Update Google libraries

This commit updates:

- gflags 2.2.0 -> 2.2.1
- glog 0.3.4 -> 0.3.4
- gmock 1.7.0 -> 1.8.0
- gtest 1.7.0 -> 1.8.0

6 files changed, 164 insertions, 67 deletions

diff --git a/extern/gtest/README.blender b/extern/gtest/README.blender
index 41dda92c19c..6165bd6f717 100644
--- a/extern/gtest/README.blender
+++ b/extern/gtest/README.blender
@@ -1,7 +1,7 @@
 Project: Google C++ Testing Framework
 URL: https://github.com/google/googletest
 License: New BSD
-Upstream version: 1.7.0 (ec44c6c)
+Upstream version: 1.8.0 (ec44c6c1675)
 Local modifications:
 
 None.
diff --git a/extern/gtest/README.md b/extern/gtest/README.md
new file mode 100644
index 00000000000..22df99bd4b0
--- /dev/null
+++ b/extern/gtest/README.md
@@ -0,0 +1,138 @@
+
+# Google Test #
+
+[![Build Status](https://travis-ci.org/google/googletest.svg?branch=master)](https://travis-ci.org/google/googletest)
+
+Welcome to **Google Test**, Google's C++ test framework!
+
+This repository is a merger of the formerly separate GoogleTest and
+GoogleMock projects. These were so closely related that it makes sense to
+maintain and release them together.
+
+Please see the project page above for more information as well as the
+mailing list for questions, discussions, and development.  There is
+also an IRC channel on OFTC (irc.oftc.net) #gtest available.  Please
+join us!
+
+**Google Mock** is an extension to Google Test for writing and using C++ mock
+classes.  See the separate [Google Mock documentation](googlemock/README.md).
+
+More detailed documentation for googletest (including build instructions) are
+in its interior [googletest/README.md](googletest/README.md) file.
+
+## Features ##
+
+  * An [XUnit](https://en.wikipedia.org/wiki/XUnit) test framework.
+  * Test discovery.
+  * A rich set of assertions.
+  * User-defined assertions.
+  * Death tests.
+  * Fatal and non-fatal failures.
+  * Value-parameterized tests.
+  * Type-parameterized tests.
+  * Various options for running the tests.
+  * XML test report generation.
+
+## Platforms ##
+
+Google test has been used on a variety of platforms:
+
+  * Linux
+  * Mac OS X
+  * Windows
+  * Cygwin
+  * MinGW
+  * Windows Mobile
+  * Symbian
+
+## Who Is Using Google Test? ##
+
+In addition to many internal projects at Google, Google Test is also used by
+the following notable projects:
+
+  * The [Chromium projects](http://www.chromium.org/) (behind the Chrome
+    browser and Chrome OS).
+  * The [LLVM](http://llvm.org/) compiler.
+  * [Protocol Buffers](https://github.com/google/protobuf), Google's data
+    interchange format.
+  * The [OpenCV](http://opencv.org/) computer vision library.
+
+## Related Open Source Projects ##
+
+[Google Test UI](https://github.com/ospector/gtest-gbar) is test runner that runs
+your test binary, allows you to track its progress via a progress bar, and
+displays a list of test failures. Clicking on one shows failure text. Google
+Test UI is written in C#.
+
+[GTest TAP Listener](https://github.com/kinow/gtest-tap-listener) is an event
+listener for Google Test that implements the
+[TAP protocol](https://en.wikipedia.org/wiki/Test_Anything_Protocol) for test
+result output. If your test runner understands TAP, you may find it useful.
+
+## Requirements ##
+
+Google Test is designed to have fairly minimal requirements to build
+and use with your projects, but there are some.  Currently, we support
+Linux, Windows, Mac OS X, and Cygwin.  We will also make our best
+effort to support other platforms (e.g. Solaris, AIX, and z/OS).
+However, since core members of the Google Test project have no access
+to these platforms, Google Test may have outstanding issues there.  If
+you notice any problems on your platform, please notify
+<googletestframework@googlegroups.com>. Patches for fixing them are
+even more welcome!
+
+### 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-standard-compliant compiler
+
+### Windows Requirements ###
+
+  * Microsoft Visual C++ v7.1 or newer
+
+### Cygwin Requirements ###
+
+  * Cygwin v1.5.25-14 or newer
+
+### Mac OS X Requirements ###
+
+  * Mac OS X v10.4 Tiger or newer
+  * XCode Developer Tools
+
+### Requirements for Contributors ###
+
+We welcome patches.  If you plan to contribute a patch, you need to
+build Google Test and its own tests from a git checkout (described
+below), which has further requirements:
+
+  * [Python](https://www.python.org/) v2.3 or newer (for running some of
+    the tests and re-generating certain source files from templates)
+  * [CMake](https://cmake.org/) v2.6.4 or newer
+
+## Regenerating Source Files ##
+
+Some of Google Test's source files are generated from templates (not
+in the C++ sense) using a script.
+For example, the
+file include/gtest/internal/gtest-type-util.h.pump is used to generate
+gtest-type-util.h in the same directory.
+
+You don't need to worry about regenerating the source files
+unless you need to modify them.  You would then modify the
+corresponding `.pump` files and run the '[pump.py](googletest/scripts/pump.py)'
+generator script.  See the [Pump Manual](googletest/docs/PumpManual.md).
+
+### Contributing Code ###
+
+We welcome patches.  Please read the
+[Developer's Guide](googletest/docs/DevGuide.md)
+for how you can contribute. In particular, make sure you have signed
+the Contributor License Agreement, or we won't be able to accept the
+patch.
+
+Happy testing!
diff --git a/extern/gtest/include/gtest/gtest-printers.h b/extern/gtest/include/gtest/gtest-printers.h
index 27a1edc3728..8a33164cb38 100644
--- a/extern/gtest/include/gtest/gtest-printers.h
+++ b/extern/gtest/include/gtest/gtest-printers.h
@@ -103,7 +103,7 @@
 #include "gtest/internal/gtest-port.h"
 #include "gtest/internal/gtest-internal.h"
 
