https://github.com/libconfuse/libconfuse/commit/e967a307bf570306acd949513559e044b0da1f2d
From: Mike Frysinger <vapier@chromium.org>
Date: Tue, 10 Jan 2023 14:03:09 -0500
Subject: [PATCH] configure.ac: enable automatic LFS support

Automatically enable large filesystem support so we use the newer
interfaces when interacting with the filesystem.  Without this,
code that tries to stat a file with 64-bit inodes can fail if the
stat structure is only 32-bit (which is common on x86 & arm).  On
Linux, this can manifest with some filesystems more often than
others.

Practically speaking, since libconfuse doesn't do too much file
I/O, the overhead should be non-existent.  Especially since the
C library (e.g. glibc) is already using the 64-bit syscall even
if the function call was 32-bit.

On systems that have 64-bit stat already (which is common on x86_64
and aarch64), there is no overhead as the code is exactly the same.
--- a/configure.ac
+++ b/configure.ac
@@ -31,6 +31,9 @@ AM_GNU_GETTEXT([external])
 AM_GNU_GETTEXT_VERSION([0.19.6])
 AM_GNU_GETTEXT_REQUIRE_VERSION([0.19.6])

+# Checks for OS settings.
+AC_SYS_LARGEFILE
+
 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([unistd.h string.h strings.h sys/stat.h windows.h])