diff -Naur libcap-1.10.blfs.diff9/libcap/cap_extint.c libcap-1.10/libcap/cap_extint.c
--- libcap-1.10.blfs.diff9/libcap/cap_extint.c	1999-04-17 18:16:31.000000000 -0400
+++ libcap-1.10/libcap/cap_extint.c	2007-05-25 15:17:07.000000000 -0400
@@ -16,8 +16,8 @@
  * length (void *))
  */
 #define CAP_EXT_MAGIC "\220\302\001\121"
-#define CAP_EXT_MAGIC_SIZE 4
-const static __u8 external_magic[CAP_EXT_MAGIC_SIZE+1] = CAP_EXT_MAGIC;
+#define CAP_EXT_MAGIC_SIZE 4UL
+static const __u8 external_magic[CAP_EXT_MAGIC_SIZE+1] = CAP_EXT_MAGIC;
 
 struct cap_ext_struct {
     __u8 magic[CAP_EXT_MAGIC_SIZE];
@@ -31,7 +31,7 @@
  * return size of external capability set
  */
 
-ssize_t cap_size(cap_t caps)
+ssize_t cap_size(cap_t __attribute__ ((unused)) caps)
 {
     return sizeof(struct cap_ext_struct);
 }
@@ -49,7 +49,8 @@
     int i;
 
     /* valid arguments? */
-    if (!good_cap_t(cap_d) || length < sizeof(struct cap_ext_struct)
+    if (!good_cap_t(cap_d) || length < 0
+	|| (size_t) length < sizeof(struct cap_ext_struct)
 	|| cap_ext == NULL) {
 	errno = EINVAL;
 	return -1;
@@ -60,7 +61,7 @@
     result->length_of_capset = CAP_SET_SIZE;
 
     for (i=0; i<NUMBER_OF_CAP_SETS; ++i) {
-	int j;
+	unsigned int j;
 	for (j=0; j<CAP_SET_SIZE; ) {
 	    __u32 val = *from++;
 
@@ -90,8 +91,8 @@
     const struct cap_ext_struct *export =
 	(const struct cap_ext_struct *) cap_ext;
     cap_t cap_d;
-    int set, blen;
-    __u32 * to = (__u32 *) &cap_d->set;
+    unsigned int set, blen;
+    __u32 * to;
 
     /* Does the external representation make sense? */
     if (export == NULL || !memcmp(export->magic, external_magic
@@ -105,9 +106,10 @@
        return NULL;
 
     blen = export->length_of_capset;
+    to = (__u32 *) &cap_d->set;
     for (set=0; set<=NUMBER_OF_CAP_SETS; ++set) {
-	int blk;
-	int bno = 0;
+	unsigned int blk;
+	unsigned int bno = 0;
 	for (blk=0; blk<(CAP_SET_SIZE/4); ++blk) {
 	    __u32 val = 0;
 
diff -Naur libcap-1.10.blfs.diff9/libcap/cap_flag.c libcap-1.10/libcap/cap_flag.c
--- libcap-1.10.blfs.diff9/libcap/cap_flag.c	1999-04-17 18:16:31.000000000 -0400
+++ libcap-1.10/libcap/cap_flag.c	2007-05-25 15:17:58.000000000 -0400
@@ -26,7 +26,7 @@
      */
 
     if (raised && good_cap_t(cap_d) && value >= 0 && value < __CAP_BITS
-	&& set >= 0 && set < NUMBER_OF_CAP_SETS) {
+	&& (int) set >= 0 && set < NUMBER_OF_CAP_SETS) {
 	__cap_s *cap_p = (__cap_s *) (set*CAP_SET_SIZE
 				      + (__u8 *) &cap_d->set);
 
@@ -56,7 +56,7 @@
      */
 
     if (good_cap_t(cap_d) && no_values > 0 && no_values <= __CAP_BITS
-	&& (set >= 0) && (set < NUMBER_OF_CAP_SETS)
+	&& (int) set >= 0 && set < NUMBER_OF_CAP_SETS
 	&& (raise == CAP_SET || raise == CAP_CLEAR) ) {
 	int i;
 	for (i=0; i<no_values; ++i) {
diff -Naur libcap-1.10.blfs.diff9/Make.Rules libcap-1.10/Make.Rules
--- libcap-1.10.blfs.diff9/Make.Rules	2007-05-25 15:01:36.000000000 -0400
+++ libcap-1.10/Make.Rules	2007-05-25 15:20:29.000000000 -0400
@@ -44,7 +44,7 @@
 CC=gcc
 COPTFLAGS=-O2
 DEBUG=-g #-DDEBUG
-WARNINGS=-D_GNU_SOURCE -Wall -Wshadow -Wformat=2
+WARNINGS=-D_GNU_SOURCE -Wall -Wshadow -Wformat=2 -Wextra
 LD=ld
 LDFLAGS=-s #-g
 
diff -Naur libcap-1.10.blfs.diff9/progs/setpcaps.c libcap-1.10/progs/setpcaps.c
--- libcap-1.10.blfs.diff9/progs/setpcaps.c	1999-11-18 01:04:26.000000000 -0500
+++ libcap-1.10/progs/setpcaps.c	2007-05-25 15:19:36.000000000 -0400
@@ -31,15 +31,13 @@
 
 #define MAXCAP  2048
 
-static int read_caps(int quiet, const char *filename, char *buffer)
+static int read_caps(int quiet, char *buffer, size_t size)
 {
-    int i=MAXCAP;
-
     if (!quiet) {
 	fprintf(stderr,	"Please enter caps for file [empty line to end]:\n");
     }
-    while (i > 0) {
-	int j = read(STDIN_FILENO, buffer, i);
+    while (size > 0) {
+	ssize_t j = read(STDIN_FILENO, buffer, size);
 
 	if (j < 0) {
 	    fprintf(stderr, "\n[Error - aborting]\n");
@@ -53,14 +51,14 @@
 
 	/* move on... */
 
-	i -= j;
+	size -= j;
 	buffer += j;
     }
 
     /* <NUL> terminate */
     buffer[0] = '\0';
 
-    return (i < MAXCAP ? 0:-1);
+    return (size < MAXCAP ? 0 : -1);
 }
 
 int main(int argc, char **argv)
@@ -82,7 +80,7 @@
 	    continue;
 	}
 	if (!strcmp(*argv,"-")) {
-	    retval = read_caps(quiet, *argv, buffer);
+	    retval = read_caps(quiet, buffer, sizeof(buffer)-1);
 	    if (retval)
 		usage();
 	    text = buffer;