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# shellcheck shell=bash disable=SC2154,SC2086
# This readonly zigDefaultBuildFlagsArray below is meant to avoid CPU feature
# impurity in Nixpkgs. However, this flagset is "unstable": it is specifically
# meant to be controlled by the upstream development team - being up to that
# team exposing or not that flags to the outside (especially the package manager
# teams).
# Because of this hurdle, @andrewrk from Zig Software Foundation proposed some
# solutions for this issue. Hopefully they will be implemented in future
# releases of Zig. When this happens, this flagset should be revisited
# accordingly.
# Below are some useful links describing the discovery process of this 'bug' in
# Nixpkgs:
# https://github.com/NixOS/nixpkgs/issues/169461
# https://github.com/NixOS/nixpkgs/issues/185644
# https://github.com/NixOS/nixpkgs/pull/197046
# https://github.com/NixOS/nixpkgs/pull/241741#issuecomment-1624227485
# https://github.com/ziglang/zig/issues/14281#issuecomment-1624220653
readonly zigDefaultFlagsArray=(@zig_default_flags@)
function zigSetGlobalCacheDir {
ZIG_GLOBAL_CACHE_DIR=$(mktemp -d)
export ZIG_GLOBAL_CACHE_DIR
}
function zigBuildPhase {
runHook preBuild
local flagsArray=(
"${zigDefaultFlagsArray[@]}"
$zigBuildFlags "${zigBuildFlagsArray[@]}"
)
echoCmd 'build flags' "${flagsArray[@]}"
zig build "${flagsArray[@]}"
runHook postBuild
}
function zigCheckPhase {
runHook preCheck
local flagsArray=(
"${zigDefaultFlagsArray[@]}"
$zigCheckFlags "${zigCheckFlagsArray[@]}"
)
echoCmd 'check flags' "${flagsArray[@]}"
zig build test "${flagsArray[@]}"
runHook postCheck
}
function zigInstallPhase {
runHook preInstall
local flagsArray=(
"${zigDefaultFlagsArray[@]}"
$zigBuildFlags "${zigBuildFlagsArray[@]}"
$zigInstallFlags "${zigInstallFlagsArray[@]}"
)
if [ -z "${dontAddPrefix-}" ]; then
# Zig does not recognize `--prefix=/dir/`, only `--prefix /dir/`
flagsArray+=("${prefixKey:---prefix}" "$prefix")
fi
echoCmd 'install flags' "${flagsArray[@]}"
zig build install "${flagsArray[@]}"
runHook postInstall
}
addEnvHooks "$targetOffset" zigSetGlobalCacheDir
if [ -z "${dontUseZigBuild-}" ] && [ -z "${buildPhase-}" ]; then
buildPhase=zigBuildPhase
fi
if [ -z "${dontUseZigCheck-}" ] && [ -z "${checkPhase-}" ]; then
checkPhase=zigCheckPhase
fi
if [ -z "${dontUseZigInstall-}" ] && [ -z "${installPhase-}" ]; then
installPhase=zigInstallPhase
fi
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