diff --git a/aclients.c b/aclients.c
index 1561e1f..28b7cf3 100644
--- a/aclients.c
+++ b/aclients.c
@@ -59,8 +59,6 @@
 #include <ws2tcpip.h>  		// _WIN32_WINNT must be set to 0x0501 before including this
 
 #else 
-//#define __USE_XOPEN2KXSI 1
-//#define __USE_XOPEN 1
 #include <stdlib.h>
 #include <netdb.h>
 #include <sys/types.h>
@@ -466,7 +464,11 @@ static void * client_thread_net (void *arg)
 	// Try each address until we find one that is successful.
 
 	for (n=0; n<num_hosts; n++) {
+#if __WIN32__
+	  SOCKET is;
+#else
 	  int is;
+#endif
 
 	  ai = hosts[n];
 
@@ -576,7 +578,7 @@ static void * client_thread_net (void *arg)
 	  printf ("client %d received '%c' data, data_len = %d\n", 
 			my_index, mon_cmd.kind_lo, mon_cmd.data_len);
 #endif
-	  assert (mon_cmd.data_len >= 0 && mon_cmd.data_len < sizeof(data));
+	  assert (mon_cmd.data_len >= 0 && mon_cmd.data_len < (int)(sizeof(data)));
 
 	  if (mon_cmd.data_len > 0) {
 #if __WIN32__
diff --git a/aprs_tt.c b/aprs_tt.c
index 513095f..cf00cc8 100644
--- a/aprs_tt.c
+++ b/aprs_tt.c
@@ -1447,7 +1447,7 @@ static int find_ttloc_match (char *e, char *xstr, char *ystr, char *zstr, char *
 	  
 	  len = strlen(tt_config.ttloc_ptr[ipat].pattern);
 
-	  if (strlen(e) == len) {
+	  if ((int)(strlen(e)) == len) {
 
 	    match = 1;
 	    strlcpy (xstr, "", valstrsize);
diff --git a/audio.c b/audio.c
index 667f8b1..a27bc39 100644
--- a/audio.c
+++ b/audio.c
@@ -375,8 +375,8 @@ int audio_open (struct audio_s *pa)
 	    
 	        {
 	          struct sockaddr_in si_me;
-	          int slen=sizeof(si_me);
-	          int data_size = 0;
+	          //int slen=sizeof(si_me);
+	          //int data_size = 0;
 
 	          //Create UDP Socket
 	          if ((adev[a].udp_sock=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1) {
@@ -1003,7 +1003,7 @@ int audio_get (int a)
 	  case AUDIO_IN_TYPE_SDR_UDP:
 
 	    while (adev[a].inbuf_next >= adev[a].inbuf_len) {
-	      int ch, res,i;
+	      int res;
 
               assert (adev[a].udp_sock > 0);
 	      res = recv(adev[a].udp_sock, adev[a].inbuf_ptr, adev[a].inbuf_size_in_bytes, 0);
@@ -1038,7 +1038,8 @@ int audio_get (int a)
 	  case AUDIO_IN_TYPE_STDIN:
 
 	    while (adev[a].inbuf_next >= adev[a].inbuf_len) {
-	      int ch, res,i;
+	      //int ch, res,i;
+	      int res;
 
 	      res = read(STDIN_FILENO, adev[a].inbuf_ptr, (size_t)adev[a].inbuf_size_in_bytes);
 	      if (res <= 0) {
diff --git a/audio_win.c b/audio_win.c
index 432f554..5cbb39b 100644
--- a/audio_win.c
+++ b/audio_win.c
@@ -287,7 +287,7 @@ int audio_open (struct audio_s *pa)
 
 	    A->udp_sock = INVALID_SOCKET;
 
-	    in_dev_no[a] = WAVE_MAPPER;	/* = -1 */
+	    in_dev_no[a] = WAVE_MAPPER;	/* = ((UINT)-1) in mmsystem.h */
 	    out_dev_no[a] = WAVE_MAPPER;
 
 /*
@@ -320,16 +320,16 @@ int audio_open (struct audio_s *pa)
 
 	      /* Otherwise, does it have search string? */
 
-	      if (in_dev_no[a] == WAVE_MAPPER && strlen(pa->adev[a].adevice_in) >= 1) {
+	      if ((UINT)(in_dev_no[a]) == WAVE_MAPPER && strlen(pa->adev[a].adevice_in) >= 1) {
 	        num_devices = waveInGetNumDevs();
-	        for (n=0 ; n<num_devices && in_dev_no[a] == WAVE_MAPPER ; n++) {
+	        for (n=0 ; n<num_devices && (UINT)(in_dev_no[a]) == WAVE_MAPPER ; n++) {
 	          if ( ! waveInGetDevCaps(n, &wic, sizeof(WAVEINCAPS))) {
 	            if (strstr(wic.szPname, pa->adev[a].adevice_in) != NULL) {
 	              in_dev_no[a] = n;
 	            }
 	          }
 	        }
-	        if (in_dev_no[a] == WAVE_MAPPER) {
+	        if ((UINT)(in_dev_no[a]) == WAVE_MAPPER) {
 	          text_color_set(DW_COLOR_ERROR);
 	          dw_printf ("\"%s\" doesn't match any of the input devices.\n", pa->adev[a].adevice_in);
 	        }
@@ -345,16 +345,16 @@ int audio_open (struct audio_s *pa)
 	      out_dev_no[a] = atoi(pa->adev[a].adevice_out);
 	    }
 
