build-macos.sh

#!/usr/bin/env bash
#
# Build TetherSSH natively on macOS (run this ON a Mac).
#
# Place this at the repo root (same directory as go.mod and the cli/ folder).
# Run:   ./build-macos.sh             # build for the host arch (arm64 or amd64)
#        ./build-macos.sh universal   # fat binary: arm64 + amd64 via lipo
#        ./build-macos.sh amd64        # force one arch
#        STRIP=0 ./build-macos.sh      # keep symbols
#
# Build deps: Xcode command line tools ->  xcode-select --install
#
# Cross note: Apple's clang is multi-arch, so on either Apple Silicon or Intel you
# can build BOTH darwin arches locally; "universal" just builds each and lipo's them.
set -euo pipefail
cd "$(dirname "$0")"

APP="tetherssh"
OUT="dist/macos"
mkdir -p "$OUT"

ARCH="${1:-$(go env GOARCH)}"   # arm64 | amd64 | universal

LDFLAGS=""
if [ "${STRIP:-1}" = "1" ]; then
  LDFLAGS="-s -w"
fi

build_one () {
  local goarch="$1" out="$2"
  echo ">> building ${APP} for darwin/${goarch} (CGO on)"
  CGO_ENABLED=1 GOOS=darwin GOARCH="${goarch}" \
    go build -trimpath -ldflags "${LDFLAGS}" -o "${out}" ./cli
}

if [ "${ARCH}" = "universal" ]; then
  build_one arm64 "${OUT}/${APP}.arm64"
  build_one amd64 "${OUT}/${APP}.amd64"
  echo ">> lipo -> universal"
  lipo -create -output "${OUT}/${APP}" "${OUT}/${APP}.arm64" "${OUT}/${APP}.amd64"
  rm -f "${OUT}/${APP}.arm64" "${OUT}/${APP}.amd64"
else
  build_one "${ARCH}" "${OUT}/${APP}"
fi

echo ">> done: ${OUT}/${APP}"
file "${OUT}/${APP}"

# Optional: produce a double-clickable TetherSSH.app instead of a bare binary.
#   go install fyne.io/fyne/v2/cmd/fyne@latest
#   fyne package -os darwin -name TetherSSH -icon Icon.png -src ./cli
# (run from repo root; needs an Icon.png and FyneApp.toml or -appID set)