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AUTHORSD03-May-2024295 76

BUILD.bazelD03-May-2024781 2622

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README.chromiumD03-May-20241.3 KiB3827

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generate_def_files.pyD03-May-20246.9 KiB178124

roll_abseil.pyD03-May-20244.2 KiB13198

symbols_arm64_dbg.defD03-May-2024472.1 KiB3,3523,351

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symbols_x86_dbg.defD03-May-2024462.9 KiB3,3463,345

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README.chromium

1Name: Abseil
2Short Name: absl
3URL: https://github.com/abseil/abseil-cpp
4License: Apache 2.0
5License File: LICENSE
6Version: 0
7Revision: 6f43f5bb398b6685575b36874e36cf1695734df1
8Security Critical: yes
9
10Description:
11This directory contains the source code of Abseil for C++. This can be used by
12Chromium, subject to the guidance at
13https://chromium.googlesource.com/chromium/src/+/main/styleguide/c++/c++-features.md;
14it can be used without restriction by Chromium's dependencies, except that
15objects compiled into Chromium itself cannot use anything relying on
16absl::base_internal::FastTypeId (see https://crbug.com/1096380).
17
18How to update Abseil:
19
201. Download the code from the Abseil git repository (see URL).
21
222. Copy the content of the Abseil git repo to //third_party/abseil-cpp.
23
243. From your source root run third_party/abseil-cpp/generate_def_files.py to
25   regenerate Windows symbol definition files.
26
27Local Modifications:
28
29* absl/copts.bzl has been translated to //third_party/absl-cpp/BUILD.gn. Both
30  files contain lists of compiler flags in order to reduce duplication.
31
32* All the BUILD.bazel files have been translated to BUILD.gn files.
33
34* Patches from //third_party/abseil-cpp/patches have been applied.
35
36* Increment this number to silence presubmits about modifying files in
37  third_party when regenerating absl .def files: 2
38