-#if defined(GTEST_HAS_STD_TUPLE_) && GTEST_HAS_STD_TUPLE_
+#if GTEST_HAS_STD_TUPLE_
 # include <tuple>
 #endif
 
@@ -581,7 +581,7 @@ inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
 }
 #endif  // GTEST_HAS_STD_WSTRING
 
-#if GTEST_HAS_TR1_TUPLE || (defined(GTEST_HAS_STD_TUPLE_) && GTEST_HAS_STD_TUPLE_)
+#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
 // Helper function for printing a tuple.  T must be instantiated with
 // a tuple type.
 template <typename T>
@@ -664,7 +664,7 @@ void PrintTo(
 }
 #endif  // GTEST_HAS_TR1_TUPLE
 
-#if defined(GTEST_HAS_STD_TUPLE_) && GTEST_HAS_STD_TUPLE_
+#if GTEST_HAS_STD_TUPLE_
 template <typename... Types>
 void PrintTo(const ::std::tuple<Types...>& t, ::std::ostream* os) {
   PrintTupleTo(t, os);
@@ -888,7 +888,7 @@ template <typename TupleT>
 const size_t TuplePolicy<TupleT>::tuple_size;
 #endif  // GTEST_HAS_TR1_TUPLE
 
-#if defined(GTEST_HAS_STD_TUPLE_) && GTEST_HAS_STD_TUPLE_
+#if GTEST_HAS_STD_TUPLE_
 template <typename... Types>
 struct TuplePolicy< ::std::tuple<Types...> > {
   typedef ::std::tuple<Types...> Tuple;
diff --git a/extern/gtest/include/gtest/gtest.h b/extern/gtest/include/gtest/gtest.h
index 18d3ed4b469..f846c5bd669 100644
--- a/extern/gtest/include/gtest/gtest.h
+++ b/extern/gtest/include/gtest/gtest.h
@@ -1818,7 +1818,7 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 
 // Define this macro to 1 to omit the definition of FAIL(), which is a
 // generic name and clashes with some other libraries.
-#if !defined(GTEST_DONT_DEFINE_FAIL) || !GTEST_DONT_DEFINE_FAIL
+#if !GTEST_DONT_DEFINE_FAIL
 # define FAIL() GTEST_FAIL()
 #endif
 
