diff --git a/README b/README
index d44a3d1..3cc732a 100644
--- a/README
+++ b/README
@@ -18,6 +18,11 @@ improvements.
 ===> IMPORTANT: SEE THE FILE "README.security" FOR IMPORTANT SECURITY
 ===> CHANGES ENACTED IN VERSION 0.17!!!!!!!!!
 
+Changes in 0.20:
+	Portability improvements.  Now known to compile and run on
+	Solaris 8.
+
+
 Changes in 0.19:
 	Fork before performing tcpwrappers check.
 
diff --git a/config.h.in b/config.h.in
index 57676a8..1b328fe 100644
--- a/config.h.in
+++ b/config.h.in
@@ -23,4 +23,7 @@
 #undef HAVE_SETREUID
 #undef HAVE_SETREGID
 #undef HAVE_SYSEXITS_H
+#undef HAVE_STRINGS_H
+#undef HAVE_LIBGEN_H
+#undef HAVE_SYS_FILIO_H
 #undef WITH_REGEX
diff --git a/configure.in b/configure.in
index 6a4ccad..1df071e 100644
--- a/configure.in
+++ b/configure.in
@@ -9,6 +9,16 @@ AC_PROG_CC
 AC_C_CONST
 AC_C_INLINE
 
+AC_CHECK_HEADERS(sysexits.h)
+AC_CHECK_HEADERS(strings.h)
+AC_CHECK_HEADERS(libgen.h)
+AC_CHECK_HEADERS(sys/filio.h)
+
+AC_SEARCH_LIBS(socket, socket, , [AC_MSG_ERROR(socket library not found)])
+AC_SEARCH_LIBS(gethostbyname, [nsl resolv], , [AC_MSG_ERROR(gethostbyname not found)])
+AC_SEARCH_LIBS(inet_aton, [nsl resolv], , [AC_MSG_ERROR(inet_aton not found)])
+AC_SEARCH_LIBS(herror, [nsl resolv], , [AC_MSG_ERROR(herror not found)])
+
 AC_CHECK_FUNCS(recvmsg)
 AC_CHECK_FUNCS(setreuid)
 AC_CHECK_FUNCS(setregid)
@@ -50,14 +60,10 @@ PA_ADD_CFLAGS(-pipe)
 
 PA_SIGSETJMP([AC_DEFINE(HAVE_SIGSETJMP)])
 
-AC_CHECK_HEADERS(sysexits.h)
-
 LIBXTRA=false
-
 AC_SEARCH_LIBS(xmalloc, iberty, , LIBXTRA=true LIBOBJS="$LIBOBJS xmalloc.o")
 AC_SEARCH_LIBS(xstrdup, iberty, , LIBXTRA=true LIBOBJS="$LIBOBJS xstrdup.o")
 AC_SEARCH_LIBS(bsd_signal, bsd, , LIBXTRA=true LIBOBJS="$LIBOBJS bsdsignal.o")
-
 if $LIBXTRA; then
 	LIBS="../lib/libxtra.a $LIBS"
 fi
diff --git a/lib/bsdsignal.c b/lib/bsdsignal.c
index 7740740..27e3a34 100644
--- a/lib/bsdsignal.c
+++ b/lib/bsdsignal.c
@@ -8,14 +8,23 @@
 #include <stdlib.h>
 #include <string.h>
 
-void bsd_signal(int signum, void (*handler)(int))
+void (*bsd_signal(int signum, void (*handler)(int)))(int);
 {
-  struct sigaction action;
+  struct sigaction action, oldaction;
 
   memset(&action, 0, sizeof action);
   action.sa_handler = handler;
   sigemptyset(&action.sa_mask);
+  sigaddset(&act.sa_mask, signum);
   action.sa_flags = SA_RESTART;
   
-  sigaction(hander, action, NULL);
+  if (sigaction(hander, action, &oldaction) == -1) {
+#ifdef SIG_ERR
+    return SIG_ERR;
+#else
+    return NULL;
+#endif
+  }
+
+  return oldaction.sa_handler;
 }
diff --git a/tftp/main.c b/tftp/main.c
index 844b4b4..6a5dac4 100644
--- a/tftp/main.c
+++ b/tftp/main.c
@@ -68,8 +68,13 @@ static const char *rcsid UNUSED =
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <fcntl.h>
 
 #include "extern.h"
+#include "../config.h"
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
 
 #define	TIMEOUT		5		/* secs between rexmt's */
 #define	LBUFLEN		200		/* size of input buffer */
diff --git a/tftp/tftp.c b/tftp/tftp.c
index f1e6961..03b048e 100644
--- a/tftp/tftp.c
+++ b/tftp/tftp.c
@@ -68,7 +68,9 @@ static const char *rcsid UNUSED =
 #include "../config.h"
 #include "extern.h"
 
-void bsd_signal(int, void (*)(int));
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
 
