summaryrefslogtreecommitdiff
blob: 306dede9d39faf613f4f07ea903c5464fa7d3254 (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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

PYTHON_COMPAT=( python2_7 python3_{5,6,7} pypy )

inherit check-reqs estack flag-o-matic llvm multiprocessing multilib-build python-any-r1 rust-toolchain toolchain-funcs

if [[ ${PV} = *beta* ]]; then
	betaver=${PV//*beta}
	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
	MY_P="rustc-beta"
	SLOT="beta/${PV}"
	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz"
else
	ABI_VER="$(ver_cut 1-2)"
	SLOT="stable/${ABI_VER}"
	MY_P="rustc-${PV}"
	SRC="${MY_P}-src.tar.xz"
	KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
fi

RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"

DESCRIPTION="Systems programming language from Mozilla"
HOMEPAGE="https://www.rust-lang.org/"

SRC_URI="https://static.rust-lang.org/dist/${SRC} -> rustc-${PV}-src.tar.xz
	$(rust_all_arch_uris rust-${RUST_STAGE0_VERSION})"

ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
	NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore )
ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/?}

LICENSE="|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA"

IUSE="clippy cpu_flags_x86_sse2 debug doc libressl rls rustfmt system-llvm wasm ${ALL_LLVM_TARGETS[*]}"

# Please keep the LLVM dependency block separate. Since LLVM is slotted,
# we need to *really* make sure we're not pulling more than one slot
# simultaneously.

# How to use it:
# 1. List all the working slots (with min versions) in ||, newest first.
# 2. Update the := to specify *max* version, e.g. < 9.
# 3. Specify LLVM_MAX_SLOT, e.g. 8.
LLVM_DEPEND="
	|| (
		sys-devel/llvm:9[llvm_targets_WebAssembly?]
		wasm? ( =sys-devel/lld-9* )
	)
	<sys-devel/llvm-10:=
"
LLVM_MAX_SLOT=9

COMMON_DEPEND="
	sys-libs/zlib
	!libressl? ( dev-libs/openssl:0= )
	libressl? ( dev-libs/libressl:0= )
	net-libs/libssh2
	net-libs/http-parser:=
	net-misc/curl[ssl]
	system-llvm? (
		${LLVM_DEPEND}
	)
"

DEPEND="${COMMON_DEPEND}
	${PYTHON_DEPS}
	|| (
		>=sys-devel/gcc-4.7
		>=sys-devel/clang-3.5
	)
	dev-util/cmake
"

RDEPEND="${COMMON_DEPEND}
	>=app-eselect/eselect-rust-20190311
	!dev-util/cargo
	rustfmt? ( !dev-util/rustfmt )
"

REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
	wasm? ( llvm_targets_WebAssembly )
	x86? ( cpu_flags_x86_sse2 )
"
QA_FLAGS_IGNORED="usr/bin/* usr/lib*/${P}"

PATCHES=(
	"${FILESDIR}"/1.38.0-fix-custom-libdir.patch
	"${FILESDIR}"/1.38.0-fix-multiple-llvm-rebuilds.patch
	"${FILESDIR}"/1.36.0-libressl.patch
)

S="${WORKDIR}/${MY_P}-src"

toml_usex() {
	usex "$1" true false
}

pre_build_checks() {
	CHECKREQS_DISK_BUILD="9G"
	eshopts_push -s extglob
	if is-flagq '-g?(gdb)?([1-9])'; then
		CHECKREQS_DISK_BUILD="14G"
	fi
	eshopts_pop
	check-reqs_pkg_setup
}

pkg_pretend() {
	pre_build_checks
}

pkg_setup() {
	pre_build_checks
	python-any-r1_pkg_setup
	use system-llvm && llvm_pkg_setup
}

src_prepare() {
	local rust_stage0_root="${WORKDIR}"/rust-stage0

	local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi)"

	"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig --destdir="${rust_stage0_root}" --prefix=/ || die

	default
}

src_configure() {
	local rust_target="" rust_targets="" arch_cflags

	# Collect rust target names to compile standard libs for all ABIs.
	for v in $(multilib_get_enabled_abi_pairs); do
		rust_targets="${rust_targets},\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
	done
	if use wasm; then
		rust_targets="${rust_targets},\"wasm32-unknown-unknown\""
	fi
	rust_targets="${rust_targets#,}"

	local extended="true" tools="\"cargo\","
	if use clippy; then
		tools="\"clippy\",$tools"
	fi
	if use rls; then
		tools="\"rls\",\"analysis\",\"src\",$tools"
	fi
	if use rustfmt; then
		tools="\"rustfmt\",$tools"
	fi

	local rust_stage0_root="${WORKDIR}"/rust-stage0

	rust_target="$(rust_abi)"

	cat <<- EOF > "${S}"/config.toml
		[llvm]
		optimize = $(toml_usex !debug)
		release-debuginfo = $(toml_usex debug)
		assertions = $(toml_usex debug)
		targets = "${LLVM_TARGETS// /;}"
		experimental-targets = ""
		link-shared = $(toml_usex system-llvm)
		[build]
		build = "${rust_target}"
		host = ["${rust_target}"]
		target = [${rust_targets}]
		cargo = "${rust_stage0_root}/bin/cargo"
		rustc = "${rust_stage0_root}/bin/rustc"
		docs = $(toml_usex doc)
		submodules = false
		python = "${EPYTHON}"
		locked-deps = true
		vendor = true
		extended = ${extended}
		tools = [${tools}]
		verbose = 2
		[install]
		prefix = "${EPREFIX}/usr"
		libdir = "$(get_libdir)/${P}"
		docdir = "share/doc/${P}"
		mandir = "share/${P}/man"
		[rust]
		optimize = $(toml_usex !debug)
		debug = $(toml_usex debug)
		debug-assertions = $(toml_usex debug)
		default-linker = "$(tc-getCC)"
		channel = "stable"
		rpath = false
		lld = $(usex system-llvm false $(toml_usex wasm))
	EOF

