X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Flibcollectdclient%2Fcollectd%2Fclient.h;h=47462a6ba7884b70385f45d1e275cfed064448e6;hb=e1d4681088e33d3ec256c296dff4dbaeb70b883a;hp=ac26b848e0cbec863f21aaf59a34cef495a0cc2f;hpb=23faf977688c7123d624b2911e69e2c9f4d0f78c;p=collectd.git

diff --git a/src/libcollectdclient/collectd/client.h b/src/libcollectdclient/collectd/client.h
index ac26b848..47462a6b 100644
--- a/src/libcollectdclient/collectd/client.h
+++ b/src/libcollectdclient/collectd/client.h
@@ -29,6 +29,13 @@
 
 #include "lcc_features.h"
 
+/* COLLECTD_TRACE is the environment variable used to control trace output. When
+ * set to something non-zero, all lines sent to / received from the daemon are
+ * printed to STDOUT. */
+#ifndef LCC_TRACE_ENV
+# define LCC_TRACE_ENV "COLLECTD_TRACE"
+#endif
+
 /*
  * Includes (for data types)
  */