feat: add gdu static musl build + generalize publish_release.py

scripts/build_gdu.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+set -eu
+
+VERSION="${1:?usage: build_gdu.sh <version> [output_dir]}"
+OUTPUT_DIR="${2:-$PWD/dist}"
+PREFIX_NAME="gdu-${VERSION}-linux-amd64-musl-static"
+
+# strip leading 'v' if passed
+VERSION="${VERSION#v}"
+
+mkdir -p "$OUTPUT_DIR"
+
+apk add --no-cache \
+  curl \
+  file \
+  go \
+  git \
+  tar \
+  xz
+
+# gdu uses Go modules, pull source from GitHub
+SRCDIR="${TMPDIR:-/tmp}/gdu-src-${VERSION}"
+rm -rf "$SRCDIR"
+mkdir -p "$SRCDIR"
+
+curl -fsSL "https://github.com/dundee/gdu/archive/refs/tags/v${VERSION}.tar.gz" \
+  | tar -xz -C "$SRCDIR" --strip-components=1
+
+cd "$SRCDIR"
+
+# Build fully static with musl toolchain
+# CGO_ENABLED=0 forces pure-Go, which means no C deps at all
+# ldflags: strip debug + disable dynamic linking
+CGO_ENABLED=0 GOARCH=amd64 GOOS=linux \
+  go build \
+    -trimpath \
+    -ldflags="-s -w -extldflags=-static" \
+    -o "$OUTPUT_DIR/$PREFIX_NAME" \
+    ./cmd/gdu
+
+strip "$OUTPUT_DIR/$PREFIX_NAME" 2>/dev/null || true
+
+(
+  cd "$OUTPUT_DIR"
+  tar -czf "${PREFIX_NAME}.tar.gz" "$PREFIX_NAME"
+  sha256sum "$PREFIX_NAME" "${PREFIX_NAME}.tar.gz" > "${PREFIX_NAME}.sha256"
+)
+
+file "$OUTPUT_DIR/$PREFIX_NAME"
+ldd "$OUTPUT_DIR/$PREFIX_NAME" || true
+
+if file "$OUTPUT_DIR/$PREFIX_NAME" | grep -qi 'dynamically linked'; then
+  echo "error: output binary is still dynamically linked" >&2
+  exit 1
+fi
+
+echo "build OK: $OUTPUT_DIR/$PREFIX_NAME"

scripts/publish_release.py

@@ -93,10 +93,11 @@ def main() -> int:
     if missing:
         raise SystemExit(f"missing files: {', '.join(missing)}")
 
-    tag = f"iperf3-v{version}"
-    title = f"iperf3 {version}"
+    tool = os.environ.get("TOOL", "iperf3")
+    tag = f"{tool}-v{version}"
+    title = f"{tool} {version}"
     body = (
-        f"Static musl build for iperf3 {version}.\\n\\n"
+        f"Static musl build for {tool} {version}.\\n\\n"
         f"Repository: {owner}/{repo}\\n"
         f"Commit: {target}"
     )