Check for libcrypt on AIX, otherwise static linking doesn't work.

configure

@@ -4674,6 +4674,51 @@ _ACEOF
 
   LIBS="-lcfg $LIBS"
 
+fi
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for crypt_r in -lcrypt" >&5
+$as_echo_n "checking for crypt_r in -lcrypt... " >&6; }
+if ${ac_cv_lib_crypt_crypt_r+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lcrypt  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char crypt_r ();
+int
+main ()
+{
+return crypt_r ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_crypt_crypt_r=yes
+else
+  ac_cv_lib_crypt_crypt_r=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_crypt_crypt_r" >&5
+$as_echo "$ac_cv_lib_crypt_crypt_r" >&6; }
+if test "x$ac_cv_lib_crypt_crypt_r" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBCRYPT 1
+_ACEOF
+
+  LIBS="-lcrypt $LIBS"
+
 fi
 
     ;;

configure.ac

@@ -121,6 +121,7 @@ case "$host" in
     # use some AIX specific libraries
     AC_CHECK_LIB(odm, odm_initialize)	
     AC_CHECK_LIB(cfg, _system_configuration)
+    AC_CHECK_LIB(crypt, crypt_r)
     ;;
   *-solaris2.0*)  
     AC_DEFINE(STUPID_SOLARIS_CHECKSUM_BUG)