-	    if (out_dev_no[a] == WAVE_MAPPER && strlen(pa->adev[a].adevice_out) >= 1) {
+	    if ((UINT)(out_dev_no[a]) == WAVE_MAPPER && strlen(pa->adev[a].adevice_out) >= 1) {
 	      num_devices = waveOutGetNumDevs();
-	      for (n=0 ; n<num_devices && out_dev_no[a] == WAVE_MAPPER ; n++) {
+	      for (n=0 ; n<num_devices && (UINT)(out_dev_no[a]) == WAVE_MAPPER ; n++) {
 	        if ( ! waveOutGetDevCaps(n, &woc, sizeof(WAVEOUTCAPS))) {
 	          if (strstr(woc.szPname, pa->adev[a].adevice_out) != NULL) {
 	            out_dev_no[a] = n;
 	          }
 	        }
 	      }
-	      if (out_dev_no[a] == WAVE_MAPPER) {
+	      if ((UINT)(out_dev_no[a]) == WAVE_MAPPER) {
 	        text_color_set(DW_COLOR_ERROR);
 	        dw_printf ("\"%s\" doesn't match any of the output devices.\n", pa->adev[a].adevice_out);
 	      }
@@ -799,7 +799,7 @@ int audio_get (int a)
 
 	      p = (WAVEHDR*)(A->in_headp);		/* no need to be volatile at this point */
 
-	      if (p->dwUser == -1) {
+	      if (p->dwUser == (DWORD)(-1)) {
 	        waveInUnprepareHeader(A->audio_in_handle, p, sizeof(WAVEHDR));
 	        p->dwUser = 0;	/* Index for next byte. */
 
@@ -960,11 +960,11 @@ int audio_put (int a, int c)
 	/* Should never be full at this point. */
 
 	assert (p->dwBufferLength >= 0);
-	assert (p->dwBufferLength < A->outbuf_size);
+	assert (p->dwBufferLength < (DWORD)(A->outbuf_size));
 
 	p->lpData[p->dwBufferLength++] = c;
 
-	if (p->dwBufferLength == A->outbuf_size) {
+	if (p->dwBufferLength == (DWORD)(A->outbuf_size)) {
 	  return (audio_flush(a));
 	}
 
diff --git a/ax25_link.c b/ax25_link.c
index b15bdd9..324334f 100644
--- a/ax25_link.c
+++ b/ax25_link.c
@@ -1193,7 +1193,7 @@ void dl_data_request (dlq_item_t *E)
 	first_segment.original_pid = E->txdata->pid;
 	seglen = MIN(S->n1_paclen - 2, remaining_len);
 
-	if (seglen < 1 || seglen > S->n1_paclen - 2 || seglen > remaining_len || seglen > sizeof (first_segment.segdata)) {
+	if (seglen < 1 || seglen > S->n1_paclen - 2 || seglen > remaining_len || seglen > (int)(sizeof(first_segment.segdata))) {
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("INTERNAL ERROR, Segmentation line %d, data length = %d, N1 = %d, segment length = %d, number to follow = %d\n",
 					__LINE__, E->txdata->len, S->n1_paclen, seglen, nseg_to_follow);
@@ -1225,7 +1225,7 @@ void dl_data_request (dlq_item_t *E)
 	  subsequent_segment.header = nseg_to_follow;
 	  seglen = MIN(S->n1_paclen - 1, remaining_len);
 
-	  if (seglen < 1 || seglen > S->n1_paclen - 1 || seglen > remaining_len || seglen > sizeof (subsequent_segment.segdata)) {
+	  if (seglen < 1 || seglen > S->n1_paclen - 1 || seglen > remaining_len || seglen > (int)(sizeof(subsequent_segment.segdata))) {
 	    text_color_set(DW_COLOR_ERROR);
 	    dw_printf ("INTERNAL ERROR, Segmentation line %d, data length = %d, N1 = %d, segment length = %d, number to follow = %d\n",
 					__LINE__, E->txdata->len, S->n1_paclen, seglen, nseg_to_follow);
@@ -1928,7 +1928,7 @@ void lm_data_indication (dlq_item_t *E)
 
 // Gather statistics useful for testing.
 
-	if (ftype >= 0 && ftype <= frame_not_AX25) {
+	if (ftype <= frame_not_AX25) {
 	  S->count_recv_frame_type[ftype]++;
 	}
 
@@ -6083,7 +6083,7 @@ static void negotiation_response (ax25_dlsm_t *S, struct xid_param_s *param)
 // Other end might want 8.
 // Seems unlikely.  If it implements XID it should have modulo 128.
 
-	if (param->modulo == G_UNKNOWN) {
+	if (param->modulo == modulo_unknown) {
 	  param->modulo = 8;			// Not specified.  Set default.
 	}
 	else {
@@ -6094,7 +6094,7 @@ static void negotiation_response (ax25_dlsm_t *S, struct xid_param_s *param)
 // Erratum:  2006 version, section, 4.3.3.7 says default selective reject - reject.
 // We can't do that.
 
-	if (param->rej == G_UNKNOWN) {
+	if (param->rej == unknown_reject) {
 	  param->rej = (param->modulo == 128) ? selective_reject : implicit_reject;	// not specified, set default
 	}
 	else {
@@ -6166,11 +6166,11 @@ static void negotiation_response (ax25_dlsm_t *S, struct xid_param_s *param)
 
 static void complete_negotiation (ax25_dlsm_t *S, struct xid_param_s *param)
 {
-	if (param->rej != G_UNKNOWN) {
+	if (param->rej != unknown_reject) {
 	  S->srej_enabled = param->rej >= selective_reject;
 	}
 
-	if (param->modulo != G_UNKNOWN) {
+	if (param->modulo != modulo_unknown) {
 	  // Disaster if aren't agreeing on this.
 	  S->modulo = param->modulo;
 	}
diff --git a/ax25_pad.c b/ax25_pad.c
index 8b34051..aceeee4 100644
--- a/ax25_pad.c
+++ b/ax25_pad.c
@@ -170,10 +170,6 @@
 #include <assert.h>
 #include <stdio.h>
 #include <ctype.h>
-#ifndef _POSIX_C_SOURCE
-
-#define _POSIX_C_SOURCE 1
-#endif
 
 #include "regex.h"
 
diff --git a/ax25_pad.h b/ax25_pad.h
index 075ac2a..51d3a20 100644
--- a/ax25_pad.h
+++ b/ax25_pad.h
@@ -283,7 +283,7 @@ static inline int ax25_get_num_info (packet_t this_p)
 #endif
 