@@ -1827,7 +1827,7 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 
 // Define this macro to 1 to omit the definition of SUCCEED(), which
 // is a generic name and clashes with some other libraries.
-#if !defined(GTEST_DONT_DEFINE_SUCCEED) || !GTEST_DONT_DEFINE_SUCCEED
+#if !GTEST_DONT_DEFINE_SUCCEED
 # define SUCCEED() GTEST_SUCCEED()
 #endif
 
@@ -1952,27 +1952,27 @@ class TestWithParam : public Test, public WithParamInterface<T> {
 // Define macro GTEST_DONT_DEFINE_ASSERT_XY to 1 to omit the definition of
 // ASSERT_XY(), which clashes with some users' own code.
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_EQ) || !GTEST_DONT_DEFINE_ASSERT_EQ
+#if !GTEST_DONT_DEFINE_ASSERT_EQ
 # define ASSERT_EQ(val1, val2) GTEST_ASSERT_EQ(val1, val2)
 #endif
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_NE) || !GTEST_DONT_DEFINE_ASSERT_NE
+#if !GTEST_DONT_DEFINE_ASSERT_NE
 # define ASSERT_NE(val1, val2) GTEST_ASSERT_NE(val1, val2)
 #endif
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_LE) || !GTEST_DONT_DEFINE_ASSERT_LE
+#if !GTEST_DONT_DEFINE_ASSERT_LE
 # define ASSERT_LE(val1, val2) GTEST_ASSERT_LE(val1, val2)
 #endif
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_LT) || !GTEST_DONT_DEFINE_ASSERT_LT
+#if !GTEST_DONT_DEFINE_ASSERT_LT
 # define ASSERT_LT(val1, val2) GTEST_ASSERT_LT(val1, val2)
 #endif
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_GE) || !GTEST_DONT_DEFINE_ASSERT_GE
+#if !GTEST_DONT_DEFINE_ASSERT_GE
 # define ASSERT_GE(val1, val2) GTEST_ASSERT_GE(val1, val2)
 #endif
 
-#if !defined(GTEST_DONT_DEFINE_ASSERT_GT) || !GTEST_DONT_DEFINE_ASSERT_GT
+#if !GTEST_DONT_DEFINE_ASSERT_GT
 # define ASSERT_GT(val1, val2) GTEST_ASSERT_GT(val1, val2)
 #endif
 
@@ -2183,7 +2183,7 @@ bool StaticAssertTypeEq() {
 
 // Define this macro to 1 to omit the definition of TEST(), which
 // is a generic name and clashes with some other libraries.
-#if !defined(GTEST_DONT_DEFINE_TEST) || !GTEST_DONT_DEFINE_TEST
+#if !GTEST_DONT_DEFINE_TEST
 # define TEST(test_case_name, test_name) GTEST_TEST(test_case_name, test_name)
 #endif
 
diff --git a/extern/gtest/include/gtest/internal/gtest-internal.h b/extern/gtest/include/gtest/internal/gtest-internal.h
index ca15a2f3a78..ebd1cf615de 100644
--- a/extern/gtest/include/gtest/internal/gtest-internal.h
+++ b/extern/gtest/include/gtest/internal/gtest-internal.h
@@ -60,10 +60,6 @@
 #include <string>
 #include <vector>
 
-#if (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
-# include <type_traits>
-#endif
-
 #include "gtest/gtest-message.h"
 #include "gtest/internal/gtest-string.h"
 #include "gtest/internal/gtest-filepath.h"
@@ -858,7 +854,6 @@ struct AddReference<T&> { typedef T& type; };  // NOLINT
 template <typename From, typename To>
 class ImplicitlyConvertible {
  private:
-#if !((__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1800))
   // We need the following helper functions only for their types.
   // They have no implementations.
 
