X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=configure.ac;h=f624a0d45755408f98eef4afbacd9748874c4f39;hp=cc033195802179a2722266e7c4b60698e518e319;hb=bed830e383db9d9fc563897442cc441981396504;hpb=78dc4685a152943c73fcd9cadb8f6d8ecc6d1d79

diff --git a/configure.ac b/configure.ac
index cc03319..f624a0d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -449,6 +449,33 @@ AC_LINK_IFELSE(
       )
     ]  
 )
+
+dnl is time_t long or long long ?
+AC_DEFINE([TIME_T_IS_LONG], [], [time_t is long])
+AC_DEFINE([TIME_T_IS_LONG_LONG], [], [time_t is long long])
+AC_MSG_CHECKING([the type of time_t])
+AC_RUN_IFELSE(
+    AC_LANG_PROGRAM(
+        [[#include <time.h>]],
+        [[if (sizeof(long) != sizeof(time_t)) return 1; ]]
+        ),
+    [ AC_MSG_RESULT([time_t is long])
+      AC_DEFINE([TIME_T_IS_LONG])
+    ],
+    [ AC_RUN_IFELSE(
+        AC_LANG_PROGRAM(
+        [[#include <time.h>]],
+        [[if (sizeof(long long) != sizeof(time_t)) return 1; ]]
+        ),
+        [
+          AC_MSG_RESULT([time_t is long long])
+          AC_DEFINE([TIME_T_IS_LONG_LONG])
+        ],
+        [AC_MSG_ERROR([can not figure type of time_t])]
+      )
+    ]  
+)
+
 AC_LANG_POP(C)
 
 CONFIGURE_PART(Find 3rd-Party Libraries)