summaryrefslogtreecommitdiff
blob: dae18a866bdd8e3edc4a29e589dabe28ecaf2673 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
# Copyright 1999-2016 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>
# @BLURB: common functions and variables for cargo builds

if [[ -z ${_CARGO_ECLASS} ]]; then
_CARGO_ECLASS=1

case ${EAPI} in
	6) : ;;
	*) die "EAPI=${EAPI:-0} is not supported" ;;
esac

EXPORT_FUNCTIONS src_unpack src_compile src_install

IUSE="${IUSE} debug"

[[ ${CATEGORY}/${PN} != dev-util/cargo ]] && DEPEND=">=dev-util/cargo-0.13.0"

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() {
	for crate in $*; do
		local name version url
		name="${crate%-*}"
		version="${crate##*-}"
		url="https://crates.io/api/v1/crates/${name}/${version}/download -> ${crate}.crate"
		echo $url
	done
}

# @FUNCTION: cargo_src_unpack
# @DESCRIPTION:
# Unpacks the package and the cargo registry
cargo_src_unpack() {
	debug-print-function ${FUNCNAME} "$@"

	mkdir -p "${ECARGO_VENDOR}" || die
	mkdir -p "${S}" || die

	local archive
	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 $(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 --root="${D}/usr" $(usex debug --debug "") \
		|| die "cargo install failed"
	rm -f "${D}/usr/.crates.toml"

	[ -d "${S}/man" ] && doman "${S}/man"
}

fi