 
-typedef enum ax25_modulo_e { modulo_8 = 8, modulo_128 = 128 } ax25_modulo_t;
+typedef enum ax25_modulo_e { modulo_unknown = 0, modulo_8 = 8, modulo_128 = 128 } ax25_modulo_t;
 
 typedef enum ax25_frame_type_e {
 
diff --git a/ax25_pad2.c b/ax25_pad2.c
index 48a7df8..7c37dbf 100644
--- a/ax25_pad2.c
+++ b/ax25_pad2.c
@@ -207,7 +207,7 @@ packet_t ax25_u_frame (char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LEN], int num_ad
 	packet_t this_p;
 	unsigned char *p;
 	int ctrl = 0;
-	int t = -1;		// 1 = must be cmd, 0 = must be response, 2 = can be either.
+	unsigned int t = 999;	// 1 = must be cmd, 0 = must be response, 2 = can be either.
 	int i = 0;		// Is Info part allowed?
 
 	this_p = ax25_new ();
diff --git a/decode_aprs.c b/decode_aprs.c
index b1643cf..23d5e4b 100644
--- a/decode_aprs.c
+++ b/decode_aprs.c
@@ -45,9 +45,6 @@
 #include <ctype.h>	/* for isdigit */
 #include <fcntl.h>
 
-#ifndef _POSIX_C_SOURCE
-#define _POSIX_C_SOURCE 1
-#endif
 #include "regex.h"
 
 #include "ax25_pad.h"
@@ -640,14 +637,14 @@ void decode_aprs_print (decode_aprs_t *A) {
 	  if ( ! A->g_quiet) {
 
 	    for (j=0; j<n; j++) {
-	      if ((unsigned)A->g_comment[j] == (char)0xb0 &&  (j == 0 || ! (A->g_comment[j-1] & 0x80))) {
+	      if ((unsigned char)(A->g_comment[j]) == 0xb0 &&  (j == 0 || ! (A->g_comment[j-1] & 0x80))) {
 	        text_color_set(DW_COLOR_ERROR);
 	        dw_printf("Character code 0xb0 is probably an attempt at a degree symbol.\n");
 	        dw_printf("The correct encoding is 0xc2 0xb0 in UTF-8.\n");
 	      }	    	
 	    }
 	    for (j=0; j<n; j++) {
-	      if ((unsigned)A->g_comment[j] == (char)0xf8 && (j == n-1 || (A->g_comment[j+1] & 0xc0) != 0xc0)) {
+	      if ((unsigned char)(A->g_comment[j]) == 0xf8 && (j == n-1 || (A->g_comment[j+1] & 0xc0) != 0xc0)) {
 	        text_color_set(DW_COLOR_ERROR);
 	        dw_printf("Character code 0xf8 is probably an attempt at a degree symbol.\n");
 	        dw_printf("The correct encoding is 0xc2 0xb0 in UTF-8.\n");	    	
@@ -4103,7 +4100,7 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
  * digipeated, causing the comment to be hundreds of characters long.
  */
 
-	if (clen > sizeof(A->g_comment) - 1) {
+	if (clen > (int)(sizeof(A->g_comment) - 1)) {
 	  if ( ! A->g_quiet) {
 	    text_color_set(DW_COLOR_ERROR);
 	    dw_printf("Comment is extremely long, %d characters.\n", clen);
diff --git a/demod.c b/demod.c
index 808928b..0022254 100644
--- a/demod.c
+++ b/demod.c
@@ -184,7 +184,7 @@ int demod_init (struct audio_s *pa)
 	        }
 	      }
 
-	      assert (num_letters == strlen(just_letters));
+	      assert (num_letters == (int)(strlen(just_letters)));
 
 /*
  * Pick a good default demodulator if none specified. 
@@ -222,7 +222,7 @@ int demod_init (struct audio_s *pa)
 	      }
 
 
-	      assert (num_letters == strlen(just_letters));
+	      assert (num_letters == (int)(strlen(just_letters)));
 
 /*
  * Put it back together again.
diff --git a/demod_9600.c b/demod_9600.c
index be1826d..58c4c04 100644
--- a/demod_9600.c
+++ b/demod_9600.c
@@ -261,7 +261,7 @@ void demod_9600_init (int samples_per_sec, int baud, struct demodulator_state_s
  *
  *--------------------------------------------------------------------*/
 
-static void inline nudge_pll (int chan, int subchan, int slice, float demod_out, struct demodulator_state_s *D);
+inline static void nudge_pll (int chan, int subchan, int slice, float demod_out, struct demodulator_state_s *D);
 
 __attribute__((hot))
 void demod_9600_process_sample (int chan, int sam, struct demodulator_state_s *D)
@@ -484,7 +484,7 @@ void demod_9600_process_sample (int chan, int sam, struct demodulator_state_s *D
  *--------------------------------------------------------------------*/
 
 __attribute__((hot))
-static void inline nudge_pll (int chan, int subchan, int slice, float demod_out_f, struct demodulator_state_s *D)
+inline static void nudge_pll (int chan, int subchan, int slice, float demod_out_f, struct demodulator_state_s *D)
 {
 
 /*
diff --git a/demod_afsk.c b/demod_afsk.c
index 67499a4..e8252db 100644
--- a/demod_afsk.c
+++ b/demod_afsk.c
@@ -63,7 +63,7 @@
 #define MAX(a,b) ((a)>(b)?(a):(b))
 
 
-
+#ifndef GEN_FFF
 
 /* Quick approximation to sqrt(x*x+y*y) */
 /* No benefit for regular PC. */
@@ -137,6 +137,8 @@ static inline float agc (float in, float fast_attack, float slow_decay, float *p
 	return (0.0f);
 }
 
+#endif	// ifndef GEN_FFF
+
 
 /*
  * for multi-slicer experiment.
@@ -806,7 +808,7 @@ int main (void)
  *
  *--------------------------------------------------------------------*/
 
