Fix header file usage -- there were many unnecessary header files included in

busybox.h which slowed compiles.  I left only what was needed and then fixed up
all the apps to include their own header files.  I also fixed naming for pwd.h
and grp.h functions.  Tested to compile and run with libc5, glibc, and uClibc.
 -Erik

coreutils/basename.c

@@ -22,7 +22,8 @@
  */
 
 #include "busybox.h"
-#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 extern int basename_main(int argc, char **argv)
 {

coreutils/cat.c

@@ -22,7 +22,7 @@
  */
 
 #include "busybox.h"
-#include <stdio.h>
+#include <stdlib.h>
 
 extern int cat_main(int argc, char **argv)
 {

coreutils/chroot.c

@@ -25,6 +25,7 @@
 #include "busybox.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <errno.h>
 
 int chroot_main(int argc, char **argv)

coreutils/cmp.c

@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
+#include <stdlib.h>
 
 int cmp_main(int argc, char **argv)
 {

coreutils/date.c

@@ -31,6 +31,7 @@
 #include <unistd.h>
 #include <time.h>
 #include <stdio.h>
+#include <string.h>
 #include <getopt.h>
 
 

coreutils/dd.c

@@ -24,6 +24,10 @@
 #include "busybox.h"
 
 #include <sys/types.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
 #include <fcntl.h>
 
 static struct suffix_mult dd_suffixes[] = {

coreutils/df.c

@@ -24,8 +24,10 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <mntent.h>
 #include <sys/vfs.h>
+#include <getopt.h>
 
 extern const char mtab_file[];	/* Defined in utility.c */
 #ifdef BB_FEATURE_HUMAN_READABLE

coreutils/dirname.c

@@ -22,6 +22,8 @@
  */
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 extern int dirname_main(int argc, char **argv)
 {

coreutils/du.c

@@ -31,6 +31,8 @@
 #include <fcntl.h>
 #include <dirent.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
 #include <errno.h>
 
 #ifdef BB_FEATURE_HUMAN_READABLE
@@ -185,7 +187,7 @@ int du_main(int argc, char **argv)
 	return status;
 }
 
-/* $Id: du.c,v 1.34 2001/01/22 22:35:38 rjune Exp $ */
+/* $Id: du.c,v 1.35 2001/01/27 08:24:37 andersen Exp $ */
 /*
 Local Variables:
 c-file-style: "linux"

coreutils/echo.c

@@ -24,6 +24,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
 
 extern int 
 echo_main(int argc, char** argv)

coreutils/expr.c

@@ -35,9 +35,11 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <regex.h>
 #include <sys/types.h>
 
-#include <regex.h>
 
 /* The kinds of value we can have.  */
 enum valtype {

coreutils/head.c

@@ -25,6 +25,8 @@
 #include "busybox.h"
 #include <errno.h>
 #include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
 
 int head(int len, FILE *fp)
 {

coreutils/hostid.c

@@ -22,6 +22,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 extern int hostid_main(int argc, char **argv)
 {

coreutils/id.c

@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <getopt.h>
+#include <string.h>
 #include <sys/types.h>
 
 extern int id_main(int argc, char **argv)

coreutils/ln.c

@@ -28,7 +28,10 @@
 
 #include <stdio.h>
 #include <dirent.h>
+#include <string.h>
+#include <stdlib.h>
 #include <errno.h>
+#include <unistd.h>
 
 static const int LN_SYMLINK = 1;
 static const int LN_FORCE = 2;

coreutils/logname.c

@@ -22,6 +22,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 extern int logname_main(int argc, char **argv)
 {

coreutils/ls.c

@@ -59,6 +59,7 @@ static const int COLUMN_GAP = 2;			/* includes the file type char, if present */
 #include <time.h>
 #endif
 #include <string.h>
+#include <stdlib.h>
 