@@ -879,7 +874,6 @@ class ImplicitlyConvertible {
   // implicitly converted to type To.
   static char Helper(To);
   static char (&Helper(...))[2];  // NOLINT
-#endif
 
   // We have to put the 'public' section after the 'private' section,
   // or MSVC refuses to compile the code.
@@ -889,8 +883,6 @@ class ImplicitlyConvertible {
   // instantiation.  The simplest workaround is to use its C++0x type traits
   // functions (C++Builder 2009 and above only).
   static const bool value = __is_convertible(From, To);
-#elif (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
-  static const bool value = std::is_convertible<From, To>::value;
 #else
   // MSVC warns about implicitly converting from double to int for
   // possible loss of data, so we need to temporarily disable the
diff --git a/extern/gtest/include/gtest/internal/gtest-port.h b/extern/gtest/include/gtest/internal/gtest-port.h
index ad2a43df17d..0094ed5077e 100644
--- a/extern/gtest/include/gtest/internal/gtest-port.h
+++ b/extern/gtest/include/gtest/internal/gtest-port.h
@@ -306,7 +306,7 @@
 //   GTEST_DISABLE_MSC_WARNINGS_PUSH_(4800 4385)
 //   /* code that triggers warnings C4800 and C4385 */
 //   GTEST_DISABLE_MSC_WARNINGS_POP_()
-#if defined(_MSC_VER) && _MSC_VER >= 1500
+#if _MSC_VER >= 1500
 # define GTEST_DISABLE_MSC_WARNINGS_PUSH_(warnings) \
     __pragma(warning(push))                        \
     __pragma(warning(disable: warnings))
@@ -323,7 +323,7 @@
 // -std={c,gnu}++{0x,11} is passed.  The C++11 standard specifies a
 // value for __cplusplus, and recent versions of clang, gcc, and
 // probably other compilers set that too in C++11 mode.
-# if defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L
+# if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L
 // Compiling in at least C++11 mode.
 #  define GTEST_LANG_CXX11 1
 # else
@@ -352,7 +352,7 @@
 #endif
 
 // Only use C++11 library features if the library provides them.
-#if defined(GTEST_STDLIB_CXX11) && GTEST_STDLIB_CXX11
+#if GTEST_STDLIB_CXX11
 # define GTEST_HAS_STD_BEGIN_AND_END_ 1
 # define GTEST_HAS_STD_FORWARD_LIST_ 1
 # define GTEST_HAS_STD_FUNCTION_ 1
@@ -387,37 +387,6 @@
 # endif
 #endif
 
-#ifndef GTEST_OS_WINDOWS
-#  define GTEST_OS_WINDOWS 0
-#endif
-#ifndef GTEST_OS_WINDOWS_MINGW
-#  define GTEST_OS_WINDOWS_MINGW 0
-#endif
-#ifndef GTEST_OS_WINDOWS_PHONE
-#  define GTEST_OS_WINDOWS_PHONE 0
-#endif
-#ifndef GTEST_OS_WINDOWS_MOBILE
-#  define GTEST_OS_WINDOWS_MOBILE 0
-#endif
-#ifndef GTEST_OS_WINDOWS_RT
-#  define GTEST_OS_WINDOWS_RT 0
-#endif
-#ifndef GTEST_OS_LINUX_ANDROID
-#  define GTEST_OS_LINUX_ANDROID 0
-#endif
-#ifndef GTEST_OS_QNX
-#  define GTEST_OS_QNX 0
-#endif
-#ifndef GTEST_OS_SYMBIAN
-#  define GTEST_OS_SYMBIAN 0
-#endif
-#ifndef GTEST_OS_CYGWIN
-#  define GTEST_OS_CYGWIN 0
-#endif
-#ifndef GTEST_OS_SOLARIS
-#  define GTEST_OS_SOLARIS 0
-#endif
-
 // Brings in definitions for functions used in the testing::internal::posix
 // namespace (read, write, close, chdir, isatty, stat). We do not currently
 // use them on Windows Mobile.
@@ -454,7 +423,7 @@ struct _RTL_CRITICAL_SECTION;
 # endif
 #endif
 
-#if defined(GTEST_USES_PCRE) && GTEST_USES_PCRE
+#if GTEST_USES_PCRE
 // The appropriate headers have already been included.
 