-static void inline nudge_pll (int chan, int subchan, int slice, int demod_data, struct demodulator_state_s *D);
+inline static void nudge_pll (int chan, int subchan, int slice, int demod_data, struct demodulator_state_s *D);
 
 __attribute__((hot))
 void demod_afsk_process_sample (int chan, int subchan, int sam, struct demodulator_state_s *D)
@@ -1086,7 +1088,7 @@ void demod_afsk_process_sample (int chan, int subchan, int sam, struct demodulat
 
 
 __attribute__((hot))
-static void inline nudge_pll (int chan, int subchan, int slice, int demod_data, struct demodulator_state_s *D)
+inline static void nudge_pll (int chan, int subchan, int slice, int demod_data, struct demodulator_state_s *D)
 {
 
 /*
diff --git a/demod_psk.c b/demod_psk.c
index 940c115..db9407a 100644
--- a/demod_psk.c
+++ b/demod_psk.c
@@ -579,7 +579,7 @@ void demod_psk_init (enum modem_t modem_type, int samples_per_sec, int bps, char
 
 
 
-static void inline nudge_pll (int chan, int subchan, int slice, int demod_bits, struct demodulator_state_s *D);
+inline static void nudge_pll (int chan, int subchan, int slice, int demod_bits, struct demodulator_state_s *D);
 
 __attribute__((hot))
 void demod_psk_process_sample (int chan, int subchan, int sam, struct demodulator_state_s *D)
@@ -758,7 +758,7 @@ static const int phase_to_gray_v27[8] = {1, 0, 2, 3, 7, 6, 4, 5};
 
 
 __attribute__((hot))
-static void inline nudge_pll (int chan, int subchan, int slice, int demod_bits, struct demodulator_state_s *D)
+inline static void nudge_pll (int chan, int subchan, int slice, int demod_bits, struct demodulator_state_s *D)
 {
 
 /*
diff --git a/dtmf.c b/dtmf.c
index 2f3709c..031946e 100644
--- a/dtmf.c
+++ b/dtmf.c
@@ -32,6 +32,8 @@
  * References:	http://eetimes.com/design/embedded/4024443/The-Goertzel-Algorithm
  * 		http://www.ti.com/ww/cn/uprogram/share/ppt/c5000/17dtmf_v13.ppt
  *
+ * Revisions:	1.4 - Added transmit capability.
+ *
  *---------------------------------------------------------------*/
 
 #include "direwolf.h"
@@ -107,7 +109,7 @@ static void push_button (int chan, char button, int ms);
  *
  *		amp		- Signal amplitude, for transmit, on scale of 0 .. 100.
  *
- *				  100 will produce maximum amplitude of +-32k samples. 
+ *				  100 will produce maximum amplitude of +-32k samples.
  *
  * Returns:     None.
  *
@@ -338,8 +340,8 @@ char dtmf_sample (int c, float input)
  *		str	- Character string to send.  0-9, A-D, *, #
  *		speed	- Number of tones per second.  Range 1 to 10.
  *		txdelay	- Delay (ms) from PTT to start.
- *		txtail	- Delay (ms) from end to PTT off.	
- *		
+ *		txtail	- Delay (ms) from end to PTT off.
+ *
  * Returns:	Total number of milliseconds to activate PTT.
  *		This includes delays before the first tone
  *		and after the last to avoid chopping off part of it.
@@ -353,7 +355,7 @@ int dtmf_send (int chan, char *str, int speed, int txdelay, int txtail)
 {
 	char *p;
 	int len_ms;	// Length of tone or gap between.
-	
+
 	len_ms = (int) ( ( 500.0f / (float)speed ) + 0.5f);
 
 	push_button (chan, ' ', txdelay);
diff --git a/dwgpsd.c b/dwgpsd.c
index 3138800..5709497 100644
--- a/dwgpsd.c
+++ b/dwgpsd.c
@@ -75,6 +75,7 @@ static struct gps_data_t gpsdata;
 #include "dwgpsd.h"
 
 
+#if ENABLE_GPSD
 
 static int s_debug = 0;		/* Enable debug output. */
 				/* >= 1 show results from dwgps_read. */
@@ -82,6 +83,7 @@ static int s_debug = 0;		/* Enable debug output. */
 
 static void * read_gpsd_thread (void *arg);
 
+#endif
 
 
 
@@ -157,7 +159,6 @@ int dwgpsd_init (struct misc_config_s *pconfig, int debug)
 	int err;
 	int arg = 0;
 	char sport[12];
-	dwgps_info_t info;
 
 	s_debug = debug;
 
@@ -179,7 +180,6 @@ int dwgpsd_init (struct misc_config_s *pconfig, int debug)
 	snprintf (sport, sizeof(sport), "%d", pconfig->gpsd_port);
 	err = gps_open (pconfig->gpsd_host, sport, &gpsdata);
 	if (err != 0) {
-	  dwgps_info_t info;
 
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("Unable to connect to GPSD stream at %s:%s.\n", pconfig->gpsd_host, sport);
@@ -335,7 +335,7 @@ static void * read_gpsd_thread (void *arg)
 
 	return(0);	// Terminate thread on serious error.
 
