize: %m");
 		return 3;
 	}
 
 	if (daemonize) {
 		openlog("odhcp6c", LOG_PID, LOG_DAEMON); // Disable LOG_PERROR
 		if (daemon(0, 0)) {
-			syslog(LOG_ERR, "Failed to daemonize: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Failed to daemonize: %m");
 			return 4;
 		}
 
-- 
2.7.4