This is no longer relevant upstream as of this commit:

commit ab12f8919f0f7beff0b8db974e98285ede6a285d
Author: Hannes von Haugwitz <hannes@vonhaugwitz.com>
Date:   Sun Sep 22 07:26:28 2019 +0200

    Use AC_SYS_LARGEFILE for large-file support

    - closes #16
    - require C99 compatible compiler
    - stop using readdir_r in favor of readdir
    - remove unused 'size_o member in db_line struct
    - '--disable-largefile' now disables LFS

diff --git a/configure.ac b/configure.ac
index cafe16e95ed68c9f..144d55a9146548c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -574,9 +574,10 @@ AC_CACHE_CHECK([for LFS ino_t],ac_cv_ino_type,[
 AC_TRY_RUN([
 #include <unistd.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-main() { struct stat64 st; ino64_t s; if (sizeof(ino_t) == sizeof(ino64_t)) exit(1); exit((lstat64("/dev/null", &st)==0)?0:1); }],
+int main() { struct stat64 st; ino64_t s; if (sizeof(ino_t) == sizeof(ino64_t)) exit(1); exit((lstat64("/dev/null", &st)==0)?0:1); }],
 ac_cv_ino_type=ino64_t,ac_cv_ino_type=ino_t,ac_cv_ino_type=cross)])
 AIDE_INO_TYPE=$ac_cv_ino_type