-} /* end read_gps_thread */
+} /* end read_gpsd_thread */
 
 #endif
 
diff --git a/dwgpsnmea.c b/dwgpsnmea.c
index fc53575..6ce6963 100644
--- a/dwgpsnmea.c
+++ b/dwgpsnmea.c
@@ -108,7 +108,7 @@ int dwgpsnmea_init (struct misc_config_s *pconfig, int debug)
 	HANDLE read_gps_th;
 #else
 	pthread_t read_gps_tid;
-	int e;
+	//int e;
 #endif
 
 	s_debug = debug;
diff --git a/encode_aprs.c b/encode_aprs.c
index a2afff6..f46bca8 100644
--- a/encode_aprs.c
+++ b/encode_aprs.c
@@ -599,7 +599,7 @@ int encode_position (int messaging, int compressed, double lat, double lon, int
 	  result_len += strlen(comment);
 	}
 
-	if (result_len >= result_size) {
+	if (result_len >= (int)result_size) {
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("encode_position result of %d characters won't fit into space provided.\n", result_len);
 	}
@@ -683,7 +683,7 @@ int encode_object (char *name, int compressed, time_t thyme, double lat, double
 
 	memset (p->o.name, ' ', sizeof(p->o.name));
 	n = strlen(name);
-	if (n > sizeof(p->o.name)) n = sizeof(p->o.name);
+	if (n > (int)(sizeof(p->o.name))) n = sizeof(p->o.name);
 	memcpy (p->o.name, name, n);
 
 	p->o.live_killed = '*';
@@ -749,7 +749,7 @@ int encode_object (char *name, int compressed, time_t thyme, double lat, double
 	  result_len += strlen(comment);
 	}
 
-	if (result_len >= result_size) {
+	if (result_len >= (int)result_size) {
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("encode_object result of %d characters won't fit into space provided.\n", result_len);
 	}
diff --git a/geotranz/usng.c b/geotranz/usng.c
index dbce146..3db24b3 100644
--- a/geotranz/usng.c
+++ b/geotranz/usng.c
@@ -577,6 +577,9 @@ long UTM_To_USNG (long Zone,
     Northing = 0.0;
   }
 
+  ltr2_low_value = LETTER_A;	// Make compiler shut up about possibly uninitialized value.
+				// It should be set by the following but compiler doesn't know.
+
   USNG_Get_Grid_Values(Zone, &ltr2_low_value, &ltr2_high_value, &pattern_offset);
 
   error_code = USNG_Get_Latitude_Letter(Latitude, &letters[0]);
@@ -960,6 +963,9 @@ long Convert_USNG_To_UTM (char   *USNG,
         else
           *Hemisphere = 'N';
 
+        ltr2_low_value = LETTER_A;	// Make compiler shut up about possibly uninitialized values.
+	ltr2_high_value = LETTER_Z;	// They should be set by the following but compiler doesn't know.
+
         USNG_Get_Grid_Values(*Zone, &ltr2_low_value, &ltr2_high_value, &pattern_offset);
 
         /* Check that the second letter of the USNG string is within
diff --git a/hdlc_rec2.c b/hdlc_rec2.c
index 8b970d3..a4764f5 100644
--- a/hdlc_rec2.c
+++ b/hdlc_rec2.c
@@ -585,7 +585,7 @@ static int try_decode (rrbb_t block, int chan, int subchan, int slice, alevel_t
 	struct hdlc_state_s H;	
 	int blen;			/* Block length in bits. */
 	int i;
-	unsigned int raw;			/* From demodulator. */
+	int raw;			/* From demodulator.  Should be 0 or 1. */
 #if DEBUGx
 	int crc_failed = 1;
 #endif
diff --git a/kiss.c b/kiss.c
index f0d7434..5a66aa0 100644
--- a/kiss.c
+++ b/kiss.c
@@ -120,9 +120,6 @@
 #if __WIN32__
 #include <stdlib.h>
 #else
-#define __USE_XOPEN2KXSI 1
-#define __USE_XOPEN 1
-//#define __USE_POSIX 1
 #include <stdlib.h>
 #include <ctype.h>
 #include <fcntl.h>
@@ -256,7 +253,7 @@ void kiss_init (struct misc_config_s *mc)
 	HANDLE kiss_nullmodem_listen_th;
 #else
 	pthread_t kiss_pterm_listen_tid;
-	pthread_t kiss_nullmodem_listen_tid;
+	//pthread_t kiss_nullmodem_listen_tid;
 	int e;
 #endif
 
@@ -669,7 +666,7 @@ void kiss_send_rec_packet (int chan, unsigned char *fbuf,  int flen)
 
 	  unsigned char stemp[AX25_MAX_PACKET_LEN + 1];
 	 
-	  assert (flen < sizeof(stemp));
+	  assert (flen < (int)(sizeof(stemp)));
 
 	  stemp[0] = (chan << 4) + 0;
 	  memcpy (stemp+1, fbuf, flen);
@@ -756,7 +753,7 @@ void kiss_send_rec_packet (int chan, unsigned char *fbuf,  int flen)
 	      //nullmodem_fd = MYFDERROR;
 	    }
 	  }
-	  else if (nwritten != kiss_len)
+	  else if ((int)nwritten != kiss_len)
 	  {
 	    text_color_set(DW_COLOR_ERROR);
 	    dw_printf ("\nError sending KISS message to client application thru null modem.  Only %d of %d written.\n\n", (int)nwritten, kiss_len);
diff --git a/kissnet.c b/kissnet.c
index 6aeaa71..ccdbd0a 100644
--- a/kissnet.c
+++ b/kissnet.c
@@ -509,7 +509,7 @@ void kissnet_send_rec_packet (int chan, unsigned char *fbuf, int flen)
 
 	  unsigned char stemp[AX25_MAX_PACKET_LEN + 1];
 	 
-	  assert (flen < sizeof(stemp));
+	  assert (flen < (int)(sizeof(stemp)));
 
 	  stemp[0] = (chan << 4) + 0;
 	  memcpy (stemp+1, fbuf, flen);
diff --git a/misc/strcasestr.c b/misc/strcasestr.c
index a418549..c684db8 100644
--- a/misc/strcasestr.c
+++ b/misc/strcasestr.c
@@ -43,8 +43,7 @@
  * Find the first occurrence of find in s, ignore case.
  */
 char *
-strcasestr(s, find)
-	const char *s, *find;
+strcasestr(const char *s, const char *find)
 {
 	char c, sc;
 	size_t len;
diff --git a/morse.c b/morse.c
index 85a0890..df0038d 100644
--- a/morse.c
+++ b/morse.c
@@ -122,7 +122,7 @@ static const struct morse_s {
 
 };
 
