diff --git a/binutils/binutils-2.40-focal.tar.xz b/binutils/binutils-2.40-focal.tar.xz
new file mode 100644
index 0000000..01bd86f
Binary files /dev/null and b/binutils/binutils-2.40-focal.tar.xz differ
diff --git a/binutils/build.sh b/binutils/build.sh
new file mode 100644
index 0000000..4753744
--- /dev/null
+++ b/binutils/build.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+
+# This script is meant to make it easy to build GNU binutils using a Docker container.
+
+THIS=$(readlink -e $0)
+USER_ID=`id -u`
+GROUP_ID=`id -g`
+VERSION=2.40
+UBUNTU=focal
+
+PKG=binutils-${VERSION}
+OUT=$PKG-$UBUNTU
+
+wget -nc https://ftp.gnu.org/gnu/binutils/$PKG.tar.xz
+tar xf $PKG.tar.xz
+
+mkdir -p $OUT | true
+
+docker run -v $(pwd):/src -w /src -u root -t yuzuemu/build-environments:linux-fresh /bin/bash /src/docker.sh $VERSION $UBUNTU
+
+cp -v $THIS $OUT
+tar cv $OUT | xz -T0 -c | split --bytes=90MB - $OUT.tar.xz.
diff --git a/binutils/docker.sh b/binutils/docker.sh
new file mode 100644
index 0000000..c80d3d9
--- /dev/null
+++ b/binutils/docker.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+THIS=$(readlink -e $0)
+VERSION=$1
+UBUNTU=$2
+
+OUT=/src/binutils-$VERSION-$UBUNTU
+
+mkdir build
+cd build
+/src/binutils-$VERSION/configure
+make -j$(nproc)
+
+make -j$(nproc) install DESTDIR=$OUT
+cp $THIS $OUT