1#!/bin/sh
2
3# Copyright 2015 Google Inc.
4#
5# Use of this source code is governed by a BSD-style license that can be
6# found in the LICENSE file.
7
8# This script will update Skia's dependenciess as necessary and run
9# gyp if needed.
10
11# Example usage (assumes Posix-standard shell, git installed):
12#
13#   git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
14#   export PATH="${PWD}/depot_tools:${PATH}"
15#   git clone https://skia.googlesource.com/skia
16#   cd skia
17#   bin/sync-and-gyp && ninja -C out/Debug
18#   out/Debug/dm
19#
20# Once changes are made to DEPS or gyp/ or the source, recompile Skia with:
21#
22#   ${skiadir}/bin/sync-and-gyp && ninja -C ${skiadir}/out/Debug
23
24cd "$(dirname "$0")/.."
25
26if ! [ -f .gclient ] ; then
27    gclient config --name . --unmanaged 'https://skia.googlesource.com/skia'
28fi
29
30if ! [ -f DEPS ]; then
31    echo DEPS file missing >&2
32    exit 1
33fi
34
35if [ "$(git hash-object DEPS)" != "$(git config sync-deps.last)" ] ; then
36    gclient sync || exit
37    git config sync-deps.last "$(git hash-object DEPS)"
38fi
39
40function catifexists() { if [ -f "$1" ]; then cat "$1"; fi; }
41
42function gyp_hasher() {
43    {
44        echo "$GYP_GENERATORS"
45        echo "$GYP_DEFINES"
46        find gyp -type f -print -exec git hash-object {} \;
47    } | git hash-object --stdin
48}
49
50: ${SKIA_OUT:=out}
51GYP_HASH=$(gyp_hasher)
52HASH_PATH="${SKIA_OUT}/gyp_hash"
53if [ "$GYP_HASH" != "$(catifexists "$HASH_PATH")" ]; then
54    python ./gyp_skia || exit
55    echo "$GYP_HASH" > "$HASH_PATH"
56fi
57