static-sshd build script

make.sh

#!/bin/sh

set -ex

# run it to build a sshd for amd64
# docker run --rm -v $(pwd):/tmp -w /tmp -e ARCH=amd64 alpine /tmp/make.sh

# library version
OPENSSH_VERSION=V_8_5_P1

top="$(pwd)"
build="$top/build"
dist="$top/dist"
artifacts="$top/artifacts"

rm -rf "$build" "$dist"
mkdir -p "$build" "$dist" "$artifacts"

# add dependency
apk add build-base clang openssl-dev nghttp2-dev nghttp2-static libssh2-dev libssh2-static autoconf automake
apk add openssl-libs-static zlib-static || true

# download openssh
wget https://github.com/openssh/openssh-portable/archive/refs/tags/$OPENSSH_VERSION.tar.gz -O $dist/openssh-$OPENSSH_VERSION.tar.gz
gzip -dc $dist/openssh-*.tar.gz |(cd "$build" && tar xf -)
cd "$build"/openssh-*

# configure and make
export CC=clang
autoreconf
LDFLAGS="-static" PKG_CONFIG="pkg-config --static" ./configure --disable-shared --enable-static --with-privsep-user=nobody --with-privsep-path="/var/run/sshd" --sysconfdir=/etc/ssh
make -j4 V=1 LDFLAGS="-static -all-static -L. -Lopenbsd-compat"
cp $build/openssh*/sshd $artifacts