README.md

1# Abseil - C++ Common Libraries
2
3The repository contains the Abseil C++ library code. Abseil is an open-source
4collection of C++ code (compliant to C++11) designed to augment the C++
5standard library.
6
7## Table of Contents
8
9- [About Abseil](#about)
10- [Quickstart](#quickstart)
11- [Building Abseil](#build)
12- [Support](#support)
13- [Codemap](#codemap)
14- [Releases](#releases)
15- [License](#license)
16- [Links](#links)
17
18<a name="about"></a>
19## About Abseil
20
21Abseil is an open-source collection of C++ library code designed to augment
22the C++ standard library. The Abseil library code is collected from Google's
23own C++ code base, has been extensively tested and used in production, and
24is the same code we depend on in our daily coding lives.
25
26In some cases, Abseil provides pieces missing from the C++ standard; in
27others, Abseil provides alternatives to the standard for special needs
28we've found through usage in the Google code base. We denote those cases
29clearly within the library code we provide you.
30
31Abseil is not meant to be a competitor to the standard library; we've
32just found that many of these utilities serve a purpose within our code
33base, and we now want to provide those resources to the C++ community as
34a whole.
35
36<a name="quickstart"></a>
37## Quickstart
38
39If you want to just get started, make sure you at least run through the
40[Abseil Quickstart](https://abseil.io/docs/cpp/quickstart). The Quickstart
41contains information about setting up your development environment, downloading
42the Abseil code, running tests, and getting a simple binary working.
43
44<a name="build"></a>
45## Building Abseil
46
47[Bazel](https://bazel.build) and [CMake](https://cmake.org/) are the official
48build systems for Abseil.
49
50See the [quickstart](https://abseil.io/docs/cpp/quickstart) for more information
51on building Abseil using the Bazel build system.
52
53If you require CMake support, please check the [CMake build
54instructions](CMake/README.md) and [CMake
55Quickstart](https://abseil.io/docs/cpp/quickstart-cmake).
56
57## Support
58
59Abseil is officially supported on many platforms. See the [Abseil
60platform support
61guide](https://abseil.io/docs/cpp/platforms/platforms) for details on
62supported operating systems, compilers, CPUs, etc.
63
64## Codemap
65
66Abseil contains the following C++ library components:
67
68* [`base`](absl/base/) Abseil Fundamentals
69  <br /> The `base` library contains initialization code and other code which
70  all other Abseil code depends on. Code within `base` may not depend on any
71  other code (other than the C++ standard library).
72* [`algorithm`](absl/algorithm/)
73  <br /> The `algorithm` library contains additions to the C++ `<algorithm>`
74  library and container-based versions of such algorithms.
75* [`cleanup`](absl/cleanup/)
76  <br /> The `cleanup` library contains the control-flow-construct-like type
77  `absl::Cleanup` which is used for executing a callback on scope exit.
78* [`container`](absl/container/)
79  <br /> The `container` library contains additional STL-style containers,
80  including Abseil's unordered "Swiss table" containers.
81* [`debugging`](absl/debugging/)
82  <br /> The `debugging` library contains code useful for enabling leak
83  checks, and stacktrace and symbolization utilities.
84* [`hash`](absl/hash/)
85  <br /> The `hash` library contains the hashing framework and default hash
86  functor implementations for hashable types in Abseil.
87* [`memory`](absl/memory/)
88  <br /> The `memory` library contains C++11-compatible versions of
89  `std::make_unique()` and related memory management facilities.
90* [`meta`](absl/meta/)
91  <br /> The `meta` library contains C++11-compatible versions of type checks
92  available within C++14 and C++17 versions of the C++ `<type_traits>` library.
93* [`numeric`](absl/numeric/)
94  <br /> The `numeric` library contains C++11-compatible 128-bit integers.
95* [`profiling`](absl/profiling/)
96  <br /> The `profiling` library contains utility code for profiling C++
97  entities.  It is currently a private dependency of other Abseil libraries.
98* [`status`](absl/status/)
99  <br /> The `status` contains abstractions for error handling, specifically
100  `absl::Status` and `absl::StatusOr<T>`.
101* [`strings`](absl/strings/)
102  <br /> The `strings` library contains a variety of strings routines and
103  utilities, including a C++11-compatible version of the C++17
104  `std::string_view` type.
105* [`synchronization`](absl/synchronization/)
106  <br /> The `synchronization` library contains concurrency primitives (Abseil's
107  `absl::Mutex` class, an alternative to `std::mutex`) and a variety of
108  synchronization abstractions.
109* [`time`](absl/time/)
110  <br /> The `time` library contains abstractions for computing with absolute
111  points in time, durations of time, and formatting and parsing time within
112  time zones.
113* [`types`](absl/types/)
114  <br /> The `types` library contains non-container utility types, like a
115  C++11-compatible version of the C++17 `std::optional` type.
116* [`utility`](absl/utility/)
117  <br /> The `utility` library contains utility and helper code.
118
119## Releases
120
121Abseil recommends users "live-at-head" (update to the latest commit from the
122master branch as often as possible). However, we realize this philosophy doesn't
123work for every project, so we also provide [Long Term Support
124Releases](https://github.com/abseil/abseil-cpp/releases) to which we backport
125fixes for severe bugs. See our [release
126management](https://abseil.io/about/releases) document for more details.
127
128## License
129
130The Abseil C++ library is licensed under the terms of the Apache
131license. See [LICENSE](LICENSE) for more information.
132
133## Links
134
135For more information about Abseil:
136
137* Consult our [Abseil Introduction](https://abseil.io/about/intro)
138* Read [Why Adopt Abseil](https://abseil.io/about/philosophy) to understand our
139  design philosophy.
140* Peruse our
141  [Abseil Compatibility Guarantees](https://abseil.io/about/compatibility) to
142  understand both what we promise to you, and what we expect of you in return.
143