build: finish cross-platform release tooling

2026-10-10 16:21:00 +08:00
parent 9bf7707912
commit 50abcf1a91
29 changed files with 973 additions and 230 deletions
@@ -0,0 +1,87 @@
+#!/usr/bin/env bash
+# Fetch a musl cross gcc for a static Linux release build.
+#   scripts/ci_linux_toolchain.sh x86_64|x86|aarch64
+# Prints "HOST BINDIR" on stdout (e.g. "x86_64-buildroot-linux-musl
+# /opt/x86-64--musl--stable-2025.08-1/bin"); progress goes to stderr.
+# Bootlin's pinned stable release first, musl.cc as a fallback.
+set -euo pipefail
+
+ARCH="${1:?usage: $0 x86_64|x86|aarch64}"
+BOOTLIN_VER="${CST_BOOTLIN_VER:-2025.08-1}"
+case "$ARCH" in
+x86_64)
+  bl=x86-64 bl_host=x86_64-buildroot-linux-musl mc=x86_64-linux-musl
+  sha=09fca3aa89540f1b01b5f4210d488cbeb00f522044c53e9989b1dd8a38076912
+  ;;
+x86)
+  bl=x86-i686 bl_host=i686-buildroot-linux-musl mc=i686-linux-musl
+  sha=3a340ebc386a057f5ddb24d8f4bbde07d2c013c99cebc02ac38565e2849bfda0
+  ;;
+aarch64)
+  bl=aarch64 bl_host=aarch64-buildroot-linux-musl mc=aarch64-linux-musl
+  sha=defba831ffa1175236f137069333e21ed46d4d19feb5080a90cf248b6fc2cb08
+  ;;
+*)
+  echo "unknown arch: $ARCH" >&2
+  exit 1
+  ;;
+esac
+[[ "$BOOTLIN_VER" == 2025.08-1 ]] || sha="" # other releases: no pinned hash
+
+if [[ -n "${CST_TOOLCHAIN_ROOT:-}" ]]; then
+  ROOT_DIR="$CST_TOOLCHAIN_ROOT"
+elif [[ -w /opt || "$(id -u)" -eq 0 ]]; then
+  ROOT_DIR=/opt
+else
+  ROOT_DIR="$HOME/.local/toolchains"
+fi
+mkdir -p "$ROOT_DIR"
+
+fetch() { # out url...
+  local out="$1" u
+  shift
+  for u in "$@"; do
+    echo "  try $u" >&2
+    if curl -fsSL --retry 2 --connect-timeout 15 --max-time 900 -o "$out" "$u"; then
+      return 0
+    fi
+  done
+  return 1
+}
+
+emit() { # host bindir
+  "$2/$1-gcc" -dumpmachine >&2
+  [[ -n "${GITHUB_PATH:-}" ]] && echo "$2" >>"$GITHUB_PATH"
+  echo "$1 $2"
+}
+
+name="$bl--musl--stable-$BOOTLIN_VER"
+dir="$ROOT_DIR/$name"
+if [[ -x "$dir/bin/$bl_host-gcc" ]]; then
+  emit "$bl_host" "$dir/bin"
+  exit 0
+fi
+
+echo "==> toolchain $name" >&2
+tmp="$ROOT_DIR/$name.tar.xz"
+if fetch "$tmp" "https://toolchains.bootlin.com/downloads/releases/toolchains/$bl/tarballs/$name.tar.xz" &&
+    { [[ -z "$sha" ]] || echo "$sha  $tmp" | sha256sum -c --quiet - >&2; }; then
+  tar -C "$ROOT_DIR" -xJf "$tmp"
+  rm -f "$tmp"
+  # Bootlin toolchains are relocatable but must be told once where they are.
+  [[ -x "$dir/relocate-sdk.sh" ]] && "$dir/relocate-sdk.sh" >&2
+  emit "$bl_host" "$dir/bin"
+  exit 0
+fi
+rm -f "$tmp"
+
+echo "==> bootlin unavailable, falling back to musl.cc" >&2
+mdir="$ROOT_DIR/$mc-cross"
+if [[ ! -x "$mdir/bin/$mc-gcc" ]]; then
+  tgz="$ROOT_DIR/$mc-cross.tgz"
+  fetch "$tgz" "https://musl.cc/$mc-cross.tgz" "https://more.musl.cc/x86_64-linux-musl/$mc-cross.tgz" ||
+    { echo "no musl toolchain for $ARCH" >&2; exit 1; }
+  tar -C "$ROOT_DIR" -xzf "$tgz"
+  rm -f "$tgz"
+fi
+emit "$mc" "$mdir/bin"