eclass/cargo.eclass

   1 # Copyright 1999-2016 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3 # $Id$
   4
   5 # @ECLASS: cargo.eclass
   6 # @MAINTAINER:
   7 # rust@gentoo.org
   8 # @AUTHOR:
   9 # Doug Goldstein <cardoe@gentoo.org>
  10 # @BLURB: common functions and variables for cargo builds
  11
  12 if [[ -z ${_CARGO_ECLASS} ]]; then
  13 _CARGO_ECLASS=1
  14
  15 case ${EAPI} in
  16         6) : ;;
  17         *) die "EAPI=${EAPI:-0} is not supported" ;;
  18 esac
  19
  20 EXPORT_FUNCTIONS src_unpack src_compile src_install
  21
  22 IUSE="${IUSE} debug"
  23
  24 [[ ${CATEGORY}/${PN} != dev-util/cargo ]] && DEPEND=">=dev-util/cargo-0.13.0"
  25
  26 ECARGO_HOME="${WORKDIR}/cargo_home"
  27 ECARGO_VENDOR="${ECARGO_HOME}/gentoo"
  28
  29 # @FUNCTION: cargo_crate_uris
  30 # @DESCRIPTION:
  31 # Generates the URIs to put in SRC_URI to help fetch dependencies.
  32 cargo_crate_uris() {
  33         for crate in $*; do
  34                 local name version url
  35                 name="${crate%-*}"
  36                 version="${crate##*-}"
  37                 url="https://crates.io/api/v1/crates/${name}/${version}/download -> ${crate}.crate"
  38                 echo $url
  39         done
  40 }
  41
  42 # @FUNCTION: cargo_src_unpack
  43 # @DESCRIPTION:
  44 # Unpacks the package and the cargo registry
  45 cargo_src_unpack() {
  46         debug-print-function ${FUNCNAME} "$@"
  47
  48         mkdir -p "${ECARGO_VENDOR}" || die
  49         mkdir -p "${S}" || die
  50
  51         local archive
  52         for archive in ${A}; do
  53                 case "${archive}" in
  54                         *.crate)
  55                                 ebegin "Loading ${archive} into Cargo registry"
  56                                 tar -xf "${DISTDIR}"/${archive} -C "${ECARGO_VENDOR}/" || die
  57                                 # generate sha256sum of the crate itself as cargo needs this
  58                                 shasum=$(sha256sum "${DISTDIR}"/${archive} | cut -d ' ' -f 1)
  59                                 pkg=$(basename ${archive} .crate)
  60                                 cat <<- EOF > ${ECARGO_VENDOR}/${pkg}/.cargo-checksum.json
  61                                 {
  62                                         "package": "${shasum}",
  63                                         "files": {}
  64                                 }
  65                                 EOF
  66                                 # if this is our target package we need it in ${WORKDIR} too
  67                                 # to make ${S} (and handle any revisions too)
  68                                 if [[ ${P} == ${pkg}* ]]; then
  69                                         tar -xf "${DISTDIR}"/${archive} -C "${WORKDIR}" || die
  70                                 fi
  71                                 eend $?
  72                                 ;;
  73                         cargo-snapshot*)
  74                                 ebegin "Unpacking ${archive}"
  75                                 mkdir -p "${S}"/target/snapshot
  76                                 tar -xzf "${DISTDIR}"/${archive} -C "${S}"/target/snapshot --strip-components 2 || die
  77                                 # cargo's makefile needs this otherwise it will try to
  78                                 # download it
  79                                 touch "${S}"/target/snapshot/bin/cargo || die
  80                                 eend $?
  81                                 ;;
  82                         *)
  83                                 unpack ${archive}
  84                                 ;;
  85                 esac
  86         done
  87
  88         cargo_gen_config
  89 }
  90
  91 # @FUNCTION: cargo_gen_config
  92 # @DESCRIPTION:
  93 # Generate the $CARGO_HOME/config necessary to use our local registry
  94 cargo_gen_config() {
  95         debug-print-function ${FUNCNAME} "$@"
  96
  97         cat <<- EOF > ${ECARGO_HOME}/config
  98         [source.gentoo]
  99         directory = "${ECARGO_VENDOR}"
 100
 101         [source.crates-io]
 102         replace-with = "gentoo"
 103         local-registry = "/nonexistant"
 104         EOF
 105 }
 106
 107 # @FUNCTION: cargo_src_compile
 108 # @DESCRIPTION:
 109 # Build the package using cargo build
 110 cargo_src_compile() {
 111         debug-print-function ${FUNCNAME} "$@"
 112
 113         export CARGO_HOME="${ECARGO_HOME}"
 114
 115         cargo build -v $(usex debug "" --release) \
 116                 || die "cargo build failed"
 117 }
 118
 119 # @FUNCTION: cargo_src_install
 120 # @DESCRIPTION:
 121 # Installs the binaries generated by cargo
 122 cargo_src_install() {
 123         debug-print-function ${FUNCNAME} "$@"
 124
 125         cargo install --root="${D}/usr" $(usex debug --debug "") \
 126                 || die "cargo install failed"
 127         rm -f "${D}/usr/.crates.toml"
 128 }
 129
 130 fi