build system overhaul
diff --git a/libpwdgrp/pwd_grp_internal.c b/libpwdgrp/pwd_grp_internal.c
index 39c11f6..866ed36 100644
--- a/libpwdgrp/pwd_grp_internal.c
+++ b/libpwdgrp/pwd_grp_internal.c
@@ -18,96 +18,45 @@
  *
  */
 
-#include <features.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <stddef.h>
-#include <errno.h>
-#include <assert.h>
-#include <ctype.h>
-
-#include "pwd_.h"
-#include "grp_.h"
-#include "shadow_.h"
-#include "libbb.h"
-
-#ifndef _PATH_SHADOW
-#define	_PATH_SHADOW	"/etc/shadow"
-#endif
-#ifndef _PATH_PASSWD
-#define	_PATH_PASSWD	"/etc/passwd"
-#endif
-#ifndef _PATH_GROUP
-#define	_PATH_GROUP	"/etc/group"
-#endif
-
-/**********************************************************************/
-/* Sizes for statically allocated buffers. */
-
-/* If you change these values, also change _SC_GETPW_R_SIZE_MAX and
- * _SC_GETGR_R_SIZE_MAX in libc/unistd/sysconf.c to match */
-#define PWD_BUFFER_SIZE 256
-#define GRP_BUFFER_SIZE 256
-
-/**********************************************************************/
-/* Prototypes for internal functions. */
-
-extern int __parsepwent(void *pw, char *line);
-extern int __parsegrent(void *gr, char *line);
-extern int __parsespent(void *sp, char *line);
-
-extern int __pgsreader(int (*__parserfunc)(void *d, char *line), void *data,
-					   char *__restrict line_buff, size_t buflen, FILE *f);
-
-
 #ifndef GETXXKEY_R_FUNC
 #error GETXXKEY_R_FUNC is not defined!
 #endif
-/**********************************************************************/
-#ifdef GETXXKEY_R_FUNC
 
 int GETXXKEY_R_FUNC(DO_GETXXKEY_R_KEYTYPE key,
-					GETXXKEY_R_ENTTYPE *__restrict resultbuf,
-					char *__restrict buffer, size_t buflen,
-					GETXXKEY_R_ENTTYPE **__restrict result)
+				GETXXKEY_R_ENTTYPE *__restrict resultbuf,
+				char *__restrict buffer, size_t buflen,
+				GETXXKEY_R_ENTTYPE **__restrict result)
 {
 	FILE *stream;
 	int rv;
 
 	*result = NULL;
 
-	if (!(stream = fopen(DO_GETXXKEY_R_PATHNAME, "r"))) {
-		rv = errno;
-	} else {
-		do {
-			if (!(rv = __pgsreader(GETXXKEY_R_PARSER, resultbuf,
-								   buffer, buflen, stream))
-				) {
-				if (GETXXKEY_R_TEST(resultbuf)) { /* Found key? */
-					*result = resultbuf;
-					break;
-				}
-			} else {
-				if (rv == ENOENT) {	/* end-of-file encountered. */
-					rv = 0;
-				}
+	stream = fopen(DO_GETXXKEY_R_PATHNAME, "r");
+	if (!stream)
+		return errno;
+	while (1) {
+		rv = __pgsreader(GETXXKEY_R_PARSER, resultbuf, buffer, buflen, stream);
+		if (!rv) {
+			if (GETXXKEY_R_TEST(resultbuf)) { /* Found key? */
+				*result = resultbuf;
 				break;
 			}
-		} while (1);
-		fclose(stream);
+		} else {
+			if (rv == ENOENT) {	/* end-of-file encountered. */
+				rv = 0;
+			}
+			break;
+		}
 	}
+	fclose(stream);
 
 	return rv;
 }
 
-#endif
-/**********************************************************************/
 #undef GETXXKEY_R_FUNC
 #undef GETXXKEY_R_PARSER
 #undef GETXXKEY_R_ENTTYPE
 #undef GETXXKEY_R_TEST
 #undef DO_GETXXKEY_R_KEYTYPE
 #undef DO_GETXXKEY_R_PATHNAME
-