improve smoke test

Related: #2182490

tests/smoke/runtest.sh

@@ -1,9 +1,27 @@
 #!/bin/bash
 
-set -ex
+set -e
 
-for b in gpsd gpscat gpspipe cgps gpsfake ubxtool; do
-	$b --help |& grep -i ^usage:
+r=0
+
+executables=$(rpm -ql gpsd-minimal gpsd-minimal-clients | grep -E '/s?bin/')
+for b in $executables; do
+	case "$(basename "$b")" in
+		gpsdebuginfo)
+			continue;;
+		zerk)
+			h="-h";;
+		*)
+			h="--help";;
+	esac
+
+	if "$b" "$h" |& grep -qi '^usage *:'; then
+		echo "$b OK"
+	else
+		echo "$b FAILED"
+		"$b" "$h" || :
+		r=1
+	fi
 done
 
-exit 0
+exit $r