diff --git a/toolchain/binutils/patches/2.40/005-libctf-update-regexp-to-allow-makeinfo-to-build-docu.patch b/toolchain/binutils/patches/2.40/005-libctf-update-regexp-to-allow-makeinfo-to-build-docu.patch
new file mode 100644
index 0000000..19af340
--- /dev/null
+++ b/toolchain/binutils/patches/2.40/005-libctf-update-regexp-to-allow-makeinfo-to-build-docu.patch
@@ -0,0 +1,70 @@
+From f7c5db99b76e8dde89335d794c82fcbfbf53c612 Mon Sep 17 00:00:00 2001
+From: Enze Li <enze.li@hotmail.com>
+Date: Sat, 14 Jan 2023 11:33:48 +0800
+Subject: [PATCH 05/50] libctf: update regexp to allow makeinfo to build
+ document
+
+While trying to build gdb on latest openSUSE Tumbleweed, I noticed the
+following warning,
+
+ checking for makeinfo... makeinfo --split-size=5000000
+ configure: WARNING:
+ *** Makeinfo is too old. Info documentation will not be built.
+
+then I checked the version of makeinfo, it said,
+======
+$ makeinfo --version
+texi2any (GNU texinfo) 7.0.1
+
+Copyright (C) 2022 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+======
+
+After digging a little bit, it became quite obvious that a dot is
+missing in regexp that makes it impossible to match versions higher than
+7.0, and here's the solution:
+
+-       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9][0-9])' >/dev/null 2>&1; then
++       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9]\.[0-9])' >/dev/null 2>&1; then
+
+However, Eli pointed out that the solution above has another problem: it
+will stop working when Texinfo 10.1 will be released.  Meanwhile, he
+suggested to solve this problem permanently.  That is, we don't care
+about the minor version for Texinfo > 6.9, we only care about the major
+version.
+
+In this way, the problem will be resolved permanently, thanks to Eli.
+
+libctf/ChangeLog:
+
+	* configure: Regenerated.
+	* configure.ac: Update regexp to match versions higher than 7.0.
+---
+ libctf/configure    | 2 +-
+ libctf/configure.ac | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/libctf/configure
++++ b/libctf/configure
+@@ -14865,7 +14865,7 @@ esac
+     # We require texinfo to be 6.3 or later, for a working synindex
+     # and validatemenus: otherwise we fall back to /bin/true.
+     if ${MAKEINFO} --version \
+-       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9][0-9])' >/dev/null 2>&1; then
++       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9]|[1-6][0-9])' >/dev/null 2>&1; then
+       build_info=yes
+     else
+         build_info=
+--- a/libctf/configure.ac
++++ b/libctf/configure.ac
+@@ -184,7 +184,7 @@ changequote(,)
+     # We require texinfo to be 6.3 or later, for a working synindex
+     # and validatemenus: otherwise we fall back to /bin/true.
+     if ${MAKEINFO} --version \
+-       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9][0-9])' >/dev/null 2>&1; then
++       | egrep 'texinfo[^0-9]*(6\.[3-9]|[7-9]|[1-6][0-9])' >/dev/null 2>&1; then
+       build_info=yes
+     else
+         build_info=