diff --git a/lib/inodedb.c b/lib/inodedb.c
index 83fd6405..d3faab5a 100644
--- a/lib/inodedb.c
+++ b/lib/inodedb.c
@@ -33,7 +33,7 @@
 
 glibtop_inodedb *
 glibtop_inodedb_open_s (glibtop *server, unsigned databases,
-			unsigned long cachesize)
+			unsigned long G_GNUC_UNUSED cachesize)
 {
 	glibtop_inodedb *inodedb;
 	char filename [BUFSIZ];
@@ -76,7 +76,8 @@ glibtop_inodedb_open_s (glibtop *server, unsigned databases,
 }
 
 const char *
-glibtop_inodedb_lookup_s (glibtop *server, glibtop_inodedb *inodedb,
+glibtop_inodedb_lookup_s (glibtop G_GNUC_UNUSED *server,
+			  glibtop_inodedb *inodedb,
 			  u_int64_t device, u_int64_t inode)
 {
 	glibtop_inodedb_key key;
diff --git a/src/daemon/gnuserv.c b/src/daemon/gnuserv.c
index 82fd646c..1e80b61f 100644
--- a/src/daemon/gnuserv.c
+++ b/src/daemon/gnuserv.c
@@ -488,7 +488,7 @@ handle_signal (int sig)
 }
 
 int
-main (int argc, char *argv [])
+main (int G_GNUC_UNUSED argc, char G_GNUC_UNUSED *argv [])
 {
 	glibtop *server = glibtop_global_server;
 
diff --git a/src/daemon/server.c b/src/daemon/server.c
index 7f35c752..804f0721 100644
--- a/src/daemon/server.c
+++ b/src/daemon/server.c
@@ -51,10 +51,8 @@ GLIBTOP_SUID_PROC_MAP;
 #include <locale.h>
 
 int
-main(int argc, char *argv[])
+main(int G_GNUC_UNUSED argc, char G_GNUC_UNUSED *argv[])
 {
-	int fd, max_fd;
-
 	/* !!! WE ARE ROOT HERE - CHANGE WITH CAUTION !!! */
 
 	int uid, euid, gid, egid;
diff --git a/src/inodedb/file_by_inode.c b/src/inodedb/file_by_inode.c
index 5dd4cbab..783da2fd 100644
--- a/src/inodedb/file_by_inode.c
+++ b/src/inodedb/file_by_inode.c
@@ -54,8 +54,10 @@ main (int argc, const char *argv [])
 	if (!inodedb) exit (1);
 
 	filename = glibtop_inodedb_lookup (inodedb, device, inode);
-	if (!filename) exit (0);
+	if (!filename) exit (2);
 
-	fprintf (stderr, "FILENAME: %lu - %lu - '%s'\n",
-		 device, inode, filename);
+	fprintf (stderr, "FILENAME: %d - %d - '%s'\n",
+		 (int) device, (int) inode, filename);
+
+	exit (0);
 }
diff --git a/src/inodedb/mkinodedb.c b/src/inodedb/mkinodedb.c
index 51479d86..383ffd19 100644
--- a/src/inodedb/mkinodedb.c
+++ b/src/inodedb/mkinodedb.c
@@ -29,7 +29,7 @@
 #include <sys/stat.h>
 
 int
-main (int argc, const char *argv [])
+main (int argc, char *argv [])
 {
 	GDBM_FILE dbf;
 	char dirname [BUFSIZ];
@@ -92,7 +92,7 @@ main (int argc, const char *argv [])
 		directory = opendir (dirname);
 		if (!directory) continue;
 
-		while (entry = readdir (directory)) {
+		while ((entry = readdir (directory))) {
 			glibtop_inodedb_key key;
 			char filename [BUFSIZ];
 			datum d_key, d_content;
@@ -128,4 +128,6 @@ main (int argc, const char *argv [])
 	gdbm_close (dbf);
 
 	fclose (f);
+
+	exit (0);
 }
diff --git a/sysdeps/common/fsusage.c b/sysdeps/common/fsusage.c
index 9e6a84af..1021bf37 100644
--- a/sysdeps/common/fsusage.c
+++ b/sysdeps/common/fsusage.c
@@ -103,7 +103,7 @@ adjust_blocks (blocks, fromsize, tosize)
 static int
 get_fs_usage (path, disk, fsp)
      const char *path;
-     const char *disk;
+     const char G_GNUC_UNUSED *disk;
      struct fs_usage *fsp;
 {
 #ifdef STAT_STATFS3_OSF1
diff --git a/sysdeps/common/inodedb.c b/sysdeps/common/inodedb.c
index 83fd6405..d3faab5a 100644
--- a/sysdeps/common/inodedb.c
+++ b/sysdeps/common/inodedb.c
@@ -33,7 +33,7 @@
 
