eclass/cargo.eclass

   1 # Copyright 1999-2016 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3
   4 # @ECLASS: cargo.eclass
   5 # @MAINTAINER:
   6 # rust@gentoo.org
   7 # @AUTHOR:
   8 # Doug Goldstein <cardoe@gentoo.org>
   9 # @BLURB: common functions and variables for cargo builds
  10
  11 if [[ -z ${_CARGO_ECLASS} ]]; then
  12 _CARGO_ECLASS=1
  13
  14 case ${EAPI} in
  15         6) : ;;
  16         *) die "EAPI=${EAPI:-0} is not supported" ;;
  17 esac
  18
  19 EXPORT_FUNCTIONS src_unpack src_compile src_install
  20
  21 IUSE="${IUSE} debug"
  22
  23 [[ ${CATEGORY}/${PN} != dev-util/cargo ]] && DEPEND=">=dev-util/cargo-0.13.0"
  24
  25 ECARGO_HOME="${WORKDIR}/cargo_home"
  26 ECARGO_VENDOR="${ECARGO_HOME}/gentoo"
  27
  28 # @FUNCTION: cargo_crate_uris
  29 # @DESCRIPTION:
  30 # Generates the URIs to put in SRC_URI to help fetch dependencies.
  31 cargo_crate_uris() {
  32         local crate
  33         for crate in "$@"; do
  34                 local name version url pretag
  35                 name="${crate%-*}"
  36                 version="${crate##*-}"
  37                 pretag="[a-zA-Z]+"
  38                 if [[ $version =~ $pretag ]]; then
  39                         version="${name##*-}-${version}"
  40                         name="${name%-*}"
  41                 fi
  42                 url="https://crates.io/api/v1/crates/${name}/${version}/download -> ${crate}.crate"
  43                 echo "${url}"
  44         done
  45 }
  46
  47 # @FUNCTION: cargo_src_unpack
  48 # @DESCRIPTION:
  49 # Unpacks the package and the cargo registry
  50 cargo_src_unpack() {
  51         debug-print-function ${FUNCNAME} "$@"
  52
  53         mkdir -p "${ECARGO_VENDOR}" || die
  54         mkdir -p "${S}" || die
  55
  56         local archive shasum pkg
  57         for archive in ${A}; do
  58                 case "${archive}" in
  59                         *.crate)
  60                                 ebegin "Loading ${archive} into Cargo registry"
  61                                 tar -xf "${DISTDIR}"/${archive} -C "${ECARGO_VENDOR}/" || die
  62                                 # generate sha256sum of the crate itself as cargo needs this
  63                                 shasum=$(sha256sum "${DISTDIR}"/${archive} | cut -d ' ' -f 1)
  64                                 pkg=$(basename ${archive} .crate)
  65                                 cat <<- EOF > ${ECARGO_VENDOR}/${pkg}/.cargo-checksum.json
  66                                 {
  67                                         "package": "${shasum}",
  68                                         "files": {}
  69                                 }
  70                                 EOF
  71                                 # if this is our target package we need it in ${WORKDIR} too
  72                                 # to make ${S} (and handle any revisions too)
  73                                 if [[ ${P} == ${pkg}* ]]; then
  74                                         tar -xf "${DISTDIR}"/${archive} -C "${WORKDIR}" || die
  75                                 fi
  76                                 eend $?
  77                                 ;;
  78                         cargo-snapshot*)
  79                                 ebegin "Unpacking ${archive}"
  80                                 mkdir -p "${S}"/target/snapshot
  81                                 tar -xzf "${DISTDIR}"/${archive} -C "${S}"/target/snapshot --strip-components 2 || die
  82                                 # cargo's makefile needs this otherwise it will try to
  83                                 # download it
  84                                 touch "${S}"/target/snapshot/bin/cargo || die
  85                                 eend $?
  86                                 ;;
  87                         *)
  88                                 unpack ${archive}
  89                                 ;;
  90                 esac
  91         done
  92
  93         cargo_gen_config
  94 }
  95
  96 # @FUNCTION: cargo_gen_config
  97 # @DESCRIPTION:
  98 # Generate the $CARGO_HOME/config necessary to use our local registry
  99 cargo_gen_config() {
 100         debug-print-function ${FUNCNAME} "$@"
 101
 102         cat <<- EOF > "${ECARGO_HOME}/config"
 103         [source.gentoo]
 104         directory = "${ECARGO_VENDOR}"
 105
 106         [source.crates-io]
 107         replace-with = "gentoo"
 108         local-registry = "/nonexistant"
 109         EOF
 110 }
 111
 112 # @FUNCTION: cargo_src_compile
 113 # @DESCRIPTION:
 114 # Build the package using cargo build
 115 cargo_src_compile() {
 116         debug-print-function ${FUNCNAME} "$@"
 117
 118         export CARGO_HOME="${ECARGO_HOME}"
 119
 120         cargo build -v $(usex debug "" --release) \
 121                 || die "cargo build failed"
 122 }
 123
 124 # @FUNCTION: cargo_src_install
 125 # @DESCRIPTION:
 126 # Installs the binaries generated by cargo
 127 cargo_src_install() {
 128         debug-print-function ${FUNCNAME} "$@"
 129
 130         cargo install --root="${D}/usr" $(usex debug --debug "") \
 131                 || die "cargo install failed"
 132         rm -f "${D}/usr/.crates.toml"
 133
 134         [ -d "${S}/man" ] && doman "${S}/man" || return 0
 135 }
 136
 137 fi