--- pam-1.1.1.orig/acinclude.m4
+++ pam-1.1.1/acinclude.m4
@@ -0,0 +1,48 @@
+dnl
+dnl JAPHAR_GREP_CFLAGS(flag, cmd_if_missing, cmd_if_present)
+dnl
+dnl From Japhar.  Report changes to japhar@hungry.com
+dnl
+AC_DEFUN([JAPHAR_GREP_CFLAGS],
+[case "$CFLAGS" in
+"$1" | "$1 "* | *" $1" | *" $1 "* )
+  ifelse($#, 3, [$3], [:])
+  ;;
+*)
+  $2
+  ;;
+esac
+])
+
+dnl
+dnl Test for __attribute__ ((unused))
+dnl Based on code from the tcpdump version 3.7.2 source.
+dnl
+
+AC_DEFUN([AC_C___ATTRIBUTE__], [
+AC_MSG_CHECKING(for __attribute__)
+AC_CACHE_VAL(ac_cv___attribute__, [
+AC_TRY_COMPILE([
+#include <stdlib.h>
+static void foo (void) __attribute__ ((unused));
+
+static void
+foo (void)
+{
+  exit(1);
+}
+],
+[
+  exit (0);
+],
+ac_cv___attribute__=yes,
+ac_cv___attribute__=no)])
+if test "$ac_cv___attribute__" = "yes"; then
+  AC_DEFINE(UNUSED, __attribute__ ((unused)), [define if your compiler has __att
+ribute__ ((unused))])
+else
+  AC_DEFINE(UNUSED,,)
+fi
+AC_MSG_RESULT($ac_cv___attribute__)
+])
+