Transition to pulling open-vcdiff from repository, instead of using snapshot...

sdch/open_vcdiff/depot/opensource/open-vcdiff/src/gtest/README

-*** NOTE: The files in the open-vcdiff/src/gtest directory are only a subset of
-***       the full Google Test package.  If you want to use Google Test with a
-***       project other than open-vcdiff, please do not use this bundled copy.
-***       Instead, please download the latest version of Google Test from:
-***           http://code.google.com/p/googletest/
-
-Google C++ Testing Framework
-============================
-http://code.google.com/p/googletest/
-
-Overview
---------
-Google's framework for writing C++ tests on a variety of platforms (Linux, Mac
-OS X, Windows, Windows CE, and Symbian). Based on the xUnit architecture.
-Supports automatic test discovery, a rich set of assertions, user-defined
-assertions, death tests, fatal and non-fatal failures, various options for
-running the tests, and XML test report generation.
-
-Please see the project page above for more information as well as mailing lists
-for questions, discussions, and development. There is also an IRC channel on
-OFTC (irc.oftc.net) #gtest available. Please join us!
-
-Requirements
-------------
-Google Test is designed to have fairly minimal requirements to build and use
-with your projects, but there are some. Currently, the only Operating System
-(OS) on which Google Test is known to build properly is Linux, but we are
-actively working on Windows and Mac support as well. The source code itself is
-already portable across many other platforms, but we are still developing
-robust build systems for each.
-
-### Linux Requirements ###
-These are the base requirements to build and use Google Test from a source
-package (as described below):
-  * GNU-compatible Make or "gmake"
-  * POSIX-standard shell
-  * POSIX(-2) Regular Expressions (regex.h)
-  * A C++98 standards compliant compiler
-
-Furthermore, if you are building Google Test from a VCS Checkout (also
-described below), there are further requirements:
-  * Automake version 1.9 or newer
-  * Autoconf version 2.59 or newer
-  * Libtool / Libtoolize
-  * Python version 2.4 or newer
-
-### Windows Requirements ###
-  * Microsoft Visual Studio 7.1 or newer
-
-### Cygwin Requirements ###
-  * Cygwin 1.5.25-14 or newer
-
-### Mac OS X Requirements ###
-  * Mac OS X 10.4 Tiger or newer
-
-Getting the Source
-------------------
-There are two primary ways of getting Google Test's source code: you can
-download a source release in your preferred archive format, or directly check
-out the source from a Version Control System (VCS, we use Google Code's
-Subversion hosting). The VCS checkout requires a few extra steps and some extra
-software packages on your system, but lets you track development, and make
-patches to contribute much more easily, so we highly encourage it.
-
-### VCS Checkout: ###
-The first step is to select whether you want to check out the main line of
-development on Google Test, or one of the released branches. The former will be
-much more active and have the latest features, but the latter provides much
-more stability and predictability. Choose whichever fits your needs best, and
-proceed with the following Subversion commands:
-
-  $ svn checkout http://googletest.googlecode.com/svn/trunk/ gtest-svn
-
-or for a release version X.Y.*'s branch:
-
-  $ svn checkout http://googletest.googlecode.com/svn/branches/release-X.Y/ gtest-X.Y-svn
-
-Next you will need to prepare the GNU Autotools build system, if you
-are using Linux, Mac OS X, or Cygwin. Enter the target directory of
-the checkout command you used ('gtest-svn' or 'gtest-X.Y-svn' above)
-and proceed with the following commands:
-
-  $ aclocal-1.9       # Where "1.9" must match the following automake command.
-  $ libtoolize -c     # Use "glibtoolize -c" instead on Mac OS X.
-  $ autoheader
-  $ automake-1.9 -ac  # See Automake version requirements above.
-  $ autoconf
-
-While this is a bit complicated, it will most often be automatically re-run by
-your "make" invocations, so in practice you shouldn't need to worry too much.
-Once you have completed these steps, you are ready to build the library. 
-
-### Source Package: ###
-Google Test is also released in source packages which can be downloaded from
-its Google Code download page[1]. Several different archive formats are
-provided, but the only difference is the tools used to manipulate them, and the
-size of the resulting file. Download whichever you are most comfortable with.
-
-  [1] Google Test Downloads: http://code.google.com/p/googletest/downloads/list
-
-Once downloaded expand the archive using whichever tools you prefer for that
-type. This will always result in a new directory with the name "gtest-X.Y.Z"
-which contains all of the source code. Here are some examples in Linux:
-
-  $ tar -xvzf gtest-X.Y.Z.tar.gz
-  $ tar -xvjf gtest-X.Y.Z.tar.bz2
-  $ unzip gtest-X.Y.Z.zip
-
-Building the Source
--------------------
-
-### Linux, Mac OS X, and Cygwin ###
-There are two primary options for building the source at this point: build it
-inside the source code tree, or in a separate directory. We recommend building
-in a separate directory as that tends to produce both more consistent results
-and be easier to clean up should anything go wrong, but both patterns are
-supported. The only hard restriction is that while the build directory can be
-a subdirectory of the source directory, the opposite is not possible and will
-result in errors. Once you have selected where you wish to build Google Test,
-create the directory if necessary, and enter it. The following steps apply for
-either approach by simply substituting the shell variable SRCDIR with "." for
-building inside the source directory, and the relative path to the source
-directory otherwise.
-
-  $ ${SRCDIR}/configure  # Standard GNU configure script, --help for more info
-  $ make  # Standard makefile following GNU conventions
-  $ make check  # Builds and runs all tests - all should pass
-
-Other programs will only be able to use Google Test's functionality if you
-install it in a location which they can access, in Linux this is typically
-under '/usr/local'. The following command will install all of the Google Test
-libraries, public headers, and utilities necessary for other programs and
-libraries to leverage it:
-
-  $ sudo make install  # Not necessary, but allows use by other programs
-
-TODO(chandlerc@google.com): This section needs to be expanded when the
-'gtest-config' script is finished and Autoconf macro's are provided (or not
-provided) in order to properly reflect the process for other programs to
-locate, include, and link against Google Test.
-
-Finally, should you need to remove Google Test from your system after having
-installed it, run the following command, and it will back out its changes.
-However, note carefully that you must run this command on the *same* Google
-Test build that you ran the install from, or the results are not predictable.
-If you install Google Test on your system, and are working from a VCS checkout,
-make sure you run this *before* updating your checkout of the source in order
-to uninstall the same version which you installed.
-
-  $ sudo make uninstall  # Must be run against the exact same build as "install"
-
-### Windows ###
-Open the gtest.sln file in the msvc/ folder using Visual Studio, and
-you are ready to build Google Test the same way you build any Visual
-Studio project.
-
-Happy testing!