#!/bin/sh

#

# Download curl and compile it with ECH

#

set -eux

CURL_DESTDIR=${CURL_DESTDIR:-${HOME}/opt}

CURL_TMPDIR=${CURL_TMPDIR:-/tmp/download-cache}

SSL_LIB=${SSL_LIB:-}

CURL_VERSION=git-master

SSL_OPT=--with-openssl

SSL_LDFLAGS=

curl_download() {

cd "${CURL_TMPDIR}"

# update the curl version using the commit ID of the branch HEAD

branch_name="${CURL_VERSION##git-}"

CURL_VERSION=git-$(wget -q -O- "https://api.github.com/repos/curl/curl/branches/$branch_name" | grep '"sha":' | head -n 1 | sed -E 's/ *"sha": "(.*)",/\1/')

wget -q -O "${CURL_TMPDIR}/curl-${CURL_VERSION}.tar.gz" \

"https://github.com/curl/curl/archive/${CURL_VERSION##git-}.tar.gz"

}

curl_build() {

if [ -n "$SSL_LIB" ]; then

SSL_LDFLAGS="-Wl,-rpath,${SSL_LIB}/lib"

SSL_OPT="--with-ssl=${SSL_LIB}"

fi

cd "${CURL_TMPDIR}"

mkdir -p "${CURL_TMPDIR}/curl-${CURL_VERSION}"

tar zxf "${CURL_TMPDIR}/curl-${CURL_VERSION}.tar.gz" -C "${CURL_TMPDIR}/curl-${CURL_VERSION}/" --strip-components=1

cd "${CURL_TMPDIR}/curl-${CURL_VERSION}"

autoreconf -fi

LDFLAGS=${SSL_LDFLAGS} ./configure "${SSL_OPT}" --prefix="${CURL_DESTDIR}" --enable-ech

make -j"$(nproc)"

make install

echo "${CURL_VERSION}" > "${CURL_DESTDIR}/.curl-version"

}

mkdir -p "${CURL_DESTDIR}"

mkdir -p "${CURL_TMPDIR}"

curl_download

curl_build