-#define NUM_MORSE (sizeof(morse) / sizeof(struct morse_s))
+#define NUM_MORSE ((int)(sizeof(morse) / sizeof(struct morse_s)))
 
 static void morse_tone (int chan, int tu, int wpm);
 static void morse_quiet (int chan, int tu, int wpm);
diff --git a/ptt.c b/ptt.c
index 40e4ddf..16a2386 100644
--- a/ptt.c
+++ b/ptt.c
@@ -571,6 +571,7 @@ void ptt_init (struct audio_s *audio_config_p)
 
 	      /* Try to change protection. */
 	      err = system ("sudo chmod go+w /sys/class/gpio/export /sys/class/gpio/unexport");
+	      (void)err;
 	      
 	      if (stat("/sys/class/gpio/export", &finfo) < 0) {
 	        /* Unexpected because we could do it before. */
diff --git a/rdq.c b/rdq.c
index 565fee6..6a47cb8 100644
--- a/rdq.c
+++ b/rdq.c
@@ -337,9 +337,6 @@ rrbb_t rdq_remove (void)
 {
 
 	rrbb_t result_p;
-#ifndef __WIN32__
-	int err;
-#endif
 
 
 #if DEBUG
diff --git a/regex/README-dire-wolf.txt b/regex/README-dire-wolf.txt
index cc081c4..f817084 100644
--- a/regex/README-dire-wolf.txt
+++ b/regex/README-dire-wolf.txt
@@ -4,4 +4,8 @@ For the Windows version, we need to include our own version.
 
 The source was obtained from:
 
-	http://gnuwin32.sourceforge.net/packages/regex.htm
\ No newline at end of file
+	http://gnuwin32.sourceforge.net/packages/regex.htm
+
+That is very old with loads of compile warnings.  Should we upgrade from here?
+
+	https://www.gnu.org/software/libc/sources.html
\ No newline at end of file
diff --git a/regex/regcomp.c b/regex/regcomp.c
index 4cf1688..006fe5c 100644
--- a/regex/regcomp.c
+++ b/regex/regcomp.c
@@ -3036,7 +3036,9 @@ parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa, re_token_t *token,
 
   while (1)
     {
-      bracket_elem_t start_elem, end_elem;
+      // Got warnings about being used uninitialized.
+      // bracket_elem_t start_elem, end_elem;
+      bracket_elem_t start_elem = {.type=0, .opr.name=NULL}, end_elem = {.type=0, .opr.name=NULL};
       unsigned char start_name_buf[BRACKET_NAME_BUF_SIZE];
       unsigned char end_name_buf[BRACKET_NAME_BUF_SIZE];
       reg_errcode_t ret;
diff --git a/regex/regex_internal.c b/regex/regex_internal.c
index 66154e0..0c11b88 100644
--- a/regex/regex_internal.c
+++ b/regex/regex_internal.c
@@ -675,9 +675,9 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags)
       else
 	{
 	  /* No, skip all characters until IDX.  */
+#ifdef RE_ENABLE_I18N
 	  int prev_valid_len = pstr->valid_len;
 
-#ifdef RE_ENABLE_I18N
 	  if (BE (pstr->offsets_needed, 0))
 	    {
 	      pstr->len = pstr->raw_len - idx + offset;
@@ -1396,7 +1396,9 @@ static int
 internal_function
 re_dfa_add_node (re_dfa_t *dfa, re_token_t token)
 {
+#ifdef RE_ENABLE_I18N
   int type = token.type;
+#endif
   if (BE (dfa->nodes_len >= dfa->nodes_alloc, 0))
     {
       size_t new_nodes_alloc = dfa->nodes_alloc * 2;
diff --git a/regex/regexec.c b/regex/regexec.c
index 135efe7..a5debc9 100644
--- a/regex/regexec.c
+++ b/regex/regexec.c
@@ -1,3 +1,9 @@
+
+/* this is very old and has massive numbers of compiler warnings. */
+/* Maybe try upgrading to a newer version such as */
+/* https://fossies.org/dox/glibc-2.24/regexec_8c_source.html */
+
+
 /* Extended regular expression matching and search library.
    Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
@@ -18,6 +24,14 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+/* Added 12/2016 to remove warning: */
+/* incompatible implicit declaration of built-in function 'alloca' */
+#if __WIN32__
+#include <malloc.h>
+#else
+#include <alloca.h>
+#endif
+
 static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
 				     int n) internal_function;
 static void match_ctx_clean (re_match_context_t *mctx) internal_function;
@@ -228,6 +242,7 @@ regexec (preg, string, nmatch, pmatch, eflags)
   reg_errcode_t err;
   int start, length;
   re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
+  (void)dfa;
 
   if (eflags & ~(REG_NOTBOL | REG_NOTEOL | REG_STARTEND))
     return REG_BADPAT;
@@ -419,6 +434,7 @@ re_search_stub (bufp, string, length, start, range, stop, regs, ret_len)
   int nregs, rval;
   int eflags = 0;
   re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
+  (void)dfa;
 
   /* Check for out-of-range.  */
   if (BE (start < 0 || start > length, 0))
@@ -2894,7 +2910,10 @@ check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
 	      sizeof (re_dfastate_t *) * (path->alloc - old_alloc));
     }
 
-  str_idx = path->next_idx ?: top_str;
+  // Original:
+  // str_idx = path->next_idx ?: top_str;
+  // Copied following from another version when cleaning up compiler warnings.
+  str_idx = path->next_idx ? path->next_idx : top_str;
 
   /* Temporary modify MCTX.  */
   backup_state_log = mctx->state_log;
@@ -3032,7 +3051,9 @@ check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
   const re_dfa_t *const dfa = mctx->dfa;
   int result;
   int cur_idx;
+#ifdef RE_ENABLE_I18N
   reg_errcode_t err = REG_NOERROR;
+#endif
   re_node_set union_set;
   re_node_set_init_empty (&union_set);
   for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
diff --git a/serial_port.c b/serial_port.c
index b3c56ef..3ccf43c 100644
--- a/serial_port.c
+++ b/serial_port.c
@@ -44,8 +44,6 @@
 
