Reland 'Move libc++ and libc++abi to buildtools.'

third_party/libc++/libc++.gyp

Index: third_party/libc++/libc++.gyp
diff --git a/third_party/libc++/libc++.gyp b/third_party/libc++/libc++.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..3313a510e2a3eab85108e5a8aead470ae4670afe
--- /dev/null
+++ b/third_party/libc++/libc++.gyp
@@ -0,0 +1,117 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'targets': [
+    {
+      'target_name': 'libcxx_proxy',
+      'type': 'none',
+      'dependencies=': [
+        'libc++',
+      ],
+      # Do not add dependency on libc++.so to dependents of this target. We
+      # don't want to pass libc++.so on the command line to the linker, as that
+      # would cause it to be linked into C executables which don't need it.
+      # Instead, we supply -stdlib=libc++ and let the clang driver decide.
+      'dependencies_traverse': 0,
+      'variables': {
+        # Don't add this target to the dependencies of targets with type=none.
+        'link_dependency': 1,
+      },
+      'all_dependent_settings': {
+        'target_conditions': [
+          ['_type!="none"', {
+            'include_dirs': [
+              'trunk/include',
+              '../libc++abi/trunk/include',
+            ],
+            'cflags_cc': [
+              '-nostdinc++',
+            ],
+            'ldflags': [
+              '-stdlib=libc++',
+              # Normally the generator takes care of RPATH. Our case is special
+              # because the generator is unaware of the libc++.so dependency.
+              # Note that setting RPATH here is a potential security issue. See:
+              # https://code.google.com/p/gyp/issues/detail?id=315
+              '-Wl,-R,\$$ORIGIN/lib/',
+            ],
+            'library_dirs': [
+              '<(PRODUCT_DIR)/lib/',
+            ],
+          }],
+        ],
+      },
+    },
+    {
+      'target_name': 'libc++',
+      'type': 'shared_library',
+      'dependencies=': [
+        # libc++abi is linked statically into libc++.so. This allows us to get
+        # both libc++ and libc++abi by passing '-stdlib=libc++'. If libc++abi
+        # was a separate DSO, we'd have to link against it explicitly.
+        '../libc++abi/libc++abi.gyp:libc++abi',
+      ],
+      'sources': [
+        'trunk/src/algorithm.cpp',
+        'trunk/src/bind.cpp',
+        'trunk/src/chrono.cpp',
+        'trunk/src/condition_variable.cpp',
+        'trunk/src/debug.cpp',
+        'trunk/src/exception.cpp',
+        'trunk/src/future.cpp',
+        'trunk/src/hash.cpp',
+        'trunk/src/ios.cpp',
+        'trunk/src/iostream.cpp',
+        'trunk/src/locale.cpp',
+        'trunk/src/memory.cpp',
+        'trunk/src/mutex.cpp',
+        'trunk/src/new.cpp',
+        'trunk/src/optional.cpp',
+        'trunk/src/random.cpp',
+        'trunk/src/regex.cpp',
+        'trunk/src/shared_mutex.cpp',
+        'trunk/src/stdexcept.cpp',
+        'trunk/src/string.cpp',
+        'trunk/src/strstream.cpp',
+        'trunk/src/system_error.cpp',
+        'trunk/src/thread.cpp',
+        'trunk/src/typeinfo.cpp',
+        'trunk/src/utility.cpp',
+        'trunk/src/valarray.cpp',
+      ],
+      'include_dirs': [
+        'trunk/include',
+        '../libc++abi/trunk/include',
+      ],
+      'cflags': [
+        '-fstrict-aliasing',
+        '-nostdinc++',
+        '-std=c++11',
+      ],
+      'cflags_cc!': [
+        '-fno-exceptions',
+        '-fno-rtti',
+      ],
+      'cflags!': [
+        '-fvisibility=hidden',
+      ],
+      'ldflags': [
+        '-nodefaultlibs',
+      ],
+      'ldflags!': [
+        # This somehow causes a warning from clang about an unused compilation
+        # option. Use '-lpthread' instead.
+        # TODO(earthdok): find out what's causing the warning.
+        '-pthread',
+      ],
+      'libraries': [
+        '-lc',
+        '-lgcc_s',
+        '-lpthread',
+        '-lrt',
+      ],
+    },
+  ]
+}