75 lines
1.5 KiB
Bash
Executable File
75 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo pipefail
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# usage: (from within another script)
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# shell="$(./bashbrew-arch-to-goenv.sh arm32v6)"
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# eval "$shell"
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# since we need those new environment variables set in our other script
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bashbrewArch="$1"; shift # "amd64", "arm32v5", "windows-amd64", etc.
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os="${bashbrewArch%%-*}"
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[ "$os" != "$bashbrewArch" ] || os='linux'
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arch="${bashbrewArch#${os}-}"
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declare -A envs=(
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# https://pkg.go.dev/cmd/go#hdr-Build_constraints
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# https://gist.github.com/asukakenji/f15ba7e588ac42795f421b48b8aede63
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[GOOS]="$os"
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[GOARCH]="$arch"
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# https://go.dev/wiki/MinimumRequirements#architectures
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[GO386]=
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[GOAMD64]=
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[GOARM64]=
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[GOARM]=
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[GOMIPS64]=
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[GOPPC64]=
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[GORISCV64]=
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)
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case "$arch" in
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amd64)
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envs[GOAMD64]='v1'
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;;
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arm32v*)
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envs[GOARCH]='arm'
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envs[GOARM]="${arch#arm32v}" # "6", "7", "8", etc
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;;
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arm64v*)
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envs[GOARCH]='arm64'
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version="${arch#arm64v}"
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if [ -z "${version%%[0-9]}" ]; then
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# if the version is just a raw number ("8", "9"), we should append ".0"
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# https://go-review.googlesource.com/c/go/+/559555/comment/e2049987_1bc3a065/
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# (Go has "v8.0" but no bare "v8")
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version+='.0'
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fi
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envs[GOARM64]="v$version" # "v8.0", "v9.0", etc
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;;
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i386)
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envs[GOARCH]='386'
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;;
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# TODO GOMIPS64?
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# TODO GOPPC64?
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# TODO GORISCV64?
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esac
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exports=
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unsets=
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for key in "${!envs[@]}"; do
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val="${envs[$key]}"
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if [ -n "$val" ]; then
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exports+=" $(printf '%s=%q' "$key" "$val")"
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else
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unsets+=" $key"
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fi
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done
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[ -z "$exports" ] || printf 'export%s\n' "$exports"
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[ -z "$unsets" ] || printf 'unset%s\n' "$unsets"
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