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# Copyright 1999-2020 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: cargo.eclass
# @MAINTAINER:
# rust@gentoo.org
# @AUTHOR:
# Doug Goldstein <cardoe@gentoo.org>
# @SUPPORTED_EAPIS: 5 6 7
# @BLURB: common functions and variables for cargo builds
if [[ -z ${_CARGO_ECLASS} ]]; then
_CARGO_ECLASS=1
CARGO_DEPEND=""
[[ ${CATEGORY}/${PN} != dev-lang/rust ]] && CARGO_DEPEND="virtual/rust"
: ${CARGO_FETCH_CRATES:=not}
case ${EAPI} in
5|6) : DEPEND="${DEPEND} ${CARGO_DEPEND}";;
7) : BDEPEND="${BDEPEND} ${CARGO_DEPEND}";;
*) die "${ECLASS}: EAPI=${EAPI:-0} is not supported" ;;
esac
inherit multiprocessing
EXPORT_FUNCTIONS src_unpack src_compile src_install
IUSE="${IUSE} debug"
ECARGO_HOME="${WORKDIR}/cargo_home"
ECARGO_VENDOR="${ECARGO_HOME}/gentoo"
# @FUNCTION: cargo_crate_uris
# @DESCRIPTION:
# Generates the URIs to put in SRC_URI to help fetch dependencies.
cargo_crate_uris() {
local crate
for crate in "$@"; do
local name version url pretag
name="${crate%-*}"
version="${crate##*-}"
pretag="[a-zA-Z]+"
if [[ $version =~ $pretag ]]; then
version="${name##*-}-${version}"
name="${name%-*}"
fi
if [[ "${CARGO_FETCH_CRATES}" == "not" ]]; then
url="https://crates.io/api/v1/crates/${name}/${version}/download -> ${crate}.crate"
else
url=""
fi
echo "${url}"
done
}
# @FUNCTION: cargo_src_unpack
# @DESCRIPTION:
# Unpacks the package and the cargo registry
cargo_src_unpack() {
debug-print-function ${FUNCNAME} "$@"
if [[ "${CARGO_FETCH_CRATES}" == "yes" ]]; then
# Cache crates in persistent store
# Do no redownload them at every compilation
ECARGO_HOME="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/cargo-src"
ECARGO_VENDOR="${ECARGO_HOME}/gentoo"
addwrite "${ECARGO_HOME}"
fi
mkdir -p "${ECARGO_VENDOR}" || die
mkdir -p "${S}" || die
if [[ "${CARGO_FETCH_CRATES}" == "yes" ]]; then
default
ewarn "Crates will be fetched from crates.io."
return
fi
local archive shasum pkg
for archive in ${A}; do
case "${archive}" in
*.crate)
ebegin "Loading ${archive} into Cargo registry"
tar -xf "${DISTDIR}"/${archive} -C "${ECARGO_VENDOR}/" || die
# generate sha256sum of the crate itself as cargo needs this
shasum=$(sha256sum "${DISTDIR}"/${archive} | cut -d ' ' -f 1)
pkg=$(basename ${archive} .crate)
cat <<- EOF > ${ECARGO_VENDOR}/${pkg}/.cargo-checksum.json
{
"package": "${shasum}",
"files": {}
}
EOF
# if this is our target package we need it in ${WORKDIR} too
# to make ${S} (and handle any revisions too)
if [[ ${P} == ${pkg}* ]]; then
tar -xf "${DISTDIR}"/${archive} -C "${WORKDIR}" || die
fi
eend $?
;;
cargo-snapshot*)
ebegin "Unpacking ${archive}"
mkdir -p "${S}"/target/snapshot
tar -xzf "${DISTDIR}"/${archive} -C "${S}"/target/snapshot --strip-components 2 || die
# cargo's makefile needs this otherwise it will try to
# download it
touch "${S}"/target/snapshot/bin/cargo || die
eend $?
;;
*)
unpack ${archive}
;;
esac
done
cargo_gen_config
}
# @FUNCTION: cargo_gen_config
# @DESCRIPTION:
# Generate the $CARGO_HOME/config necessary to use our local registry
cargo_gen_config() {
debug-print-function ${FUNCNAME} "$@"
cat <<- EOF > "${ECARGO_HOME}/config"
[source.gentoo]
directory = "${ECARGO_VENDOR}"
[source.crates-io]
replace-with = "gentoo"
local-registry = "/nonexistant"
EOF
}
# @FUNCTION: cargo_src_compile
# @DESCRIPTION:
# Build the package using cargo build
cargo_src_compile() {
debug-print-function ${FUNCNAME} "$@"
export CARGO_HOME="${ECARGO_HOME}"
cargo build -v -j $(makeopts_jobs) $(usex debug "" --release) \
|| die "cargo build failed"
}
# @FUNCTION: cargo_src_install
# @DESCRIPTION:
# Installs the binaries generated by cargo
cargo_src_install() {
debug-print-function ${FUNCNAME} "$@"
cargo install -j $(makeopts_jobs) --root="${D}/usr" $(usex debug --debug "") "$@" \
|| die "cargo install failed"
rm -f "${D}/usr/.crates.toml"
[ -d "${S}/man" ] && doman "${S}/man" || return 0
}
fi
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