Put all prebuild scripts in external files.

webkit/webkit.xcodeproj/webcore_prebuild.sh

+#!/bin/sh
+
+# Copyright (c) 2008 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -ex
+GENERATED_DIR="${CONFIGURATION_TEMP_DIR}/generated"
+mkdir -p "${GENERATED_DIR}"
+
+# Generate the webkit version header
+mkdir -p "${GENERATED_DIR}/include/v8/new"
+python build/webkit_version.py \
+       ../third_party/WebKit/WebCore/Configurations/Version.xcconfig \
+       "${GENERATED_DIR}/include/v8/new"
+
+# Only use new the file if it's different from the existing file (if any),
+# preserving the existing file's timestamp when there are no changes.  This
+# minimizes unnecessary build activity for a no-change build.
+if ! diff -q "${GENERATED_DIR}/include/v8/new/webkit_version.h" \
+             "${GENERATED_DIR}/include/v8/webkit_version.h" >& /dev/null ; then
+  mv "${GENERATED_DIR}/include/v8/new/webkit_version.h" \
+     "${GENERATED_DIR}/include/v8/webkit_version.h"
+else
+  rm "${GENERATED_DIR}/include/v8/new/webkit_version.h"
+fi
+
+rmdir "${GENERATED_DIR}/include/v8/new"
+
+# TODO(mmentovai): fix this to not be so hokey - the Apple build expects
+# JavaScriptCore to be in a framework  This belongs in the JSConfig target,
+# which already does something similar
+mkdir -p "${GENERATED_DIR}/include/v8/JavaScriptCore"
+cp -p "${SRCROOT}/../third_party/WebKit/JavaScriptCore/bindings/npruntime.h" \
+      "${GENERATED_DIR}/include/v8/JavaScriptCore"
+
+export DerivedSourcesDir="${GENERATED_DIR}/DerivedSources/v8/WebCore"
+mkdir -p "${GENERATED_DIR}/DerivedSources/v8/WebCore"
+cd "${GENERATED_DIR}/DerivedSources/v8/WebCore"
+
+# export CREATE_HASH_TABLE="${SRCROOT}/../third_party/WebKit/JavaScriptCore/kjs/create_hash_table"
+# TODO(mmentovai): The above is normally correct, but create_hash_table wound
+# up without the svn:executable property set in our repository.  See the TODO
+# in jsbindings_prebuild.sh.
+export CREATE_HASH_TABLE="${GENERATED_DIR}/create_hash_table"
+
+ln -sfh "${SRCROOT}/../third_party/WebKit/WebCore" WebCore
+export WebCore="WebCore"
+export SOURCE_ROOT="${WebCore}"
+export PORTROOT="${SRCROOT}/port"
+
+export PUBLICDOMINTERFACES="${PORTROOT}/../pending/PublicDOMInterfaces.h"
+make -f "${SRCROOT}/pending/DerivedSources.make" \
+     -j $(/usr/sbin/sysctl -n hw.ncpu)
+
+# Allow framework-style #imports of <WebCore/whatever.h> to find the right
+# headers.
+cd ..
+mkdir -p ForwardingHeaders/loader
+ln -sfh "${SRCROOT}/../third_party/WebKit/WebCore/loader" \
+        ForwardingHeaders/loader/WebCore