cmake_build: support SKIA_OUT and BUILDTYPE

cmake/cmake_build

 #!/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.
 
 # Script for building with CMake on Skia build bots.
 # If you have CMake installed on your system, you can just use it normally.
 
 set -e
 set -x
 
-here=`dirname $0`
+fulldir() {
+    cd `dirname $1`
+    echo `pwd`
+}
+
+here=`fulldir $0`
 cores=32
 
+type=${BUILDTYPE:-"Release"}
+out=${SKIA_OUT:-$here}

[borenet, 2015/09/14 18:16:00]

I think "out" is a better default.

+
 echo "Bootstrapping CMake"
 pushd $here/../third_party/externals/cmake
 ./bootstrap --parallel=$cores
 make -j $cores
 popd
 
 echo "Building with bootstrapped CMake"
-pushd $here
-../third_party/externals/cmake/bin/cmake . -G Ninja
+mkdir -p $out
+pushd $out
+$here/../third_party/externals/cmake/bin/cmake -DCMAKE_BUILD_TYPE=$type $here -G Ninja

[borenet, 2015/09/14 18:16:00]

What's the second $here used for?  Should it be $out instead?

 ninja skia  # The default also builds `example`, which I'm leaving a TODO for now.
 popd