 #else
 
-#define __USE_XOPEN2KXSI 1
-#define __USE_XOPEN 1
 #include <stdlib.h>
 #include <ctype.h>
 #include <fcntl.h>
@@ -305,7 +303,7 @@ int serial_port_write (MYFDTYPE fd, char *str, int len)
 	    dw_printf ("Error writing to serial port.  Error %d.\n\n", err);
 	  }
 	}
-	else if (nwritten != len) 
+	else if ((int)nwritten != len) 
 	{
 	  text_color_set(DW_COLOR_ERROR);
 	  dw_printf ("Error writing to serial port.  Only %d of %d written.\n\n", (int)nwritten, len);
diff --git a/server.c b/server.c
index 23dff77..8197b75 100644
--- a/server.c
+++ b/server.c
@@ -1212,6 +1212,7 @@ static void send_to_client (int client, void *reply_p)
 	send (client_sock[client], (char*)(ph), len, 0);
 #else
 	err = write (client_sock[client], ph, len);
+	(void)err;
 #endif
 }
 
@@ -1274,7 +1275,7 @@ static THREAD_F cmd_listen_thread (void *arg)
 
 	  int data_len = netle2host(cmd.hdr.data_len_NETLE);
 
-	  if (data_len < 0 || data_len > sizeof(cmd.data) - 1) {
+	  if (data_len < 0 || data_len > (int)(sizeof(cmd.data) - 1)) {
 
 	    text_color_set(DW_COLOR_ERROR);
 	    dw_printf ("\nInvalid message from AGW client application %d.\n", client);
diff --git a/symbols.c b/symbols.c
index a0592f1..ad3263c 100644
--- a/symbols.c
+++ b/symbols.c
@@ -526,7 +526,7 @@ void symbols_list (void)
  *
  *------------------------------------------------------------------*/
 
-const static char ssid_to_sym[16] = {
+static const char ssid_to_sym[16] = {
 	  ' ',	/* 0 - No icon. */
 	  'a',	/* 1 - Ambulance */
 	  'U',	/* 2 - Bus */
diff --git a/telemetry.c b/telemetry.c
index df28543..0d389d0 100644
--- a/telemetry.c
+++ b/telemetry.c
@@ -74,8 +74,8 @@
 #define T_STR_LEN 16				/* Max len for labels and units. */
 
 
-#define MAGIC1  0xa51111a5			/* For checking storage allocation problems. */
-#define MAGIC2  0xa52222a5
+#define MAGIC1  0x5a1111a5			/* For checking storage allocation problems. */
+#define MAGIC2  0x5a2222a5
 
 #define C_A 0					/* Scaling coefficient positions. */
 #define C_B 1
@@ -354,7 +354,7 @@ void telemetry_data_original (char *station, char *info, int quiet, char *output
 	      strlcpy (comment, next+8, commentsize);
 	      next[8] = '\0';
 	    }
-	    for (k = 0; k < strlen(next); k++) {
+	    for (k = 0; k < (int)(strlen(next)); k++) {
 	      if (next[k] == '0') {
 	        draw[k] = 0;
 	      }
@@ -819,7 +819,7 @@ void telemetry_bit_sense_message (char *station, char *msg, int quiet)
 	  }
 	}
 
-	for (n = 0; n < T_NUM_DIGITAL && n < strlen(msg); n++) {
+	for (n = 0; n < T_NUM_DIGITAL && n < (int)(strlen(msg)); n++) {
 
 	  if (msg[n] == '1') {
 	    pm->sense[n] = 1;
diff --git a/textcolor.c b/textcolor.c
index e0d2f31..e518b93 100644
--- a/textcolor.c
+++ b/textcolor.c
@@ -128,10 +128,10 @@ static const char background_white[] = "\e[5;47m";
 static const char black[]	= "\e[0;30m" "\e[5;47m";
 static const char red[] 	= "\e[1;31m" "\e[5;47m";
 static const char green[] 	= "\e[1;32m" "\e[5;47m";
-static const char yellow[] 	= "\e[1;33m" "\e[5;47m";
+//static const char yellow[] 	= "\e[1;33m" "\e[5;47m";
 static const char blue[] 	= "\e[1;34m" "\e[5;47m";
 static const char magenta[] 	= "\e[1;35m" "\e[5;47m";
-static const char cyan[] 	= "\e[1;36m" "\e[5;47m";
+//static const char cyan[] 	= "\e[1;36m" "\e[5;47m";
 static const char dark_green[]	= "\e[0;32m" "\e[5;47m";
 
 /* Clear from cursor to end of screen. */
@@ -153,10 +153,10 @@ static const char background_white[] = "\e[48;2;255;255;255m";
 static const char black[]	= "\e[0;30m" "\e[48;2;255;255;255m";
 static const char red[] 	= "\e[0;31m" "\e[48;2;255;255;255m";
 static const char green[] 	= "\e[0;32m" "\e[48;2;255;255;255m";
-static const char yellow[] 	= "\e[0;33m" "\e[48;2;255;255;255m";
+//static const char yellow[] 	= "\e[0;33m" "\e[48;2;255;255;255m";
 static const char blue[] 	= "\e[0;34m" "\e[48;2;255;255;255m";
 static const char magenta[] 	= "\e[0;35m" "\e[48;2;255;255;255m";
-static const char cyan[] 	= "\e[0;36m" "\e[48;2;255;255;255m";
+//static const char cyan[] 	= "\e[0;36m" "\e[48;2;255;255;255m";
 static const char dark_green[]	= "\e[0;32m" "\e[48;2;255;255;255m";
 
