[PATCH] check for loff_t, it may not exist

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On some systems, loff_t does not exist.  Define it as int64_t in that
case.

Signed-off-by: Fabian Groffen <grobian@xxxxxxxxxx>

diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -574,6 +574,7 @@
 AC_CHECK_TYPES([union semun], [], [], [[
 #include <sys/sem.h>
 ]])
+AC_CHECK_TYPES(loff_t)
 
 
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
diff --git a/include/c.h b/include/c.h
--- a/include/c.h
+++ b/include/c.h
@@ -93,5 +93,9 @@
 }
 #endif
 
+#ifndef HAVE_LOFF_T
+typedef int64_t loff_t;
+#endif
+
 
 #endif /* UTIL_LINUX_C_H */
--
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