README.Debian: myplugin.c has to be compiled using -DHAVE_CONFIG_H.

diff --git a/debian/README.Debian b/debian/README.Debian
index 4c22f5edcdb0546be2528b5ab41148f56b1bb16d..273216a3c4bc73a8193f8871bad6cb44586a2404 100644 (file)
--- a/debian/README.Debian
+++ b/debian/README.Debian
@@ -74,7 +74,7 @@ Building your own plugins:
 
   The resulting file can be compiled as follows:
 
-    gcc -shared -fPIC -o myplugin.so myplugin.c
+    gcc -DHAVE_CONFIG_H -shared -fPIC -o myplugin.so myplugin.c
 
   Copy myplugin.so to /usr/lib/collectd and add the following line to your
   collectd config file: