summaryrefslogtreecommitdiff
blob: 2346feadd70a78352c7d553d2a01fc1e10ee5f5d (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
# Copyright 2019-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

LLVM_MAX_SLOT=16
inherit edo cmake llvm check-reqs toolchain-funcs

DESCRIPTION="A robust, optimal, and maintainable programming language"
HOMEPAGE="https://ziglang.org/"
if [[ ${PV} == 9999 ]]; then
	EGIT_REPO_URI="https://github.com/ziglang/zig.git"
	inherit git-r3
else
	SRC_URI="https://ziglang.org/download/${PV}/${P}.tar.xz"
	KEYWORDS="~amd64 ~arm ~arm64"
fi

# project itself: MIT
# There are bunch of projects under "lib/" folder that are needed for cross-compilation.
# Files that are unnecessary for cross-compilation are removed by upstream
# and therefore their licenses (if any special) are not included.
# lib/libunwind: Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )
# lib/libcxxabi: Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )
# lib/libcxx: Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )
# lib/libc/wasi: || ( Apache-2.0-with-LLVM-exceptions Apache-2.0 MIT BSD-2 ) public-domain
# lib/libc/musl: MIT BSD-2
# lib/libc/mingw: ZPL public-domain BSD-2 ISC HPND
# lib/libc/glibc: BSD HPND ISC inner-net LGPL-2.1+
LICENSE="MIT Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT ) || ( Apache-2.0-with-LLVM-exceptions Apache-2.0 MIT BSD-2 ) public-domain BSD-2 ZPL ISC HPND BSD inner-net LGPL-2.1+"
SLOT="$(ver_cut 1-2)"
IUSE="doc"

BUILD_DIR="${S}/build"

# Zig requires zstd and zlib compression support in LLVM, if using LLVM backend.
# (non-LLVM backends don't require these)
# They are not required "on their own", so please don't add them here.
# You can check https://github.com/ziglang/zig-bootstrap in future, to see
# options that are passed to LLVM CMake building (excluding "static" ofc).
DEPEND="
	sys-devel/clang:${LLVM_MAX_SLOT}=
	sys-devel/lld:${LLVM_MAX_SLOT}=
	sys-devel/llvm:${LLVM_MAX_SLOT}=[zstd]
"

RDEPEND="
	${DEPEND}
"

IDEPEND="app-eselect/eselect-zig"

# see https://github.com/ziglang/zig/issues/3382
# For now, Zig Build System doesn't support enviromental CFLAGS/LDFLAGS/etc.
QA_FLAGS_IGNORED="usr/.*/zig/${PV}/bin/zig"

# Since commit https://github.com/ziglang/zig/commit/e7d28344fa3ee81d6ad7ca5ce1f83d50d8502118
# Zig uses self-hosted compiler only
CHECKREQS_MEMORY="4G"

llvm_check_deps() {
	has_version "sys-devel/clang:${LLVM_SLOT}"
}

ctarget_to_zigtarget() {
	# Zig's Target Format: arch-os-abi
	local CTARGET="${CTARGET:-${CHOST}}"

	local ZIG_ARCH
	case "${CTARGET%%-*}" in
		i?86)		ZIG_ARCH=x86;;
		sparcv9)	ZIG_ARCH=sparc64;;
		*)		ZIG_ARCH="${CTARGET%%-*}";; # Same as in CHOST
	esac

	local ZIG_OS
	case "${CTARGET}" in
		*linux*)	ZIG_OS=linux;;
		*apple*)	ZIG_OS=macos;;
	esac

	local ZIG_ABI
	case "${CTARGET##*-}" in
		gnu)		ZIG_ABI=gnu;;
		solaris*)	ZIG_OS=solaris ZIG_ABI=none;;
		darwin*)	ZIG_ABI=none;;
		*)		ZIG_ABI="${CTARGET##*-}";; # Same as in CHOST
	esac

	echo "${ZIG_ARCH}-${ZIG_OS}-${ZIG_ABI}"
}

get_zig_mcpu() {
	local ZIG_DEFAULT_MCPU=native
	tc-is-cross-compiler && ZIG_DEFAULT_MCPU=baseline
	echo "${ZIG_MCPU:-${ZIG_DEFAULT_MCPU}}"
}

get_zig_target() {
	local ZIG_DEFAULT_TARGET=native
	tc-is-cross-compiler && ZIG_DEFAULT_TARGET="$(ctarget_to_zigtarget)"
	echo "${ZIG_TARGET:-${ZIG_DEFAULT_TARGET}}"
}

pkg_setup() {
	llvm_pkg_setup
	check-reqs_pkg_setup
}

src_configure() {
	local mycmakeargs=(
		-DZIG_USE_CCACHE=OFF
		-DZIG_SHARED_LLVM=ON
		-DZIG_TARGET_TRIPLE="$(get_zig_target)"
		-DZIG_TARGET_MCPU="$(get_zig_mcpu)"
		-DZIG_USE_LLVM_CONFIG=ON
		-DCMAKE_PREFIX_PATH="$(get_llvm_prefix ${LLVM_MAX_SLOT})"
		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/$(get_libdir)/zig/${PV}"
	)

	cmake_src_configure
}

src_compile() {
	cmake_src_compile

	if use doc; then
		cd "${BUILD_DIR}" || die
		edo ./zig2 run ../doc/docgen.zig -- --zig ./zig2 ../doc/langref.html.in "${S}/langref.html"
		edo ./zig2 test ../lib/std/std.zig --zig-lib-dir ../lib -fno-emit-bin -femit-docs="${S}/std"
	fi
}

src_test() {
	cd "${BUILD_DIR}" || die
	local ZIG_TEST_ARGS="-Dstatic-llvm=false -Denable-llvm -Dskip-non-native \
		-Drelease -Dtarget=$(get_zig_target) -Dcpu=$(get_zig_mcpu)"
	# TBF zig2 -> stage3/bin/zig when (if) https://github.com/ziglang/zig/pull/14255 will be merged
	edo ./zig2 build test ${ZIG_TEST_ARGS}
}

src_install() {
	use doc && local HTML_DOCS=( "langref.html" "std" )
	cmake_src_install

	cd "${ED}/usr/$(get_libdir)/zig/${PV}/" || die
	mv lib/zig/ lib2/ || die
	rm -rf lib/ || die
	mv lib2/ lib/ || die
	dosym -r "/usr/$(get_libdir)/zig/${PV}/bin/zig" "/usr/bin/zig-${PV}"
}

pkg_postinst() {
	eselect zig update ifunset
}

pkg_postrm() {
	eselect zig update ifunset
}