Print svn rev number as part of usage()

relay/Makefile

@@ -28,7 +28,7 @@ SRC = xwrelay.cpp \
 
 OBJ = $(patsubst %.cpp,%.o,$(SRC))
 LDFLAGS += -pthread -g -lmcheck
-CPPFLAGS += -g -Wall
+CPPFLAGS += -g -Wall -DSVN_REV=\"$(shell svnversion -n .)\"
 # turn on semaphore debugging
 # CPPFLAGS += -DDEBUG_LOCKS
 

relay/xwrelay.cpp

@@ -414,6 +414,7 @@ usage( char* arg0 )
              "\t-p <port>            (port to listen on)\\\n"
              "\t-t <nWorkerThreads>  (how many worker threads to use)\\\n"
              );
+    fprintf( stderr, "svn rev. %s\n", SVN_REV );
 }
 
 /* sockets that need to be closable from interrupt handler */