abseil-cpp

# Abseil - C++ Common Libraries

The repository contains the Abseil C++ library code. Abseil is an open-source
collection of C++ code (compliant to C++17) designed to augment the C++
standard library.

## Table of Contents

- [About Abseil](#about)
- [Quickstart](#quickstart)
- [Building Abseil](#build)
- [Support](#support)
- [Codemap](#codemap)
- [Releases](#releases)
- [License](#license)
- [Links](#links)

<a name="about"></a>
## About Abseil

Abseil is an open-source collection of C++ library code designed to augment
the C++ standard library. The Abseil library code is collected from Google's
own C++ code base, has been extensively tested and used in production, and
is the same code we depend on in our daily coding lives.

In some cases, Abseil provides pieces missing from the C++ standard; in
others, Abseil provides alternatives to the standard for special needs
we've found through usage in the Google code base. We denote those cases
clearly within the library code we provide you.

Abseil is not meant to be a competitor to the standard library; we've
just found that many of these utilities serve a purpose within our code
base, and we now want to provide those resources to the C++ community as
a whole.

<a name="quickstart"></a>
## Quickstart

If you want to just get started, make sure you at least run through the
[Abseil Quickstart](https://abseil.io/docs/cpp/quickstart). The Quickstart
contains information about setting up your development environment, downloading
the Abseil code, running tests, and getting a simple binary working.

<a name="build"></a>
## Building Abseil

[Bazel](https://bazel.build) and [CMake](https://cmake.org/) are the official
build systems for Abseil.
See the [quickstart](https://abseil.io/docs/cpp/quickstart) for more information
on building Abseil using the Bazel build system.
If you require CMake support, please check the [CMake build
instructions](CMake/README.md) and [CMake
Quickstart](https://abseil.io/docs/cpp/quickstart-cmake).

<a name="support"></a>
## Support

Abseil follows Google's [Foundational C++ Support
Policy](https://opensource.google/documentation/policies/cplusplus-support). See
[this
table](https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md)
for a list of currently supported versions compilers, platforms, and build
tools.

<a name="codemap"></a>
## Codemap

Abseil contains the following C++ library components:

* [`base`](absl/base/)
  <br /> The `base` library contains initialization code and other code which
  all other Abseil code depends on. Code within `base` may not depend on any
  other code (other than the C++ standard library).
* [`algorithm`](absl/algorithm/)
  <br /> The `algorithm` library contains additions to the C++ `<algorithm>`
  library and container-based versions of such algorithms.
* [`cleanup`](absl/cleanup/)
  <br /> The `cleanup` library contains the control-flow-construct-like type
  `absl::Cleanup` which is used for executing a cal