	for v in $(multilib_get_enabled_abi_pairs); do
		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
		arch_cflags="$(get_abi_CFLAGS ${v##*.})"

		cat <<- EOF >> "${S}"/config.env
			CFLAGS_${rust_target}=${arch_cflags}
		EOF

		cat <<- EOF >> "${S}"/config.toml
			[target.${rust_target}]
			cc = "$(tc-getBUILD_CC)"
			cxx = "$(tc-getBUILD_CXX)"
			linker = "$(tc-getCC)"
			ar = "$(tc-getAR)"
		EOF
		if use system-llvm; then
			cat <<- EOF >> "${S}"/config.toml
				llvm-config = "$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
			EOF
		fi
	done

	if use wasm; then
		cat <<- EOF >> "${S}"/config.toml
			[target.wasm32-unknown-unknown]
			linker = "$(usex system-llvm lld rust-lld)"
		EOF
	fi
}

src_compile() {
	env $(cat "${S}"/config.env)\
		"${EPYTHON}" ./x.py build -vv --config="${S}"/config.toml -j$(makeopts_jobs) \
		--exclude src/tools/miri || die # https://github.com/rust-lang/rust/issues/52305
}

src_install() {
	local rust_target abi_libdir

	env DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml \
	--exclude src/tools/miri || die

	mv "${ED}/usr/bin/rustc" "${ED}/usr/bin/rustc-${PV}" || die
	mv "${ED}/usr/bin/rustdoc" "${ED}/usr/bin/rustdoc-${PV}" || die
	mv "${ED}/usr/bin/rust-gdb" "${ED}/usr/bin/rust-gdb-${PV}" || die
	mv "${ED}/usr/bin/rust-gdbgui" "${ED}/usr/bin/rust-gdbgui-${PV}" || die
	mv "${ED}/usr/bin/rust-lldb" "${ED}/usr/bin/rust-lldb-${PV}" || die
	mv "${ED}/usr/bin/cargo" "${ED}/usr/bin/cargo-${PV}" || die
	if use clippy; then
		mv "${ED}/usr/bin/clippy-driver" "${ED}/usr/bin/clippy-driver-${PV}" || die
		mv "${ED}/usr/bin/cargo-clippy" "${ED}/usr/bin/cargo-clippy-${PV}" || die
	fi
	if use rls; then
		mv "${ED}/usr/bin/rls" "${ED}/usr/bin/rls-${PV}" || die
	fi
	if use rustfmt; then
		mv "${ED}/usr/bin/rustfmt" "${ED}/usr/bin/rustfmt-${PV}" || die
		mv "${ED}/usr/bin/cargo-fmt" "${ED}/usr/bin/cargo-fmt-${PV}" || die
	fi

	# Copy shared library versions of standard libraries for all targets
	# into the system's abi-dependent lib directories because the rust
	# installer only does so for the native ABI.
	for v in $(multilib_get_enabled_abi_pairs); do
		if [ ${v##*.} = ${DEFAULT_ABI} ]; then
			continue
		fi
		abi_libdir=$(get_abi_LIBDIR ${v##*.})
		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
		mkdir -p "${ED}/usr/${abi_libdir}/${P}"
		cp "${ED}/usr/$(get_libdir)/${P}/rustlib/${rust_target}/lib"/*.so \
		   "${ED}/usr/${abi_libdir}/${P}" || die
	done

	dodoc COPYRIGHT

	# FIXME:
	# Really not sure if that env is needed, specailly LDPATH
	cat <<-EOF > "${T}"/50${P}
		LDPATH="${EPREFIX}/usr/$(get_libdir)/${P}"
		MANPATH="${EPREFIX}/usr/share/${P}/man"
	EOF
	doenvd "${T}"/50${P}

	# note: eselect-rust adds EROOT to all paths below
	cat <<-EOF > "${T}/provider-${P}"
		/usr/bin/rustdoc
		/usr/bin/rust-gdb
		/usr/bin/rust-gdbgui
		/usr/bin/rust-lldb
	EOF
	echo /usr/bin/cargo >> "${T}/provider-${P}"
	if use clippy; then
		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
	fi
	if use rls; then
		echo /usr/bin/rls >> "${T}/provider-${P}"
	fi
	if use rustfmt; then
		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
	fi
	dodir /etc/env.d/rust
	insinto /etc/env.d/rust
	doins "${T}/provider-${P}"
}

pkg_postinst() {
	eselect rust update --if-unset

	elog "Rust installs a helper script for calling GDB and LLDB,"
	elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."

	ewarn "cargo is now installed from dev-lang/rust{,-bin} instead of dev-util/cargo."
	ewarn "This might have resulted in a dangling symlink for /usr/bin/cargo on some"
	ewarn "systems. This can be resolved by calling 'sudo eselect rust set ${P}'."

	if has_version app-editors/emacs || has_version app-editors/emacs-vcs; then
		elog "install app-emacs/rust-mode to get emacs support for rust."
	fi

	if has_version app-editors/gvim || has_version app-editors/vim; then
		elog "install app-vim/rust-vim to get vim support for rust."
	fi
}

pkg_postrm() {
	eselect rust cleanup
}