From d5fb85271804d5f45271a157d9c9c20de600db33 Mon Sep 17 00:00:00 2001
From: James Tucker <james@tailscale.com>
Date: Wed, 27 Jul 2022 14:38:39 -0700
Subject: [PATCH] build_dist.sh: add --box and --extra-small flag to produce
 smaller and boxed binaries

- `--box` when ./cmd/tailscaled is built with this flag, it builds a
  "toybox" style binary that includes tailscale and tailscaled.
- `--extra-small` strip the output binary and omit some dependencies
  (currently AWS integration).

Signed-off-by: James Tucker <james@tailscale.com>
---
 build_dist.sh | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/build_dist.sh b/build_dist.sh
index 1ba6ad3c0..0bf39e3cb 100755
--- a/build_dist.sh
+++ b/build_dist.sh
@@ -45,4 +45,25 @@ EOF
 	exit 0
 fi
 
-exec ./tool/go build -ldflags "-X tailscale.com/version.Long=${LONG} -X tailscale.com/version.Short=${SHORT} -X tailscale.com/version.GitCommit=${GIT_HASH}" "$@"
+tags=""
+ldflags="-X tailscale.com/version.Long=${LONG} -X tailscale.com/version.Short=${SHORT} -X tailscale.com/version.GitCommit=${GIT_HASH}"
+
+# build_dist.sh arguments must precede go build arguments.
+while [ "$#" -gt 1 ]; do
+	case "$1" in
+	--extra-small)
+		shift
+		ldflags="$ldflags -w -s"
+		tags="${tags:+$tags,}ts_omit_aws"
+		;;
+	--box)
+		shift
+		tags="${tags:+$tags,}ts_include_cli"
+		;;
+	*)
+		break
+		;;
+	esac
+done
+
+exec ./tool/go build ${tags:+-tags=$tags} -ldflags "$ldflags" "$@"