Index: trunk/src_plugins/ar_extern/ar_extern.conf
===================================================================
--- trunk/src_plugins/ar_extern/ar_extern.conf	(revision 35621)
+++ trunk/src_plugins/ar_extern/ar_extern.conf	(revision 35622)
@@ -7,11 +7,13 @@
 					debug = 0
 				}
 				ha:freerouting_cli {
-					exe = freerouting.cli
+					installation = /opt/freerouting.cli
+					exe = bin/Freerouting
 					debug = 0
 				}
 				ha:freerouting_net {
-					exe = freerouting.net
+					installation = /opt/freerouting.net
+					exe = bin/Freerouting
 					debug = 0
 				}
 			}
Index: trunk/src_plugins/ar_extern/ar_extern_conf.h
===================================================================
--- trunk/src_plugins/ar_extern/ar_extern_conf.h	(revision 35621)
+++ trunk/src_plugins/ar_extern/ar_extern_conf.h	(revision 35622)
@@ -11,11 +11,13 @@
 				RND_CFT_BOOLEAN debug;
 			} route_rnd;
 			const struct freerouting_cli {
-				RND_CFT_STRING exe;
+				RND_CFT_STRING installation;  /* path to the installation directory (normally has bin/ and lib/) */
+				RND_CFT_STRING exe;           /* relative path from the installation dir to the Freerouting executable */
 				RND_CFT_BOOLEAN debug;
 			} freerouting_cli;
 			const struct freerouting_net {
-				RND_CFT_STRING exe;
+				RND_CFT_STRING installation;  /* path to the installation directory (normally has bin/ and lib/) */
+				RND_CFT_STRING exe;           /* relative path from the installation dir to the Freerouting executable */
 				RND_CFT_BOOLEAN debug;
 			} freerouting_net;
 		} ar_extern;
Index: trunk/src_plugins/ar_extern/e_freerouting.c
===================================================================
--- trunk/src_plugins/ar_extern/e_freerouting.c	(revision 35621)
+++ trunk/src_plugins/ar_extern/e_freerouting.c	(revision 35622)
@@ -31,8 +31,9 @@
 	const char *route_req = "freert.dsn", *route_res = "freert.ses";
 	rnd_hidlib_t *hl = &pcb->hidlib;
 	char *cmd;
-	int n, r, sargc, rv = 1, mp = 12;
+	int n, r, sargc, rv = 1, mp = 12, debug;
 	fgw_arg_t sres = {0}, *sargv;
+	const char *exe, *installation;
 
 	sargc = argc + 3;
 	sargv = calloc(sizeof(fgw_arg_t), sargc);
@@ -45,11 +46,19 @@
 		sargv[n+3].type &= ~FGW_DYN;
 	}
 
+	exe = conf_ar_extern.plugins.ar_extern.freerouting_cli.exe;
+	installation = conf_ar_extern.plugins.ar_extern.freerouting_cli.installation;
+	debug = conf_ar_extern.plugins.ar_extern.freerouting_cli.debug;
+
 	/* export */
 	TODO("call the exporter");
 
 	/* run the router */
-	cmd = rnd_strdup_printf("%s -cli -de '%s' -do '%s' -mp %d", conf_ar_extern.plugins.ar_extern.freerouting_cli.exe, route_req, route_res, mp);
+	if ((installation != NULL) && (*installation != '\0'))
+		cmd = rnd_strdup_printf("cd \"%s\"; %s -cli -de '%s' -do '%s' -mp %d", installation, exe, route_req, route_res, mp);
+	else
+		cmd = rnd_strdup_printf("%s -cli -de '%s' -do '%s' -mp %d", exe, route_req, route_res, mp);
+
 	r = rnd_system(hl, cmd);
 	if (r != 0) {
 		rnd_message(RND_MSG_ERROR, "freerouting.cli: failed to execute the router: '%s'\n", cmd);
@@ -68,7 +77,7 @@
 	rv = 0; /* success! */
 
 	exit:;
-	if (!conf_ar_extern.plugins.ar_extern.freerouting_cli.debug) {
+	if (!debug) {
 		rnd_unlink(hl, route_req);
 		rnd_unlink(hl, route_res);
 	}