bin/deps-and-gyp: gclient-free solution

bin/deps-and-gyp

 #!/bin/sh
 
 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This script will update Skia's dependenciess as necessary and run
 # gyp if needed.
 
-# Example usage (assumes Posix-standard shell, git installed):
+# Depends on: Posix-compliant shell, Python, and Git.
 #
-#   git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
-#   export PATH="${PWD}/depot_tools:${PATH}"
+# Example usage:
+#
 #   git clone https://skia.googlesource.com/skia
 #   cd skia
-#   bin/sync-and-gyp && ninja -C out/Debug
-#   out/Debug/dm
+#   bin/deps-and-gyp
+#   ninja -C out/Debug && out/Debug/dm
 #
-# Once changes are made to DEPS or gyp/ or the source, recompile Skia with:
+# Once changes are made to DEPS or gyp/ or the source, call:
 #
-#   ${skiadir}/bin/sync-and-gyp && ninja -C ${skiadir}/out/Debug
+#   bin/deps-and-gyp
+
+if [ "$SKIA_OUT" ]; then
+    mkdir -p "$SKIA_OUT" || exit
+    # get non-relative path of $SKIA_OUT before changing directory.
+    SKIA_OUT="$(cd "$SKIA_OUT"; pwd)"
+fi
 
 cd "$(dirname "$0")/.."
 
-if ! [ -f .gclient ] ; then
-    gclient config --unmanaged 'https://skia.googlesource.com/skia'
-    printf ',s/"skia"/"."/\nwq\n' | ed .gclient
-fi
-
 if ! [ -f DEPS ]; then
     echo DEPS file missing >&2
     exit 1
 fi
 
 if [ "$(git hash-object DEPS)" != "$(git config sync-deps.last)" ] ; then
-    gclient sync || exit
+    GIT_SYNC_DEPS_QUIET=1 python tools/git-sync-deps || exit
     git config sync-deps.last "$(git hash-object DEPS)"
 fi
 
 catifexists() { if [ -f "$1" ]; then cat "$1"; fi; }
 
 gyp_hasher() {
     {
         echo "$CC"
         echo "$CXX"
         echo "$GYP_GENERATORS"
         echo "$GYP_DEFINES"
         find gyp -type f -print -exec git hash-object {} \;
         find bench gm tests -name '*.c*' | LANG= sort
     } | git hash-object --stdin
 }
 
 : ${SKIA_OUT:=out}
 GYP_HASH=$(gyp_hasher)
 HASH_PATH="${SKIA_OUT}/gyp_hash"
 if [ "$GYP_HASH" != "$(catifexists "$HASH_PATH")" ]; then
     python ./gyp_skia || exit
     echo "$GYP_HASH" > "$HASH_PATH"
 fi