X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsystemd%2F_sd-common.h;h=896a027eb5027a32f1d28a629455518fce60b3d6;hp=594ff3db2bb15e8e5184fd07e7105a6f86430d68;hb=c75a803944547880dd0cf6275aa170acac27844e;hpb=98f91566cc7d43c6b86a711fa1d196ed5876b2f3

diff --git a/src/systemd/_sd-common.h b/src/systemd/_sd-common.h
index 594ff3db2..896a027eb 100644
--- 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/>.
 ***/
 
-/* 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