diff --git a/Bpq32.c b/Bpq32.c
index b282d88..9ca6ea5 100644
--- a/Bpq32.c
+++ b/Bpq32.c
@@ -1275,6 +1275,8 @@ along with LinBPQ/BPQ32.  If not, see http://www.gnu.org/licenses
 //	Fix 64 bit compatiblility issues with AGWAPI (73)
 //	Fix KAM Pactor Interlock (73)
 //	Fix Node map reporting, broken in .73 (74)
+//	Fixes to build on FreeBSD and NetBSD from jg1uaa (77)
+//	Fix to L4Compress from Stece G7TAJ (77)
 
 
 #define CKernel
diff --git a/IPCode.c b/IPCode.c
index 54756e3..4d9abca 100644
--- a/IPCode.c
+++ b/IPCode.c
@@ -100,7 +100,10 @@ TODo	?Multiple Adapters
 #ifdef WIN32
 int pcap_sendpacket(pcap_t *p, u_char *buf, int size);
 #else
- PCAP_API int pcap_sendpacket(pcap_t *, const u_char *, int);
+#ifndef PCAP_API
+#define PCAP_API extern
+#endif
+PCAP_API int pcap_sendpacket(pcap_t *, const u_char *, int);
 #endif
 
 #ifndef LINBPQ
diff --git a/L4Code.c b/L4Code.c
index 56a0a23..703168a 100644
--- a/L4Code.c
+++ b/L4Code.c
@@ -797,8 +797,6 @@ VOID L4BG()
 
 					// Fragment if more than L4CompPaclen
 
-					// Entered with  original first fragment in saveMsg;
-
 					// Check for too big a compressed frame size. Bigger compresses better but adds latency to link
 
 					maxCompSendLen = L4CompPaclen * L4CompMaxframe;
@@ -827,7 +825,7 @@ VOID L4BG()
 							if (Len > ChunkSize)
 								Len = ChunkSize;
 
-							complen = L2Compressit(Compressed, 8192, toCompress, toCompressLen);
+							complen = L2Compressit(Compressed, 8192, toCompress, Len);
 
 							Debugprintf("Chunked %d %d %d%%", Len, complen, ((Len - complen) * 100) / Len);
 
diff --git a/LinBPQ.c b/LinBPQ.c
index 6ba4b1c..689b5f4 100644
--- a/LinBPQ.c
+++ b/LinBPQ.c
@@ -913,7 +913,10 @@ int main(int argc, char * argv[])
 
 	Debugprintf("G8BPQ AX25 Packet Switch System Version %s %s", TextVerstring, Datestring);
 
-#ifndef MACBPQ
+#if defined(MACBPQ) || defined(FREEBSD)
+	time_t dummy;
+	_MYTIMEZONE = -localtime(&dummy)->tm_gmtoff;
+#else
 	_MYTIMEZONE = _timezone;
 #endif
 
diff --git a/TNCEmulators.c b/TNCEmulators.c
index 135d318..7fce453 100644
--- a/TNCEmulators.c
+++ b/TNCEmulators.c
@@ -241,8 +241,14 @@ typedef struct _SERIAL_STATUS {
 
 #ifndef WIN32
 
-#ifdef MACBPQ
+#if defined(MACBPQ)
 #include <util.h>
+#elif defined(FREEBSD)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+#include <libutil.h>
+#else
+#include <util.h>
+#endif
 #endif
 
 extern int posix_openpt (int __oflag);
@@ -262,7 +268,7 @@ HANDLE LinuxOpenPTY(char * Name)
 	u_long param=1;
 	struct termios term;
 
-#ifdef MACBPQ
+#if defined(MACBPQ) || defined(FREEBSD)
 
 	// Create a pty pair
 	
diff --git a/Versions.h b/Versions.h
index 181a6ab..061e9eb 100644
--- a/Versions.h
+++ b/Versions.h
@@ -10,15 +10,15 @@
 
 #endif
 
-#define KVers 6,0,24,75
-#define KVerstring "6.0.24.75\0"
+#define KVers 6,0,24,77
+#define KVerstring "6.0.24.77\0"
 
 
 #ifdef CKernel
 
 #define Vers KVers
 #define Verstring KVerstring
-#define Datestring "June 2025"
+#define Datestring "July 2025"
 #define VerComments "G8BPQ Packet Switch (C Version)" KVerstring
 #define VerCopyright "Copyright © 2001-2025 John Wiseman G8BPQ\0"
 #define VerDesc "BPQ32 Switch\0"
diff --git a/asmstrucs.h b/asmstrucs.h
index aa73b93..79e9a26 100644
--- a/asmstrucs.h
+++ b/asmstrucs.h
@@ -1087,7 +1087,11 @@ struct SEM
 	int	Gets;
 	int Rels;
 	DWORD SemProcessID;
+#ifdef WIN32
 	DWORD SemThreadID;
+#else
+	pthread_t SemThreadID;
+#endif
 	int Line;		// caller file and line
 	char File[MAX_PATH];
 };
diff --git a/linether.c b/linether.c
index fb3410c..b354465 100644
--- a/linether.c
+++ b/linether.c
@@ -22,17 +22,29 @@ along with LinBPQ/BPQ32.  If not, see http://www.gnu.org/licenses
 
