Replace autoconf int max test with simple define

configure.ac

@@ -40,7 +40,6 @@ AC_DEFINE_UNQUOTED([CANONICAL_HOST], "$host", [Canonical host string.])
 AS_IF([test "x$host_cpu" = "xmips" || test "x$host_cpu" = "xmipsel" ||
        test "x$host_cpu" = "xmips64" || test "x$host_cpu" = "xmips64el"],
       [AC_DEFINE(ARCH_MIPS, [], [Whether on mips arch])])
-SD_CHECK_MAX_INT_SIZE([time_t], [#include <time.h>])
 
 LT_PREREQ(2.2)
 LT_INIT([disable-static])

m4/sd_check_max_int_size.m4

@@ -1,27 +0,0 @@
-dnl Find what INT_MAX define to use for a type
-
-#serial 1
-
-ifdef([AC_TR_SH],[], [
-define([AC_TR_SH],
-       [patsubst(translit([[$1]], [*+], [pp]), [[^a-zA-Z0-9_]], [_])])
-define([AC_TR_CPP],
-       [patsubst(translit([[$1]],
-                          [*abcdefghijklmnopqrstuvwxyz],
-                          [PABCDEFGHIJKLMNOPQRSTUVWXYZ]),
-                 [[^A-Z0-9_]], [_])])
-])
-
-AC_DEFUN([SD_CHECK_MAX_INT_SIZE],
-        [AC_CHECK_SIZEOF([long],,)
-         AC_CHECK_SIZEOF([long long],,)
-         AC_CHECK_SIZEOF([$1],,[$2])
-         AS_CASE([$ac_cv_sizeof_[]AC_TR_SH($1)],
-                 [$ac_cv_sizeof_long], [sd_type_max=LONG_MAX],
-                 [$ac_cv_sizeof_long_long], [sd_type_max=LONG_LONG_MAX],
-                 [AC_MSG_ERROR([Don't know how to map $1 to an integer])])
-         AC_DEFINE_UNQUOTED(AC_TR_CPP($1_MAX), [$sd_type_max],
-                   [what int to use to maximize $1])
-         AC_MSG_CHECKING([what int to to use to maximize $1])
-         AC_MSG_RESULT([$sd_type_max])
-])

src/core/manager.c

@@ -81,6 +81,8 @@
 /* Where clients shall send notification messages to */
 #define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
 
+#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+
 static int manager_setup_notify(Manager *m) {
         union {
                 struct sockaddr sa;