 
@@ -171,10 +171,10 @@ static const char background_white[] = "\e[47;1m";
 static const char black[]	= "\e[0;30m" "\e[1;47m";
 static const char red[] 	= "\e[1;31m" "\e[1;47m";
 static const char green[] 	= "\e[1;32m" "\e[1;47m"; 
-static const char yellow[] 	= "\e[1;33m" "\e[1;47m";
+//static const char yellow[] 	= "\e[1;33m" "\e[1;47m";
 static const char blue[] 	= "\e[1;34m" "\e[1;47m";
 static const char magenta[] 	= "\e[1;35m" "\e[1;47m";
-static const char cyan[] 	= "\e[1;36m" "\e[1;47m";
+//static const char cyan[] 	= "\e[1;36m" "\e[1;47m";
 static const char dark_green[]	= "\e[0;32m" "\e[1;47m";
 
 
diff --git a/ttcalc.c b/ttcalc.c
index e5303f5..ccebf89 100644
--- a/ttcalc.c
+++ b/ttcalc.c
@@ -146,6 +146,7 @@ int main (int argc, char *argv[])
 	send (server_sock, (char*)(&mon_cmd), sizeof(mon_cmd), 0);
 #else
 	err = write (server_sock, (char*)(&mon_cmd), sizeof(mon_cmd));
+	(void)err;
 #endif
 
 
@@ -167,7 +168,7 @@ int main (int argc, char *argv[])
 	    exit (1);
 	  }
 
-	  assert (mon_cmd.data_len >= 0 && mon_cmd.data_len < sizeof(data));
+	  assert (mon_cmd.data_len >= 0 && mon_cmd.data_len < (int)(sizeof(data)));
 
 	  if (mon_cmd.data_len > 0) {
 #if __WIN32__
@@ -356,7 +357,7 @@ static int connect_to_server (char *hostname, char *port)
 
 #if __WIN32__
 #else
-	int e;
+	//int e;
 #endif
 
 #define MAX_HOSTS 30
@@ -426,8 +427,11 @@ static int connect_to_server (char *hostname, char *port)
 	// Try each address until we find one that is successful.
 
 	for (n=0; n<num_hosts; n++) {
+#if __WIN32__
+	  SOCKET is;
+#else
 	  int is;
-
+#endif
 	  ai = hosts[n];
 
 	  ia_to_text (ai->ai_family, ai->ai_addr, ipaddr_str, sizeof(ipaddr_str));
diff --git a/waypoint.c b/waypoint.c
index 6b2e9fb..1ec7712 100644
--- a/waypoint.c
+++ b/waypoint.c
@@ -39,9 +39,6 @@
 #if __WIN32__
 #include <stdlib.h>
 #else
-#define __USE_XOPEN2KXSI 1
-#define __USE_XOPEN 1
-//#define __USE_POSIX 1
 #include <stdlib.h>
 #include <ctype.h>
 #include <sys/errno.h>
@@ -614,7 +611,7 @@ static void send_sentence (char *sent)
 
 
 
-void waypoint_term ()
+void waypoint_term (void)
 {
 
 	if (s_waypoint_port_fd != MYFDERROR) {
diff --git a/xid.c b/xid.c
index f018422..90ce437 100644
--- a/xid.c
+++ b/xid.c
@@ -123,12 +123,12 @@ int xid_parse (unsigned char *info, int info_len, struct xid_param_s *result, ch
 // The  AX.25 v2.2 protocol spec says, for most of these,
 //	"If this field is not present, the current values are retained."
 
-// We set the values to our usual G_UNKNOWN to mean undefined and let the caller deal with it.
-
+// We set the numeric values to our usual G_UNKNOWN to mean undefined and let the caller deal with it.
+// rej and modulo are enum so we can't use G_UNKNOWN there.
 
 	result->full_duplex = G_UNKNOWN;
-	result->rej = G_UNKNOWN;
-	result->modulo = G_UNKNOWN;
+	result->rej = unknown_reject;
+	result->modulo = modulo_unknown;
 	result->i_field_length_rx = G_UNKNOWN;
 	result->window_size_rx = G_UNKNOWN;
 	result->ack_timer = G_UNKNOWN;
@@ -438,7 +438,7 @@ int xid_encode (struct xid_param_s *param, unsigned char *info)
 		PV_HDLC_Optional_Functions_16_bit_FCS | 
 		PV_HDLC_Optional_Functions_Synchronous_Tx;
 
-	if (param->rej == implicit_reject || param->rej == selective_reject_reject || param->rej == G_UNKNOWN)
+	if (param->rej == implicit_reject || param->rej == selective_reject_reject || param->rej == unknown_reject)
 	  x |= PV_HDLC_Optional_Functions_REJ_cmd_resp;
 
 	if (param->rej == selective_reject || param->rej == selective_reject_reject)	
@@ -446,7 +446,7 @@ int xid_encode (struct xid_param_s *param, unsigned char *info)
 
 	if (param->modulo == modulo_128)
 	  x |= PV_HDLC_Optional_Functions_Modulo_128;
-	else	// includes G_UNKNOWN
+	else	// includes modulo_8 and modulo_unknown
 	  x |= PV_HDLC_Optional_Functions_Modulo_8;
 
 	*p++ = (x >> 16) & 0xff;
@@ -689,8 +689,8 @@ int main (int argc, char *argv[]) {
 	text_color_set (DW_COLOR_ERROR);
 
 	assert (param2.full_duplex == G_UNKNOWN);
-	assert (param2.rej == G_UNKNOWN);
-	assert (param2.modulo == G_UNKNOWN);
+	assert (param2.rej == unknown_reject);
+	assert (param2.modulo == modulo_unknown);
 	assert (param2.i_field_length_rx == G_UNKNOWN);
 	assert (param2.window_size_rx == G_UNKNOWN);
 	assert (param2.ack_timer == G_UNKNOWN);
diff --git a/xid.h b/xid.h
index 80f34a8..c94003e 100644
--- a/xid.h
+++ b/xid.h
@@ -12,7 +12,7 @@ struct xid_param_s {
 	// Order is important because negotiation keeps the lower value.
 	// We will support only 1 & 2.
 
-	enum rej_e {implicit_reject=1, selective_reject=2, selective_reject_reject=3 } rej;
+	enum rej_e {unknown_reject=0, implicit_reject=1, selective_reject=2, selective_reject_reject=3 } rej;
 
 	enum ax25_modulo_e modulo;