https://bugs.gentoo.org/559572
make sure we can handle large files properly (like log files over 2GiB)
--- a/configure.ac+++ b/configure.ac@@ -10,6 +10,8 @@AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
+AC_SYS_LARGEFILE+AC_CHECK_LIB([popt],[poptParseArgvString],,
AC_MSG_ERROR([libpopt required but not found]))