mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-29 13:05:46 +00:00
afe19d1d81
The use of GOOS to mean "the compiler's host architecture" ends up overriding whatever GOOS the user passed in, resulting in befuddling errors like "unsupported GOOS/GOARCH pair linux/wasm" when the caller requests js/wasm. Signed-off-by: David Anderson <danderson@tailscale.com>
84 lines
2.3 KiB
Bash
Executable File
84 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# This script acts like the "go" command, but uses Tailscale's
|
|
# currently-desired version from https://github.com/tailscale/go,
|
|
# downloading it first if necessary.
|
|
|
|
set -eu
|
|
|
|
log() {
|
|
echo "$@" >&2
|
|
}
|
|
|
|
DEFAULT_TOOLCHAIN_DIR="${HOME}/.cache/tailscale-go"
|
|
TOOLCHAIN="${TOOLCHAIN-${DEFAULT_TOOLCHAIN_DIR}}"
|
|
TOOLCHAIN_GO="${TOOLCHAIN}/bin/go"
|
|
read -r REV < "$(dirname "$0")/../go.toolchain.rev"
|
|
|
|
# Fast, quiet path, when Tailscale is already current.
|
|
if [ -e "${TOOLCHAIN_GO}" ]; then
|
|
short_hash=$("${TOOLCHAIN_GO}" version | sed 's/.*-ts//; s/ .*//')
|
|
case $REV in
|
|
"$short_hash"*)
|
|
unset GOROOT
|
|
exec "${TOOLCHAIN_GO}" "$@"
|
|
esac
|
|
fi
|
|
|
|
# This works for linux and darwin, which is sufficient
|
|
# (we do not build tailscale-go for other targets).
|
|
host_os=$(uname -s | tr A-Z a-z)
|
|
host_arch="$(uname -m)"
|
|
if [ "$host_arch" = "aarch64" ]; then
|
|
# Go uses the name "arm64".
|
|
host_arch="arm64"
|
|
elif [ "$host_arch" = "x86_64" ]; then
|
|
# Go uses the name "amd64".
|
|
host_arch="amd64"
|
|
fi
|
|
|
|
get_cached() {
|
|
if [ ! -d "$TOOLCHAIN" ]; then
|
|
mkdir -p "$TOOLCHAIN"
|
|
fi
|
|
|
|
archive="$TOOLCHAIN-$REV.tar.gz"
|
|
mark="$TOOLCHAIN.extracted"
|
|
extracted=
|
|
|
|
# Ignore the error from read, which may error if the mark file does not contain a line end.
|
|
read -r extracted < "$mark" || true
|
|
|
|
if [ "$extracted" = "$REV" ] && [ -e "${TOOLCHAIN_GO}" ]; then
|
|
# already ok
|
|
log "Go toolchain '$REV' already extracted."
|
|
return 0
|
|
fi
|
|
|
|
rm -f "$archive.new" "$TOOLCHAIN.extracted"
|
|
if [ ! -e "$archive" ]; then
|
|
log "Need to download go '$REV'."
|
|
curl -f -L -o "$archive.new" "https://github.com/tailscale/go/releases/download/build-${REV}/${host_os}-${host_arch}.tar.gz"
|
|
rm -f "$archive"
|
|
mv "$archive.new" "$archive"
|
|
fi
|
|
|
|
log "Extracting tailscale/go rev '$REV'" >&2
|
|
log " into '$TOOLCHAIN'." >&2
|
|
rm -rf "$TOOLCHAIN"
|
|
mkdir -p "$TOOLCHAIN"
|
|
(cd "$TOOLCHAIN" && tar --strip-components=1 -xf "$archive")
|
|
echo "$REV" >$mark
|
|
}
|
|
|
|
if [ "${REV}" = "SKIP" ] ||
|
|
[ "${host_os}" != "darwin" -a "${host_os}" != "linux" ] ||
|
|
[ "${host_arch}" != "amd64" -a "${host_arch}" != "arm64" ]; then
|
|
# Use whichever go is available
|
|
exec go "$@"
|
|
else
|
|
get_cached
|
|
fi
|
|
|
|
unset GOROOT
|
|
exec "${TOOLCHAIN_GO}" "$@" |