 #include <fcntl.h>
 #include <signal.h>

coreutils/mkdir.c

@@ -28,6 +28,8 @@
 
 #include <stdio.h>
 #include <errno.h>
+#include <string.h>
+#include <stdlib.h>
 
 static int parentFlag = FALSE;
 static mode_t mode = 0777;

coreutils/mkfifo.c

@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <errno.h>
+#include <stdlib.h>
 
 extern int mkfifo_main(int argc, char **argv)
 {

coreutils/mknod.c

@@ -26,6 +26,8 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
 
 int mknod_main(int argc, char **argv)
 {

coreutils/pwd.c

@@ -25,6 +25,8 @@
 #include <stdio.h>
 #include <dirent.h>
 #include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 extern int pwd_main(int argc, char **argv)
 {

coreutils/rm.c

@@ -28,6 +28,8 @@
 #include <utime.h>
 #include <dirent.h>
 #include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 static int recursiveFlag = FALSE;
 static int forceFlag = FALSE;

coreutils/rmdir.c

@@ -25,6 +25,8 @@
 #include "busybox.h"
 #include <stdio.h>
 #include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 extern int rmdir_main(int argc, char **argv)
 {

coreutils/sleep.c

@@ -23,6 +23,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 extern int sleep_main(int argc, char **argv)
 {

coreutils/sort.c

@@ -22,6 +22,8 @@
  */
 
 #include "busybox.h"
+#include <getopt.h>
+#include <stdlib.h>
 
 int compare_ascii(const void *x, const void *y)
 {

coreutils/sync.c

@@ -23,6 +23,7 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <unistd.h>
 
 extern int sync_main(int argc, char **argv)
 {

coreutils/tail.c

@@ -23,8 +23,12 @@
 
 #include "busybox.h"
 
-#include <sys/types.h>
 #include <fcntl.h>
+#include <getopt.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
 
 static struct suffix_mult tail_suffixes[] = {
 	{ "b", 512 },

coreutils/touch.c

@@ -28,6 +28,8 @@
 #include <fcntl.h>
 #include <utime.h>
 #include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
 
 extern int touch_main(int argc, char **argv)
 {

coreutils/tr.c

@@ -191,9 +191,9 @@ extern int tr_main(int argc, char **argv)
 			map(input, input_length, output, output_length);
 		}
 		for (i = 0; i < input_length; i++)
-			invec[input[i]] = TRUE;
+			invec[(int)input[i]] = TRUE;
 		for (i = 0; i < output_length; i++)
-			outvec[output[i]] = TRUE;
+			outvec[(int)output[i]] = TRUE;
 	}
 	convert();
 	return (0);

coreutils/tty.c

@@ -22,6 +22,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 #include <sys/types.h>
 
 extern int tty_main(int argc, char **argv)

coreutils/uname.c

@@ -33,6 +33,7 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/types.h>
 #include <sys/utsname.h>
 

coreutils/uniq.c

@@ -26,7 +26,9 @@
 #include "busybox.h"
 #include <stdio.h>
 #include <string.h>
+#include <getopt.h>
 #include <errno.h>
+#include <stdlib.h>
 
 static int print_count;
 static int print_uniq = 1;

coreutils/uudecode.c

@@ -27,6 +27,10 @@
 #include <stdio.h>
 #include <errno.h>
 #include <getopt.h>
+#include <string.h>
+#include <stdlib.h>
+#include "pwd_grp/pwd.h"
+#include "pwd_grp/grp.h"
 
 /*struct passwd *getpwnam();*/
 

coreutils/uuencode.c

@@ -27,6 +27,7 @@
 #include <stdio.h>
 #include <errno.h>
 #include <getopt.h>
+#include <stdlib.h>
 
 #define	RW (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
 

coreutils/wc.c

@@ -23,6 +23,7 @@
 #include "busybox.h"
 #include <stdio.h>
 #include <getopt.h>
+#include <stdlib.h>
 
 static int total_lines, total_words, total_chars, max_length;
 static int print_lines, print_words, print_chars, print_length;

coreutils/whoami.c

@@ -22,6 +22,8 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 extern int whoami_main(int argc, char **argv)
 {

coreutils/yes.c

@@ -22,6 +22,7 @@
 
 #include "busybox.h"
 #include <stdio.h>
+#include <stdlib.h>
 
 extern int yes_main(int argc, char **argv)
 {