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# Copyright 2019-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
LLVM_MAX_SLOT=13
inherit cmake llvm check-reqs
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}/${P}.tar.xz"
KEYWORDS="~amd64 ~arm ~arm64"
fi
LICENSE="MIT"
SLOT="0"
IUSE="test +threads"
RESTRICT="!test? ( test )"
PATCHES=("${FILESDIR}/${P}-fix-single-threaded.patch")
BUILD_DIR="${S}/build"
# According to zig's author, zig builds that do not support all targets are not
# supported by the upstream project.
ALL_LLVM_TARGETS=(
AArch64 AMDGPU ARM AVR 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[@]/%/(-)?}"
IUSE="test threads ${ALL_LLVM_TARGETS[*]}"
RDEPEND="
sys-devel/clang:${LLVM_MAX_SLOT}
>=sys-devel/lld-${LLVM_MAX_SLOT}
<sys-devel/lld-$((${LLVM_MAX_SLOT} + 1))
sys-devel/llvm:${LLVM_MAX_SLOT}[${LLVM_TARGET_USEDEPS// /,}]
"
DEPEND="${RDEPEND}"
llvm_check_deps() {
has_version "sys-devel/clang:${LLVM_SLOT}"
}
# see https://github.com/ziglang/zig/wiki/Troubleshooting-Build-Issues#high-memory-requirements
CHECKREQS_MEMORY="10G"
pkg_setup() {
llvm_pkg_setup
check-reqs_pkg_setup
}
src_configure() {
local mysedargs=() llvm_target arch
for target in "${ALL_LLVM_TARGETS[@]}"; do
if ! use $target; then
llvm_target=${target#llvm_targets_}
case $llvm_target in
AArch64) arch=(aarch64 aarch64_be aarch64_32);;
AMDGPU) arch=(amdgcn);;
ARM) arch=(thumb thumbeb arm armeb);;
AVR) arch=(avr);;
BPF) arch=(bpfel bpfeb);;
Hexagon) arch=(hexagon);;
Lanai) arch=(lanai);;
Mips) arch=(mips mipsel mips64 mips64el);;
MSP430) arch=(msp430);;
NVPTX) arch=(nvptx nvptx64);;
PowerPC) arch=(powerpc powerpcle powerpc64 powerpc64le);;
RISCV) arch=(riscv32 riscv64);;
Sparc) arch=(sparc sparcv9 sparcel);;
SystemZ) arch=(s390x);;
WebAssembly) arch=(wasm32 wasm64);;
X86) arch=(i386 x86_64);;
XCore) arch=(xcore);;
*) die "unhandled target"
esac
for a in ${arch[@]}; do
mysedargs+=(
-e "/^pub fn targetTriple(/,/^}/s/\.$a => .*/.$a => return error.@\"Zig compiled without LLVM $llvm_target\",/"
)
done
mysedargs+=(
-e "
/^fn initializeLLVMTarget(/,/^}/ {
/\.$a => {/,/},$/ {
s/=>.*/=> unreachable,/
/=>/!d
}
}
"
)
fi
done
sed -i "${mysedargs[@]}" src/codegen/llvm.zig || die
local mycmakeargs=(
-DZIG_USE_CCACHE=OFF
-DZIG_PREFER_CLANG_CPP_DYLIB=ON
-DZIG_SINGLE_THREADED="$(usex threads OFF ON)"
)
cmake_src_configure
}
src_test() {
cd "${BUILD_DIR}" || die
./zig build test || die
}
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