--- a/src/portmon.c
+++ b/src/portmon.c
@@ -35,6 +35,15 @@
 #include <getopt.h>
 #endif
 
+int report_flag;
+int daemonize_flag;
+
+struct host_struct *hosts;
+char *err_msg;
+char logfile[STRLARGE];
+int timeout;
+int verbose;
+
 void version(void)
 {
  printf("This is %s, version %s\n", PACKAGE, VERSION);
--- a/src/portmon.h
+++ b/src/portmon.h
@@ -31,8 +31,8 @@
 #define STRLARGE 512
 
 // flags
-int report_flag;
-int daemonize_flag;
+extern int report_flag;
+extern int daemonize_flag;
 
 struct port
 {
@@ -43,7 +43,7 @@
 };
 
 // create an array of hosts
-struct host_struct
+extern struct host_struct
 {
   char name[STRMED];
   struct port ports[STRSMALL];
@@ -52,13 +52,13 @@
  *hosts;
 
 // place to hold error messages
-char *err_msg;
+extern char *err_msg;
 // place we log crap
-char logfile[STRLARGE];
+extern char logfile[STRLARGE];
 // timeout (seconds)
-int timeout;
+extern int timeout;
 // verbose mode
-int verbose;
+extern int verbose;
 
 // Functions in various files