 #elif GTEST_HAS_POSIX_RE
@@ -647,7 +616,7 @@ struct _RTL_CRITICAL_SECTION;
 // Determines if hash_map/hash_set are available.
 // Only used for testing against those containers.
 #if !defined(GTEST_HAS_HASH_MAP_)
-# if defined(_MSC_VER)
+# if _MSC_VER
 #  define GTEST_HAS_HASH_MAP_ 1  // Indicates that hash_map is available.
 #  define GTEST_HAS_HASH_SET_ 1  // Indicates that hash_set is available.
 # endif  // _MSC_VER
@@ -691,8 +660,6 @@ struct _RTL_CRITICAL_SECTION;
 // can build with clang but need to use gcc4.2's libstdc++).
 # if GTEST_LANG_CXX11 && (!defined(__GLIBCXX__) || __GLIBCXX__ > 20110325)
 #  define GTEST_ENV_HAS_STD_TUPLE_ 1
-# else
-#  define GTEST_ENV_HAS_STD_TUPLE_ 0
 # endif
 
 # if GTEST_ENV_HAS_TR1_TUPLE_ || GTEST_ENV_HAS_STD_TUPLE_
@@ -706,7 +673,7 @@ struct _RTL_CRITICAL_SECTION;
 // To avoid conditional compilation everywhere, we make it
 // gtest-port.h's responsibility to #include the header implementing
 // tuple.
-#if defined(GTEST_HAS_STD_TUPLE_) && GTEST_HAS_STD_TUPLE_
+#if GTEST_HAS_STD_TUPLE_
 # include <tuple>  // IWYU pragma: export
 # define GTEST_TUPLE_NAMESPACE_ ::std
 #endif  // GTEST_HAS_STD_TUPLE_
@@ -947,7 +914,7 @@ using ::std::tuple_size;
 # endif
 
 #define GTEST_IS_THREADSAFE \
-    ((defined(GTEST_HAS_MUTEX_AND_THREAD_LOCAL_) && GTEST_HAS_MUTEX_AND_THREAD_LOCAL_) \
+    (GTEST_HAS_MUTEX_AND_THREAD_LOCAL_ \
      || (GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_PHONE && !GTEST_OS_WINDOWS_RT) \
      || GTEST_HAS_PTHREAD)
 
@@ -1343,7 +1310,7 @@ inline void FlushInfoLog() { fflush(NULL); }
     GTEST_LOG_(FATAL) << #posix_call << "failed with error " \
                       << gtest_error
 
-#if defined(GTEST_HAS_STD_MOVE_) && GTEST_HAS_STD_MOVE_
+#if GTEST_HAS_STD_MOVE_
 using std::move;
 #else  // GTEST_HAS_STD_MOVE_
 template <typename T>
@@ -1427,7 +1394,7 @@ Derived* CheckedDowncastToActualType(Base* base) {
   GTEST_CHECK_(typeid(*base) == typeid(Derived));
 #endif
 
-#if defined(GTEST_HAS_DOWNCAST_) && GTEST_HAS_DOWNCAST_
+#if GTEST_HAS_DOWNCAST_
   return ::down_cast<Derived*>(base);
 #elif GTEST_HAS_RTTI
   return dynamic_cast<Derived*>(base);  // NOLINT
@@ -1487,7 +1454,7 @@ inline void SleepMilliseconds(int n) {
 }
 # endif  // GTEST_HAS_PTHREAD
 
-# if defined(GTEST_HAS_NOTIFICATION_) && GTEST_HAS_NOTIFICATION_
+# if GTEST_HAS_NOTIFICATION_
 // Notification has already been imported into the namespace.
 // Nothing to do here.
 
@@ -1670,7 +1637,7 @@ class ThreadWithParam : public ThreadWithParamBase {
 # endif  // !GTEST_OS_WINDOWS && GTEST_HAS_PTHREAD ||
          // GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
 
-# if defined(GTEST_HAS_MUTEX_AND_THREAD_LOCAL_) && GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
+# if GTEST_HAS_MUTEX_AND_THREAD_LOCAL_
 // Mutex and ThreadLocal have already been imported into the namespace.
 // Nothing to do here.
 
@@ -2450,7 +2417,7 @@ inline void Abort() { abort(); }
 // MSVC-based platforms.  We map the GTEST_SNPRINTF_ macro to the appropriate
 // function in order to achieve that.  We use macro definition here because
 // snprintf is a variadic function.
-#if defined(_MSC_VER) && _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
+#if _MSC_VER >= 1400 && !GTEST_OS_WINDOWS_MOBILE
 // MSVC 2005 and above support variadic macros.
 # define GTEST_SNPRINTF_(buffer, size, format, ...) \
      _snprintf_s(buffer, size, size, format, __VA_ARGS__)