 // Normally uses a Raw socket, but that can't send to other apps on same machine.
 // so can use a TAP device instead (or maybe as well??)
+
+// Not suported on BSD based systems
+
+#ifndef FREEBSD
 #ifndef MACBPQ
 
+
+#if !(defined(MACBPQ) || defined(FREEBSD))
+
 #include <stdio.h>
-
 #include "cheaders.h"
-
 #include <sys/socket.h>
+
+#if !(defined(FREEBSD))
+
 #include <linux/if_packet.h>
 #include <linux/if_ether.h>
 #include <linux/if_arp.h>
 
+#endif
+#endif
+
+
 extern int tap_fd;
 
 typedef struct PCAPStruct
@@ -489,5 +501,11 @@ static int ProcessLine(char * buf, int Port, BOOL CheckPort)
 	return (FALSE);
 	
 }
+
+
+// 
+
+#endif // MACBPQ
+#endif // FREEBSD
 	
-#endif
+
diff --git a/lzhuf32.c b/lzhuf32.c
index f1ef0a4..c1aea82 100644
--- a/lzhuf32.c
+++ b/lzhuf32.c
@@ -1406,7 +1406,7 @@ File: 5566 NEWBOAT.HOMEPORT.JPG
 
 			if (SendBBStoSYSOPCall)
 				if (_stricmp(FullTo, BBSName) == 0)
-					strcpy(Msg->to, SYSOPCall);
+					strcpy(FullTo, SYSOPCall);
 
 			if ((Msg->via[0] == 0 || strcmp(Msg->via, "BPQ") == 0 || strcmp(Msg->via, "BBS") == 0)
 				&& (conn->Paclink || conn->RMSExpress))
diff --git a/makefile b/makefile
index 6d7c6e4..cdb6298 100644
--- a/makefile
+++ b/makefile
@@ -17,10 +17,32 @@ OBJS = pngwtran.o pngrtran.o pngset.o pngrio.o pngwio.o pngtrans.o pngrutil.o pn
 
 # Configuration:
 
-CC = gcc
-		                       
-all: CFLAGS = -DLINBPQ -MMD -g -rdynamic -fcommon -fasynchronous-unwind-tables
-all: LDFLAGS = -l:libpaho-mqtt3a.a -l:libjansson.a
+#Default to Linux
+	CC = gcc    
+	EXTRA_LDFLAGS = -Xlinker -Map=output.map -lrt -l:libpaho-mqtt3a.a -l:libjansson.a
+
+#other OS
+
+OS_NAME = $(shell uname -s)
+ifeq ($(OS_NAME),NetBSD)
+	CC = cc
+    EXTRA_CFLAGS = -DFREEBSD -DNOMQTT -I/usr/pkg/include 
+    EXTRA_LDFLAGS =  -Xlinker -Map=output.map -Wl,-R/usr/pkg/lib -L/usr/pkg/lib -lrt -lutil -lexecinfo
+endif
+ifeq ($(OS_NAME),FreeBSD)
+    CC = cc
+    EXTRA_CFLAGS = -DFREEBSD -DNOMQTT -I/usr/local/include
+    EXTRA_LDFLAGS = -Xlinker -Map=output.map -L/usr/local/lib -lrt -liconv -lutil -lexecinfo
+endif
+ifeq ($(OS_NAME),Darwin)
+	CC = gcc	                       
+	EXTRA_CFLAGS = -DMACBPQ -DNOMQTT 
+	EXTRA_LDFLAGS = -liconv
+endif
+
+$(info OS_NAME is $(OS_NAME))
+
+all: CFLAGS = -DLINBPQ  -MMD -g -fcommon -fasynchronous-unwind-tables $(EXTRA_CFLAGS)		                       
 all: linbpq
 
 
@@ -32,7 +54,7 @@ noi2c: linbpq
 
 
 linbpq: $(OBJS)
-	gcc $(OBJS) -Xlinker -Map=output.map -l:libminiupnpc.a -lrt -lm -lz $(LDFLAGS) -lpthread -lconfig -lpcap -o linbpq
+	cc $(OBJS) $(EXTRA_LDFLAGS) -lminiupnpc -lm -lz $(LDFLAGS) -lpthread -lconfig -lpcap -o linbpq
 	sudo setcap "CAP_NET_ADMIN=ep CAP_NET_RAW=ep CAP_NET_BIND_SERVICE=ep" linbpq		
 
 -include *.d
diff --git a/upnp.c b/upnp.c
index 8190a62..714e04d 100644
--- a/upnp.c
+++ b/upnp.c
@@ -134,7 +134,7 @@ int upnpInit()
 				return 0;
 			}
 
-#if MINIUPNPC_API_VERSION == 18
+#if MINIUPNPC_API_VERSION >= 18
 			i = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr), wanaddr, sizeof(wanaddr));
 #else
 			i = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));
@@ -168,7 +168,7 @@ int upnpClose()
 				return 0;
 			}
 
-#if MINIUPNPC_API_VERSION == 18
+#if MINIUPNPC_API_VERSION >= 18
 			i = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr), wanaddr, sizeof(wanaddr));
 #else
 			i = UPNP_GetValidIGD(devlist, &urls, &data, lanaddr, sizeof(lanaddr));