diff --git a/bin/content_dns.c b/bin/content_dns.c
index ce7f38b..8635790 100644
--- a/bin/content_dns.c
+++ b/bin/content_dns.c
@@ -206,6 +206,9 @@ int i;
 	for (i=0; i<ancount && p < eod; i++ ) {
 		uint32_t type, class, ttl;
         int32_t len = dn_expand(payload, eod, p, dn, DN_LENGTH);
+		// keep compiler happy
+		UNUSED(class);
+		UNUSED(ttl);
         if(len < 0) {
             LogError("dn_expand() failed: %s", "");
         }
diff --git a/bin/ipfix.c b/bin/ipfix.c
index 01040ac..2152eea 100644
--- a/bin/ipfix.c
+++ b/bin/ipfix.c
@@ -1322,6 +1322,8 @@ uint16_t	offset_std_sampler_interval, offset_std_sampler_algorithm, found_std_sa
 		uint16_t id, length;
 		int Enterprise;
 
+		// keep compiler happy
+		UNUSED(enterprise_value);
 		id 	   = Get_val16(DataPtr); DataPtr += 2;
 		length = Get_val16(DataPtr); DataPtr += 2;
 		size_left -= 4;
diff --git a/bin/nfpcapd.c b/bin/nfpcapd.c
index 9c97258..f48006e 100644
--- a/bin/nfpcapd.c
+++ b/bin/nfpcapd.c
@@ -140,7 +140,7 @@ int verbose = 0;
 
 static const char *nfdump_version = VERSION;
 
-static int launcher_alive, periodic_trigger, launcher_pid;
+static int launcher_pid;
 static pthread_mutex_t  m_done  = PTHREAD_MUTEX_INITIALIZER;
 static pthread_cond_t terminate = PTHREAD_COND_INITIALIZER;
 static pthread_key_t buffer_key;
diff --git a/bin/pcap_reader.c b/bin/pcap_reader.c
index c88d075..6c0c985 100755
--- a/bin/pcap_reader.c
+++ b/bin/pcap_reader.c
@@ -61,7 +61,7 @@
 enum { SRC_IP, DST_IP, UDP_PORT, TCP_PORT, ICMP_TYPE };
 
 static pcap_t	*pcap_handle;
-static uint32_t	tcp_count, udp_count, icmp_count, arp_count, unknow_count;
+static uint32_t	tcp_count, udp_count, arp_count, unknow_count;
 
 /*
  * Function prototypes
diff --git a/bin/profile.c b/bin/profile.c
index fe36aeb..09aad50 100644
--- a/bin/profile.c
+++ b/bin/profile.c
@@ -29,12 +29,6 @@
  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
  *  POSSIBILITY OF SUCH DAMAGE.
  *  
- *  $Author: haag $
- *
- *  $Id: profile.c 41 2009-12-31 14:46:28Z haag $
- *
- *  $LastChangedRevision: 41 $
- *      
  */
 
 #include "config.h"
@@ -357,7 +351,6 @@ void CloseChannels (time_t tslot, int compress) {
 dirstat_t	*dirstat;
 struct stat fstat;
 unsigned int num;
-int ret, update_ok;
 
 	for ( num = 0; num < num_channels; num++ ) {
 		if ( profile_channels[num].ofile ) {
@@ -368,10 +361,7 @@ int ret, update_ok;
 			profile_channels[num].nffile = DisposeFile(profile_channels[num].nffile);
 
 			stat(profile_channels[num].ofile, &fstat);
-
-			ret = ReadStatInfo(profile_channels[num].dirstat_path, &dirstat, CREATE_AND_LOCK);
-			update_ok = ret == STATFILE_OK;
-
+			ReadStatInfo(profile_channels[num].dirstat_path, &dirstat, CREATE_AND_LOCK);
 	
 			if ( rename(profile_channels[num].ofile, profile_channels[num].wfile) < 0 ) {
 				LogError("Failed to rename file %s to %s: %s\n", 
diff --git a/bin/sfcapd.c b/bin/sfcapd.c
index 5e108ee..b2a7b74 100644
--- a/bin/sfcapd.c
+++ b/bin/sfcapd.c
@@ -657,7 +657,6 @@ char	*bindhost, *datadir, pidstr[32], *launch_process;
 char	*userid, *groupid, *checkptr, *listenport, *mcastgroup, *extension_tags;
 char	*Ident, *pcap_file, *time_extension, pidfile[MAXPATHLEN];
 struct stat fstat;
-srecord_t	*commbuff;
 packet_function_t receive_packet;
 send_peer_t  peer;
 FlowSource_t *fs;
@@ -1012,8 +1011,6 @@ int	c;
 			exit(255);
 		}
 
-		commbuff = (srecord_t *)shmem;
-
 		launcher_pid = fork();
 		switch (launcher_pid) {
 			case 0:
diff --git a/bin/sflow.h b/bin/sflow.h
index 7747ccd..085ab3b 100644
--- a/bin/sflow.h
+++ b/bin/sflow.h
@@ -547,6 +547,7 @@ typedef enum {
   SFLAPP_NUM_STATUS_CODES
 } EnumSFLAPPStatus;
 