 #ifndef HAVE_SIGSETJMP
 #define sigsetjmp(x,y)  setjmp(x)
@@ -322,7 +324,7 @@ makerequest(int request, const char *name,
 	char *cp;
 
 	tp->th_opcode = htons((u_short)request);
-	cp = tp->th_stuff;
+	cp = (char *) &(tp->th_stuff);
 	strcpy(cp, name);
 	cp += strlen(name);
 	*cp++ = '\0';
@@ -397,7 +399,7 @@ tpacket(const char *s, struct tftphdr *tp, int n)
 	case RRQ:
 	case WRQ:
 		n -= 2;
-		file = cp = tp->th_stuff;
+		file = cp = (char *) &(tp->th_stuff);
 		cp = strchr(cp, '\0');
 		printf("<file=%s, mode=%s>\n", file, cp + 1);
 		break;
diff --git a/tftp/tftpsubs.c b/tftp/tftpsubs.c
index 8f66f4b..8a6e654 100644
--- a/tftp/tftpsubs.c
+++ b/tftp/tftpsubs.c
@@ -59,12 +59,14 @@ static const char *rcsid UNUSED =
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
+#include <sys/time.h>
 #include <netinet/in.h>
 #include <arpa/tftp.h>
-
 #include <stdio.h>
 #include <unistd.h>
 
+#include "../config.h"
+
 #define PKTSIZE MAX_SEGSIZE+4       /* should be moved to tftp.h */
 
 int segsize = SEGSIZE;		/* Default segsize */
@@ -254,20 +256,28 @@ skipit:
 int
 synchnet(int f)		/* socket to flush */
 {
-	int i, j = 0;
-	char rbuf[PKTSIZE];
-	struct sockaddr_in from;
-	int fromlen;
+  int pktcount = 0;
+  char rbuf[PKTSIZE];
+  struct sockaddr_in from;
+  int fromlen;
+  fd_set socketset;
+  struct timeval notime;
+  
+  while ( 1 ) {
+    notime.tv_sec = notime.tv_usec = 0;
+    
+    FD_ZERO(&socketset);
+    FD_SET(f, &socketset);
+    
+    if ( select(f, &socketset, NULL, NULL, &notime) <= 0 )
+      break;			/* Nothing to read */
+	
+    /* Otherwise drain the packet */
+    pktcount++;
+    fromlen = sizeof from;
+    (void) recvfrom(f, rbuf, sizeof (rbuf), 0,
+		    (struct sockaddr *)&from, &fromlen);
+  }
 
-	while (1) {
-		(void) ioctl(f, FIONREAD, &i);
-		if (i) {
-			j++;
-			fromlen = sizeof from;
-			(void) recvfrom(f, rbuf, sizeof (rbuf), 0,
-				(struct sockaddr *)&from, &fromlen);
-		} else {
-			return(j);
-		}
-	}
+  return pktcount;		/* Return packets drained */
 }
diff --git a/tftp/tftpsubs.h b/tftp/tftpsubs.h
index 0937dad..0dff16e 100644
--- a/tftp/tftpsubs.h
+++ b/tftp/tftpsubs.h
@@ -75,7 +75,7 @@ extern char *xstrdup(const char *);
 /*
  * Signal-related stuff
  */
-void bsd_signal(int, void (*)(int));
+void (*bsd_signal(int, void (*)(int)))(int);
 
 #ifndef HAVE_SIGSETJMP
 #define sigsetjmp(x,y)  setjmp(x)
diff --git a/tftpd/recvfrom.c b/tftpd/recvfrom.c
index c8af007..38eac94 100644
--- a/tftpd/recvfrom.c
+++ b/tftpd/recvfrom.c
@@ -28,6 +28,9 @@
 
 #include "../config.h"
 #include "recvfrom.h"
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
 
 #if defined(HAVE_RECVMSG) && defined(HAVE_MSGHDR_MSG_CONTROL)
 
diff --git a/tftpd/tftpd.c b/tftpd/tftpd.c
index e97d0af..fda6ce1 100644
--- a/tftpd/tftpd.c
+++ b/tftpd/tftpd.c
@@ -89,6 +89,12 @@ int allow_severity	= -1;	/* Don't log at all */
 
 struct request_info wrap_request;
 #endif
+#ifdef HAVE_LIBGEN_H
+#include <libgen.h>		/* Necessary for basename() on Solaris */
+#endif
+#ifdef HAVE_SYS_FILIO_H
+#include <sys/filio.h>		/* Necessary for FIONBIO on Solaris */
+#endif
 
 #define	TIMEOUT 5		/* Default timeout (seconds) */
 #define TRIES   4		/* Number of attempts to send each packet */
@@ -101,7 +107,7 @@ struct request_info wrap_request;
 #define EOPTNEG	8
 #endif
 
-extern	char *__progname;
+char   *__progname;
 int	peer;
 int	timeout    = TIMEOUT;
 int	rexmtval   = TIMEOUT;
@@ -444,7 +450,7 @@ tftp(struct tftphdr *tp, int size)
   
   ((struct tftphdr *)ackbuf)->th_opcode = ntohs(OACK);
   
-  origfilename = cp = tp->th_stuff;
+  origfilename = cp = (char *) &(tp->th_stuff);
   argn = 0;
   
   while ( cp < buf + size && *cp ) {