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sd-icmp6-nd: Add helper function to get the IPv6 link MTU
[elogind.git]
/
src
/
systemd
/
_sd-common.h
diff --git
a/src/systemd/_sd-common.h
b/src/systemd/_sd-common.h
index 594ff3db2bb15e8e5184fd07e7105a6f86430d68..896a027eb5027a32f1d28a629455518fce60b3d6 100644
(file)
--- a/
src/systemd/_sd-common.h
+++ b/
src/systemd/_sd-common.h
@@
-22,7
+22,11
@@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-/* This is a private header, never even think of including this directly! */
+/* This is a private header; never even think of including this directly! */
+
+#if __INCLUDE_LEVEL__ <= 1
+#error "Do not include _sd-common.h directly; it is a private header."
+#endif
#ifndef _sd_printf_
# if __GNUC__ >= 4
#ifndef _sd_printf_
# if __GNUC__ >= 4