diff --git a/config.h.in b/config.h.in
index cc221245..6abb2cb4 100644
--- a/config.h.in
+++ b/config.h.in
@@ -1,10 +1,11 @@
 /* config.h.in.  Generated from configure.in by autoheader.  */
 
+/* Define to 1 if you have the `cfmakeraw' function. */
+#undef HAVE_CFMAKERAW
+
 /* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */
 #undef HAVE_DOPRNT
 
-#undef HAVE_CFMAKERAW
-
 /* Define to 1 if you have the `endpwent' function. */
 #undef HAVE_ENDPWENT
 
@@ -26,12 +27,6 @@
 /* Define to 1 if you have the `crypto' library (-lcrypto). */
 #undef HAVE_LIBCRYPTO
 
-/* Define to 1 if you have the `nsl' library (-lnsl). */
-#undef HAVE_LIBNSL
-
-/* Define to 1 if you have the `resolv' library (-lresolv). */
-#undef HAVE_LIBRESOLV
-
 /* Define to 1 if you have the `z' library (-lz). */
 #undef HAVE_LIBZ
 
@@ -60,19 +55,31 @@
 /* Define to 1 if you have the <openssl/blowfish.h> header file. */
 #undef HAVE_OPENSSL_BLOWFISH_H
 
+/* Define to 1 if you have the <pam/pam_appl.h> header file. */
+#undef HAVE_PAM_PAM_APPL_H
+
 /* Define to 1 if you have the `poll' function. */
 #undef HAVE_POLL
 
+/* Define to 1 if you have the <pty.h> header file. */
+#undef HAVE_PTY_H
+
 /* Define to 1 if your system has a GNU libc compatible `realloc' function,
    and to 0 otherwise. */
 #undef HAVE_REALLOC
 
+/* Define to 1 if you have the <security/pam_appl.h> header file. */
+#undef HAVE_SECURITY_PAM_APPL_H
+
 /* Define to 1 if you have the `select' function. */
 #undef HAVE_SELECT
 
 /* Define to 1 if you have the `socket' function. */
 #undef HAVE_SOCKET
 
+/* Define to 1 if you want to enable SSH1 */
+#undef HAVE_SSH1
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
@@ -172,7 +179,3 @@
 
 /* Define to rpl_realloc if the replacement function should be used. */
 #undef realloc
-
-#undef HAVE_SSH1
-#undef HAVE_PTY_H
-#undef HAVE_STDINT_H
diff --git a/configure b/configure
index 2281be3e..5df9f8c0 100755
--- a/configure
+++ b/configure
@@ -3691,9 +3691,11 @@ done
 
 
 
+
+
 for ac_header in fcntl.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h \
 sys/time.h termios.h unistd.h openssl/aes.h openssl/blowfish.h zlib.h \
-sys/poll.h stdint.h pty.h
+sys/poll.h stdint.h pty.h pam/pam_appl.h security/pam_appl.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
diff --git a/configure.in b/configure.in
index 7f829915..65f356a7 100644
--- a/configure.in
+++ b/configure.in
@@ -47,7 +47,7 @@ AC_SEARCH_LIBS([gethostbyname],[nsl resolv])
 AC_HEADER_STDC
 AC_CHECK_HEADERS([fcntl.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h \
 sys/time.h termios.h unistd.h openssl/aes.h openssl/blowfish.h zlib.h \
-sys/poll.h stdint.h pty.h])
+sys/poll.h stdint.h pty.h pam/pam_appl.h security/pam_appl.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
diff --git a/sftp_server/userauth.c b/sftp_server/userauth.c
index b5a6055d..892b485e 100644
--- a/sftp_server/userauth.c
+++ b/sftp_server/userauth.c
@@ -23,7 +23,16 @@ MA 02111-1307, USA. */
 #include <libssh/libssh.h>
 #include <libssh/server.h>
 //#include <libssh/sftp.h>
-#include <security/pam_appl.h>
+#ifdef HAVE_SECURITY_PAM_APPL_H
+  #include <security/pam_appl.h>
+#else 
+  #ifdef HAVE_PAM_PAM_APPL_H
+    #include <pam/pam_appl.h>
+  #else
+    #error your system has'nt PAM development files installed
+  #endif
+#endif
+
 #include <pwd.h>
 #include <errno.h>
 #include <string.h>