+#ifdef DEVEL
   static const char *SFL_APP_STATUS_names[] = { "SUCCESS",
 						"OTHER",
 						"TIMEOUT",
@@ -558,6 +559,7 @@ typedef enum {
 						"NOT_FOUND",
 						"UNAVAILABLE",
 						"UNATHORIZED" };
+#endif
 
 /* Operation context */
 typedef struct {
diff --git a/bin/sflow_process.c b/bin/sflow_process.c
index f69905e..5accbff 100644
--- a/bin/sflow_process.c
+++ b/bin/sflow_process.c
@@ -64,18 +64,12 @@
 #include <stdint.h>
 #endif
 
-// #include "sflow.h" /* sFlow v5 */
+#include "sflow.h" /* sFlow v5 */
 #include "sflow_v2v4.h" /* sFlow v2/4 */
 #include "util.h"
 #include "sflow_process.h"
 #include "sflow_nfdump.h"
 
-#ifndef DEVEL
-#   define dbg_printf(...) /* printf(__VA_ARGS__) */
-#else
-#   define dbg_printf(...) printf(__VA_ARGS__)
-#endif
-
 static uint8_t bin2hex(int nib);
 static int printHex(const uint8_t *a, int len, char *buf, int bufLen, int marker, int bytesPerOutputLine);
 static char *IP_to_a(uint32_t ipaddr, char *buf, int buflen);
@@ -1463,17 +1457,19 @@ static void readExtendedWifiRx(SFSample *sample)
 
 static void readExtendedWifiTx(SFSample *sample)
 {
+#ifdef DEVEL
   uint32_t i;
   uint8_t *bssid;
   char ssid[SFL_MAX_SSID_LEN+1];
   if(getString(sample, ssid, SFL_MAX_SSID_LEN) > 0) {
-    dbg_printf("tx_SSID %s\n", ssid);
+    printf("tx_SSID %s\n", ssid);
   }
 
   bssid = (uint8_t *)sample->datap;
-  dbg_printf("tx_BSSID ");
+  printf("tx_BSSID ");
   for(i = 0; i < 6; i++) dbg_printf("%02x", bssid[i]);
-  dbg_printf("\n");
+  printf("\n");
+#endif
   skipBytes(sample, 6);
 
   sf_log_next32(sample, "tx_version");
@@ -1754,6 +1750,12 @@ static void readFlowSample_http(SFSample *sample, uint32_t tag)
   uint32_t status;
   uint64_t resp_bytes;
 
+  // keep compiler happy
+  UNUSED(method);
+  UNUSED(protocol);
+  UNUSED(status);
+  UNUSED(resp_bytes);
+
   dbg_printf("flowSampleType http\n");
   method = sf_log_next32(sample, "http_method");
   protocol = sf_log_next32(sample, "http_protocol");
@@ -1931,6 +1933,9 @@ static void readExtendedProxySocket4(SFSample *sample)
   char buf[51];
 #endif
   SFLAddress ipsrc,ipdst;
+  // keep compiler happy
+  UNUSED(ipsrc);
+  UNUSED(ipdst);
   dbg_printf("extendedType proxy_socket4\n");
   sf_log_next32(sample, "proxy_socket4_ip_protocol");
   ipsrc.type = SFLADDRESSTYPE_IP_V4;
@@ -2028,15 +2033,19 @@ static void readExtendedVNI(SFSample *sample, char *prefix)
 
 static void readExtendedTCPInfo(SFSample *sample)
 {
-  char *direction;
   EnumPktDirection dirn = getData32(sample);
+  UNUSED(dirn); // keep compiler happy
+#ifdef DEVEL
+  char *direction;
   switch(dirn) {
   case PKTDIR_unknown: direction = "unknown"; break;
   case PKTDIR_received: direction = "received"; break;
   case PKTDIR_sent: direction = "sent"; break;
   default: direction = "<bad value>"; break;
   }
-  dbg_printf( "tcpinfo_direction %s\n", direction);
+  printf( "tcpinfo_direction %s\n", direction);
+#endif
+
   sf_log_next32(sample, "tcpinfo_send_mss");
   sf_log_next32(sample, "tcpinfo_receive_mss");
   sf_log_next32(sample, "tcpinfo_unacked_pkts");
diff --git a/bin/util.h b/bin/util.h
index d6fd88e..8641711 100644
--- a/bin/util.h
+++ b/bin/util.h
@@ -1,4 +1,5 @@
 /*
+ *  Copyright (c) 2017, Peter Haag
  *  Copyright (c) 2016, Peter Haag
  *  Copyright (c) 2014, Peter Haag
  *  Copyright (c) 2009, Peter Haag
@@ -54,6 +55,8 @@
 #	define dbg_assert(a) /* assert(a) */
 #endif
 
+#define UNUSED(expr) do { (void)(expr); } while (0)
+
 #define EBUFF_SIZE 256
 
 #ifndef HAVE_HTONLL