 glibtop_inodedb *
 glibtop_inodedb_open_s (glibtop *server, unsigned databases,
-			unsigned long cachesize)
+			unsigned long G_GNUC_UNUSED cachesize)
 {
 	glibtop_inodedb *inodedb;
 	char filename [BUFSIZ];
@@ -76,7 +76,8 @@ glibtop_inodedb_open_s (glibtop *server, unsigned databases,
 }
 
 const char *
-glibtop_inodedb_lookup_s (glibtop *server, glibtop_inodedb *inodedb,
+glibtop_inodedb_lookup_s (glibtop G_GNUC_UNUSED *server,
+			  glibtop_inodedb *inodedb,
 			  u_int64_t device, u_int64_t inode)
 {
 	glibtop_inodedb_key key;
diff --git a/sysdeps/common/mountlist.c b/sysdeps/common/mountlist.c
index 77f9755a..895dfce1 100644
--- a/sysdeps/common/mountlist.c
+++ b/sysdeps/common/mountlist.c
@@ -260,7 +260,7 @@ fstype_to_string (t)
 
 static struct mount_entry *
 read_filesystem_list (need_fs_type, all_fs)
-     int need_fs_type, all_fs;
+     int G_GNUC_UNUSED need_fs_type, G_GNUC_UNUSED all_fs;
 {
   struct mount_entry *mount_list;
   struct mount_entry *me;
diff --git a/sysdeps/common/xmalloc.c b/sysdeps/common/xmalloc.c
index fcf5c96d..afbaf0e4 100644
--- a/sysdeps/common/xmalloc.c
+++ b/sysdeps/common/xmalloc.c
@@ -64,7 +64,7 @@ glibtop_strdup_r (glibtop *server, const char *string)
 }
 
 void
-glibtop_free_r (glibtop *server, const void *ptr)
+glibtop_free_r (glibtop G_GNUC_UNUSED *server, const void *ptr)
 {
 	if (ptr) free ((void *) ptr);
 }
diff --git a/sysdeps/freebsd/close.c b/sysdeps/freebsd/close.c
index 55229adf..bf9b2a64 100644
--- a/sysdeps/freebsd/close.c
+++ b/sysdeps/freebsd/close.c
@@ -19,10 +19,11 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <glibtop.h>
 #include <glibtop/close.h>
 
 /* Closes pipe to gtop server. */
 
 void
-glibtop_close_l (glibtop *server)
+glibtop_close_p (glibtop G_GNUC_UNUSED *server)
 { }
diff --git a/sysdeps/freebsd/mem.c b/sysdeps/freebsd/mem.c
index f7b86f89..a0bc55d1 100644
--- a/sysdeps/freebsd/mem.c
+++ b/sysdeps/freebsd/mem.c
@@ -53,7 +53,7 @@ static struct nlist nlst [] = {
 };
 
 /* MIB array for sysctl */
-static int mib_length=2;
+/* static int mib_length=2; */
 static int mib [] = { CTL_VM, VM_METER };
 
 /* Init function. */
diff --git a/sysdeps/freebsd/nosuid.c b/sysdeps/freebsd/nosuid.c
index e43e5c9f..1e8b4665 100644
--- a/sysdeps/freebsd/nosuid.c
+++ b/sysdeps/freebsd/nosuid.c
@@ -21,12 +21,15 @@
 
 #include <glibtop.h>
 #include <glibtop/open.h>
+#include <glibtop/close.h>
 
 void
-glibtop_open_s (glibtop *server, const char *program_name,
-		const unsigned long features, const unsigned flags)
+glibtop_open_s (glibtop G_GNUC_UNUSED *server,
+		const char G_GNUC_UNUSED *program_name,
+		const unsigned long G_GNUC_UNUSED features,
+		const unsigned G_GNUC_UNUSED flags)
 { }
 
 void
-glibtop_close_s (glibtop *server)
+glibtop_close_s (glibtop G_GNUC_UNUSED *server)
 { }
diff --git a/sysdeps/freebsd/open.c b/sysdeps/freebsd/open.c
index 3cea527d..e4f7757d 100644
--- a/sysdeps/freebsd/open.c
+++ b/sysdeps/freebsd/open.c
@@ -48,7 +48,8 @@ glibtop_init_p (glibtop *server, const unsigned long features,
 
 void
 glibtop_open_p (glibtop *server, const char *program_name,
-		const unsigned long features, const unsigned flags)
+		const unsigned long G_GNUC_UNUSED features,
+		const unsigned G_GNUC_UNUSED flags)
 {
 #ifdef DEBUG
 	fprintf (stderr, "DEBUG (%d): glibtop_open_p ()\n", getpid ()); 
diff --git a/sysdeps/freebsd/prockernel.c b/sysdeps/freebsd/prockernel.c
index f278eaf4..7c3a4d61 100644
--- a/sysdeps/freebsd/prockernel.c
+++ b/sysdeps/freebsd/prockernel.c
@@ -69,7 +69,7 @@ glibtop_get_proc_kernel_p (glibtop *server,
 	struct user *u_addr = (struct user *)USRSTACK;
 	struct pstats pstats;
 	struct pcb pcb;
-	int f, count;
+	int count;
 
