--- a/Makefile
+++ b/Makefile
@@ -128,7 +128,7 @@ OBJS += $(OBJS_WIN)
 LDLIBS += -lwsock32 -lwinmm -lsetupapi -lws2_32
 else
 OBJS += $(OBJS_LIN)
-LDLIBS += -lrt -lasound
+LDLIBS += -lrt -lasound -lhidapi-hidraw
 endif
 
 all: ardopcf
--- a/lib/rawhid/rawhid.c
+++ b/lib/rawhid/rawhid.c
@@ -358,7 +358,7 @@ int HID_Read_Block()
 #ifdef WIN32
 	Len = rawhid_recv(0, Msg, 64, 100);
 #else
-	Len = read(CM108Handle, Msg, 64);
+	Len = hid_read(CM108Handle, Msg, 64);
 #endif
 
 	if (Len <= 0)
@@ -411,12 +411,12 @@ int HID_Write_Block()
 			return 0;
 		}
 #else
-		ret = write(CM108Handle, Msg, 64);
+		ret = hid_write(CM108Handle, Msg, 64);
 
 		if (ret != 64)
 		{
 			printf ("Write to %s failed, n=%d, errno=%d\n", HIDDevice, ret, errno);
-			close (CM108Handle);
+			hid_close (CM108Handle);
 			CM108Handle = 0;
 			return 0;
 		}
--- a/lib/ws_server/ws_server.c
+++ b/lib/ws_server/ws_server.c
@@ -908,7 +908,7 @@ int sendHttpErr(const char *errstr, const char *uri, int s_cnum) {
 //  sent that will be retried.
 // Return -1 for a bad or unexpected request.
 // Return -2 for an unexpected failure while processing a request.
-int process_http_req(){
+int process_http_req(int cnum){
 	const int BUFLEN = 1024;
 	char http_buf[BUFLEN];
 	char uri[WS_URILEN];
--- a/src/common/ARDOPC.c
+++ b/src/common/ARDOPC.c
@@ -56,7 +56,7 @@ BOOL SerialHostInit();
 void SerialHostPoll();
 void TCPHostPoll();
 BOOL MainPoll();
-void PlatformSleep();
+void PlatformSleep(int mS);
 const char* PlatformSignalAbbreviation(int signal);
 BOOL BusyDetect2(float * dblMag, int intStart, int intStop);
 BOOL IsPingToMe(const StationId* caller, const StationId* target);
--- a/src/common/ARQ.c
+++ b/src/common/ARQ.c
@@ -1772,7 +1772,7 @@ void ProcessRcvdARQFrame(UCHAR intFrameType, UCHAR * bytData, int DataLen, BOOL
 
 				SetARDOPProtocolState(ISS);
 				ARQState = ISSData;
-				SendData(FALSE);
+				SendData();
 				return;
 			}
 			// In an active ARQ Connection, only send an IDFrame when ProtocolState
--- a/src/common/log.h
+++ b/src/common/log.h
@@ -28,8 +28,6 @@
 #include <stdio.h>
 #include <stddef.h>
 
-// for gmtime_r()
-#define _POSIX_C_SOURCE 200809L
 #include <time.h>
 
 /* Size of the log line buffer. The buffer is allocated on stack. It limits
--- a/src/common/log_file.h
+++ b/src/common/log_file.h
@@ -6,9 +6,6 @@
 #ifndef ARDOP_COMMON_LOG_FILE_H_
 #define ARDOP_COMMON_LOG_FILE_H_
 
- // for gmtime_r()
-#define _POSIX_C_SOURCE 200809L
-
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
--- a/src/linux/ALSASound.c
+++ b/src/linux/ALSASound.c
@@ -1606,7 +1606,7 @@ short loopbuff[1200];  // Temp for testing - loop sent samples to decoder
 
 
 
-int InitSound(BOOL Quiet)
+int InitSound()
 {
 	if (strcmp(PlaybackDevice, "NOSOUND") == 0)
 		return (1);