Cross-compile and build OpenSSL for 32-bit ARM (with hardware floating point) on an Intel/AMD Ubuntu 18.04 computer

gistfile1.txt

# Run the commands in a docker container: docker run -it --rm ubuntu:18.04
cat > /etc/apt/sources.list <<EOF
deb http://archive.ubuntu.com/ubuntu/ bionic main restricted
deb-src http://archive.ubuntu.com/ubuntu/ bionic main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic universe
deb-src http://archive.ubuntu.com/ubuntu/ bionic universe
deb http://archive.ubuntu.com/ubuntu/ bionic-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates universe
deb http://archive.ubuntu.com/ubuntu/ bionic multiverse
deb-src http://archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates multiverse
deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu bionic-security main restricted
deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
EOF

apt update
apt-get install -y crossbuild-essential-armhf dpkg-dev devscripts
apt-get source openssl
dpkg --add-architecture armhf
apt-get build-dep -y -a armhf openssl

cd openssl-1.1.1

# Patch up faulty rules file
sed -i "s/dh_shlibdeps.*libssl/env LD_LIBRARY_PATH=\/usr\/arm-linux-gnueabi\/libhf:.\/build_shared dh_shlibdeps -a -L libssl1.1/g" ./debian/rules
env DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage -b -aarmhf -uc -us