 	glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROC_KERNEL), 0);
 	
diff --git a/sysdeps/freebsd/procmap.c b/sysdeps/freebsd/procmap.c
index 2cb44efd..eb916b07 100644
--- a/sysdeps/freebsd/procmap.c
+++ b/sysdeps/freebsd/procmap.c
@@ -58,8 +58,6 @@ static const unsigned long _glibtop_sysdeps_map_entry =
 void
 glibtop_init_proc_map_p (glibtop *server)
 {
-	register int pagesize;
-
 	server->sysdeps.proc_map = _glibtop_sysdeps_proc_map;
 }
 
@@ -71,7 +69,7 @@ glibtop_get_proc_map_p (glibtop *server, glibtop_proc_map *buf,
 {
 	struct kinfo_proc *pinfo;
 	struct vm_map_entry entry, *first;
-	struct vmspace *vms, vmspace;
+	struct vmspace vmspace;
 	struct vm_object object;
 	glibtop_map_entry *maps;
 	struct vnode vnode;
diff --git a/sysdeps/freebsd/procmem.c b/sysdeps/freebsd/procmem.c
index 56c43aa3..8d446393 100644
--- a/sysdeps/freebsd/procmem.c
+++ b/sysdeps/freebsd/procmem.c
@@ -88,13 +88,10 @@ glibtop_get_proc_mem_p (glibtop *server, glibtop_proc_mem *buf,
 			pid_t pid)
 {
 	struct kinfo_proc *pinfo;
-	struct user *u_addr = (struct user *)USRSTACK;
 	struct vm_map_entry entry, *first;
 	struct vmspace *vms, vmspace;
 	struct vm_object object;
 	struct plimit plimit;
-	struct vnode vnode;
-	struct inode inode;
 	int count;
 
 	glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROC_MEM), 0);
diff --git a/sysdeps/freebsd/procsegment.c b/sysdeps/freebsd/procsegment.c
index 0db0095a..41b4a99a 100644
--- a/sysdeps/freebsd/procsegment.c
+++ b/sysdeps/freebsd/procsegment.c
@@ -44,11 +44,8 @@ glibtop_init_proc_segment_p (glibtop *server)
 void
 glibtop_get_proc_segment_p (glibtop *server,
 			    glibtop_proc_segment *buf,
-			    pid_t pid)
+			    pid_t G_GNUC_UNUSED pid)
 {
-	struct kinfo_proc *pinfo;
-	int *count;
-
 	glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROC_SEGMENT), 0);
 	
 	memset (buf, 0, sizeof (glibtop_proc_segment));
diff --git a/sysdeps/freebsd/proctime.c b/sysdeps/freebsd/proctime.c
index fc8f49cd..35584ccc 100644
--- a/sysdeps/freebsd/proctime.c
+++ b/sysdeps/freebsd/proctime.c
@@ -60,7 +60,6 @@ calcru(p, up, sp, ip)
 	quad_t totusec;
 	u_quad_t u, st, ut, it, tot;
 	long sec, usec;
-	struct timeval tv;
 
 	st = p->p_sticks;
 	ut = p->p_uticks;
@@ -105,9 +104,7 @@ glibtop_get_proc_time_p (glibtop *server, glibtop_proc_time *buf,
 	struct kinfo_proc *pinfo;
 	struct user *u_addr = (struct user *)USRSTACK;
 	struct pstats pstats;
-	struct pcb pcb;
-	int f, count;
-	quad_t totusec;
+	int count;
 
 	glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROC_TIME), 0);
 	
diff --git a/sysdeps/freebsd/swap.c b/sysdeps/freebsd/swap.c
index a3baec5d..f12c6e30 100644
--- a/sysdeps/freebsd/swap.c
+++ b/sysdeps/freebsd/swap.c
@@ -144,7 +144,7 @@ glibtop_get_swap_p (glibtop *server, glibtop_swap *buf)
 	sw_size = nswdev * sizeof (*sw);
 	sw = glibtop_malloc_r (server, sw_size);
 
-	if (kvm_read (server->machine.kd, ptr, sw, sw_size) != sw_size)
+	if (kvm_read (server->machine.kd, ptr, sw, sw_size) != (ssize_t) sw_size)
 		glibtop_error_io_r (server, "kvm_read (*swdevt)");
 
 	perdev = glibtop_malloc (nswdev * sizeof (*perdev));