diff -r -u pwauth-2.3.11/config.h pwauth-2.3.11-OK/config.h
--- pwauth-2.3.11/config.h	2013-10-04 15:59:08.000000000 +0200
+++ pwauth-2.3.11-OK/config.h	2017-07-14 16:36:40.485755461 +0200
@@ -123,7 +123,7 @@
 
 /* #define SHADOW_NONE		/**/
 /* #define SHADOW_BSD		/* FreeBSD, NetBSD, OpenBSD, BSDI, OS X */
-#define SHADOW_SUN		/* Linux, Solaris, IRIX */
+/* #define SHADOW_SUN		/* Linux, Solaris, IRIX */
 /* #define SHADOW_JFH		/**/
 /* #define SHADOW_MDW		/**/
 /* #define SHADOW_AIX		/* AIX (see also AUTHENTICATE_AIX) */
@@ -131,7 +131,7 @@
 
    /* HIGH-LEVEL OPTIONS */
 
-/* #define PAM			/* Linux PAM or OpenPAM */
+#define PAM			/* Linux PAM or OpenPAM */
 /* #define PAM_OLD_OS_X		/* PAM on OS X version 10.5 or older */
 /* #define PAM_SOLARIS		/* PAM on Solaris other than 2.6 */
 /* #define PAM_SOLARIS_26	/* PAM on Solaris 2.6 */
@@ -227,8 +227,8 @@
  * right with PAM.
  */
 
-#define NOLOGIN_FILE "/etc/nologin"	/**/
-#define MIN_NOLOGIN_UID 1		/**/
+/* #define NOLOGIN_FILE "/etc/nologin"	/**/
+/* #define MIN_NOLOGIN_UID 1		/**/
 
 
 /* Defining CHECK_LOGIN_EXPIRATION and CHECK_PASSWORD_EXPIRATION causes
@@ -279,7 +279,7 @@
  * to change the uid list.
  */
 
-#define SERVER_UIDS 30		/* user "wwwrun" on the author's system */
+#define SERVER_UIDS 48		/* user "apache" on the Fedora/Centos/RedHat system */
 
 
 /* If MIN_UNIX_UID is defined to an integer, logins with uid numbers less than
@@ -291,7 +291,7 @@
  * given value will be accepted).
  */
 
-#define MIN_UNIX_UID 500	/**/
+#define MIN_UNIX_UID 1000	/**/
 
 
 /* If IGNORE_CASE is defined, the login given is checked in two different
diff -r -u pwauth-2.3.11/lastlog.c pwauth-2.3.11-OK/lastlog.c
--- pwauth-2.3.11/lastlog.c	2009-04-04 06:45:56.000000000 +0200
+++ pwauth-2.3.11-OK/lastlog.c	2017-07-14 16:48:36.188144116 +0200
@@ -31,6 +31,7 @@
  * =======================================================================
  */
 
+#include <time.h>
 #include "pwauth.h"
 
 /* LASTLOG - update the system's lastlog */
diff -r -u pwauth-2.3.11/main.c pwauth-2.3.11-OK/main.c
--- pwauth-2.3.11/main.c	2013-12-12 17:39:38.000000000 +0100
+++ pwauth-2.3.11-OK/main.c	2017-07-14 16:47:29.324880977 +0200
@@ -44,7 +44,7 @@
 #endif
 
 
-main(int argc, char **argv)
+int main(int argc, char **argv)
 {
 #ifdef ENV_METHOD
     char *login, *passwd;
diff -r -u pwauth-2.3.11/Makefile pwauth-2.3.11-OK/Makefile
--- pwauth-2.3.11/Makefile	2011-10-05 15:45:04.000000000 +0200
+++ pwauth-2.3.11-OK/Makefile	2017-07-14 16:40:31.999730098 +0200
@@ -11,7 +11,7 @@
 LOCALFLAGS= -g 
 
 # For PAM on Redhat Linux
-# LIB=-lpam -ldl
+LIB=-lpam -ldl
 
 # For PAM on Solaris or OS X
 # LIB=-lpam
@@ -29,12 +29,12 @@
 
 pwauth: main.o auth_aix.o auth_bsd.o auth_hpux.o auth_mdw.o auth_openbsd.o \
 	auth_pam.o auth_sun.o fail_log.o lastlog.o nologin.o snooze.o
-	$(CC) -o pwauth $(CFLAGS) main.o auth_aix.o auth_bsd.o auth_hpux.o \
+	$(CC) -o pwauth $(CFLAGS) $(LDFLAGS) main.o auth_aix.o auth_bsd.o auth_hpux.o \
 		auth_mdw.o auth_openbsd.o auth_pam.o auth_sun.o fail_log.o \
 		lastlog.o nologin.o snooze.o $(LIB)
 
 checkfaillog: checkfaillog.o fail_check.o
-	$(CC) -o checkfaillog $(CFLAGS) checkfaillog.o fail_check.o $(LIB)
+	$(CC) -o checkfaillog $(CFLAGS) $(LDFLAGS) checkfaillog.o fail_check.o $(LIB)
 
 main.o: main.c config.h pwauth.h fail_log.h
 auth_aix.o: auth_aix.c config.h pwauth.h
diff -r -u pwauth-2.3.11/snooze.c pwauth-2.3.11-OK/snooze.c
--- pwauth-2.3.11/snooze.c	2011-10-05 15:18:44.000000000 +0200
+++ pwauth-2.3.11-OK/snooze.c	2017-07-14 16:47:33.154781481 +0200
@@ -42,7 +42,7 @@
  * sleep time, if other pwauth processes are in sleeps.
  */
 
-snooze(int seconds)
+void snooze(int seconds)
 {
     int slfd;
     struct flock lock;