Convert build scripts to CMake (#13427)

scripts/download-webkit.sh

@@ -1,85 +0,0 @@
-#!/usr/bin/env bash
-set -e
-
-OUTDIR="$1"
-TAG="$2"
-PKG="$3"
-
-if [ -z "$OUTDIR" ]; then
-  echo "Missing outdir"
-  exit 1
-fi
-if [ -z "$TAG" ]; then
-  echo "Missing tag"
-  exit 1
-fi
-if [ -z "$PKG" ]; then
-  echo "Missing package"
-  exit 1
-fi
-
-url="https://github.com/oven-sh/WebKit/releases/download/autobuild-$TAG/$PKG.tar.gz"
-
-old_tar_dir="$(dirname "$0")/../.webkit-cache"
-tar_dir="$(dirname "$0")/../.cache"
-if [ -d "$old_tar_dir" ]; then
-  # migration step from the old system
-  mkdir "$tar_dir"
-  mv "$old_tar_dir"/* "$tar_dir"
-  rm -r "$old_tar_dir"
-fi
-
-tar="$tar_dir/$PKG-$TAG.tar.gz"
-
-mkdir -p "$OUTDIR"
-mkdir -p "$tar_dir"
-
-if [ -f "$OUTDIR/.tag" ]; then
-  read_tag="$(cat "$OUTDIR/.tag")"
-  if [ "$read_tag" == "$TAG-$PKG" ]; then
-    exit 0
-  fi
-fi
-
-rm -rf "$OUTDIR"
-
-download () {
-  local command="$1"
-  local retries="$2"
-  local options="$-"
-  if [[ $options == *e* ]]; then
-    set +e
-  fi
-  $command
-  local exit_code=$?
-  if [[ $options == *e* ]]; then
-    set -e
-  fi
-  if [[ $exit_code -ne 0 && $retries -gt 0 ]]; then
-    download "$command" $(($retries - 1)) 
-  else
-    return $exit_code
-  fi
-}
-
-# this is a big download so we will retry 5 times and ask curl to resume
-# download from where failure occurred if it fails and is rerun
-if [ ! -f "$tar" ]; then
-  echo "-- Downloading WebKit"
-  if ! download "curl -C - --http1.1 -o $tar.tmp -L $url" 5; then
-    echo "Failed to download $url"
-    exit 1
-  else
-    mv $tar.tmp $tar
-  fi
-fi
-
-tar -xzf "$tar" -C "$(dirname "$OUTDIR")" || (rm "$tar" && exit 1)
-
-# We want to make sure we use the system-version of icucore on macOS
-if [ "$(uname)" == "Darwin" ]; then
-  # delete the unicode folder from include
-  rm -rf "$OUTDIR/include/unicode"
-fi
-
-echo "$TAG-$PKG" >"$OUTDIR/.tag"