mirror of
https://github.com/tailscale/tailscale.git
synced 2026-10-09 20:01:54 -04:00
Brad Fitzpatrick
fe91043315
Contining the trend of making everything be optional that could possibly be optional, this makes the magicsock UDP underlay transport be optional. (mostly replacing a bunch of GOOS != "js" checks in the process) Omitting udptransport (ts_omit_udptransport) makes magicsock DERP-only: no UDP sockets, no advertised endpoints, and netcheck measures DERP latency over HTTPS. Omitting only nattraversal keeps disco ping/pong to peers' advertised endpoints but drops STUN, call-me-maybe, the peer relay client, the endpoint tracker, and UDP lifetime probing. Both are plain linker dead-code elimination via buildfeatures constants. (as oppposed to moving the code all over into feature packages and indirecting through hooks) The minimal linux/amd64 tailscaled shrinks by 258 KB without nattraversal and 561 KB without both. Updates #12614 Change-Id: Ife10804b48a168d9481e4321c18ed8fc85fa71f1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
76 lines
2.0 KiB
Bash
Executable File
76 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env sh
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#
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# Runs `go build` with flags configured for binary distribution. All
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# it does differently from `go build` is burn git commit and version
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# information into the binaries, so that we can track down user
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# issues.
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#
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# If you're packaging Tailscale for a distro, please consider using
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# this script, or executing equivalent commands in your
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# distro-specific build system.
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set -eu
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go="go"
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if [ -n "${TS_USE_TOOLCHAIN:-}" ]; then
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go="./tool/go"
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fi
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eval `CGO_ENABLED=0 GOOS=$($go env GOHOSTOS) GOARCH=$($go env GOHOSTARCH) $go run ./cmd/mkversion`
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if [ "$#" -ge 1 ] && [ "$1" = "shellvars" ]; then
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cat <<EOF
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VERSION_MINOR="$VERSION_MINOR"
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VERSION_SHORT="$VERSION_SHORT"
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VERSION_LONG="$VERSION_LONG"
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VERSION_GIT_HASH="$VERSION_GIT_HASH"
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EOF
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exit 0
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fi
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tags="${TAGS:-}"
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ldflags="-X tailscale.com/version.longStamp=${VERSION_LONG} -X tailscale.com/version.shortStamp=${VERSION_SHORT}"
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# build_dist.sh arguments must precede go build arguments.
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while [ "$#" -gt 1 ]; do
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case "$1" in
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--extra-small)
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if [ ! -z "${TAGS:-}" ]; then
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echo "set either --extra-small or \$TAGS, but not both"
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exit 1
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fi
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shift
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ldflags="$ldflags -w -s"
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tags="${tags:+$tags,},$(GOOS= GOARCH= $go run ./cmd/featuretags --min --add=osrouter,nattraversal)"
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;;
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--min)
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# --min is like --extra-small but even smaller, removing all features,
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# even if it results in a useless binary (e.g. removing both netstack +
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# osrouter). It exists for benchmarking purposes only.
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shift
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ldflags="$ldflags -w -s"
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tags="${tags:+$tags,},$(GOOS= GOARCH= $go run ./cmd/featuretags --min)"
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;;
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--strip)
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# --min overrides your flags, when you're using custom tags and want to
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# additionally strip symbols to help reduce the size, this is the easiest
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# way to do it.
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shift
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ldflags="$ldflags -w -s"
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;;
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--box)
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if [ ! -z "${TAGS:-}" ]; then
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echo "set either --box or \$TAGS, but not both"
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exit 1
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fi
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shift
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tags="${tags:+$tags,}ts_include_cli"
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;;
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*)
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break
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;;
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esac
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done
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exec $go build ${tags:+-tags=$tags} -trimpath -ldflags "$ldflags" "$@"
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