This directory contains the following C++ client libraries:

• Cloud Bigtable
• Google Cloud Storage

In addition some utilities shared across these libraries are also found here. Most of these utilities are in the google::cloud::internal namespace, and are not intended for direct use by consumers of the C++ client libraries.

Documentation for the common utilities is available online.

• feat: Use macros for compiler id and version (#2937)
• fix: Fix bazel build on windows. (#2940)
• chore: Keep release tags in master branch. (#2963)
• cleanup: Use only find_package to find dependencies. (#2967)
• feat: Add ability to disable building libraries (#3025)
• bug: fix builds with CMake 3.15 (#3033)
• feat: Document behavior of passing empty string to SetEnv on Windows (#3030)

• feat: add conjunction metafunction (#2892)
• bug: Fix typo in testing_util/config.cmake.in (#2851)
• bug: Include 'IncludeGMock.cmake' in testing_util/config.cmake.in (#2848)

• feature: support operator== and operator!= for StatusOr.
• feature: support assignment from Status in StatusOr.
• feature: disable optional<T>'s converting constructor when U == optional<T>.

• Support move-only callables in future<T>
• Avoid std::make_exception_ptr() in future_shared_state_base::abandon().

• Avoid std::make_exception_ptr() when building without exceptions.
• Removed the googleapis submodule. The build system now automatically downloads all deps.

• Breaking change: Make google::cloud::optional::operator bool() explicit.
• Add google::cloud::optional value conversions that match std::optional.
• Stop using grpc's DO_NOT_USE enum.
• Remove ciso646 includes to force traditional spellings.
• Change std::endl -> "\n".
• Enforce formatting of .cc files.

• Fixed some documentation.
• Breaking change: Removed StatusOr<void>.
• Updated StatusOr documentation.
• Fixed some (minor) issues found by coverity.

• Support compiling with gcc-4.8.
• Fix GCP_LOG() macro so it works on platforms that define a DEBUG pre-processor symbol.
• Use different PRNG sequences for each backoff instance, previously all the clones of a backoff policy shared the same sequence.
• Workaround build problems with Xcode 7.3.

• Implement google::cloud::future<T> and google::cloud::promise<T> based on ISO/IEC TS 19571:2016, the "C++ Extensions for Concurrency" technical specification, also known as "futures with continuations".

• google::cloud::optional<T> an intentionally incomplete implementation of std::optional<T> to support C++11 and C++14 users.
• Applications can configure google::cloud::LogSink to enable logging in some of the libraries and to redirect the logs to their preferred destination. The libraries do not enable any logging by default, not even to stderr.
• google::cloud::SetTerminateHandler() allows applications compiled without exceptions, but using the APIs that rely on exceptions to report errors, to configure how the application terminates when an unrecoverable error is detected by the libraries.