Esun Kim dc65036957 [C++] Transition to C++17 (CMake) (#38335) ...

CMake needs following two changes which were missed part from https://github.com/grpc/grpc/pull/37919 to make CMake use C++17.
- **Explicitly require C++17 for gRPC targets using `cxx_std_17`**: This ensures that gRPC build targets are built with the correct C++17 support.
- **Enforce C++17 for all CMake invocations using `CMAKE_CXX_STANDARD=17`**: This is necessary due to Abseil's API changes depending on the C++ standard used. (e.g. Abseil's `absl::string_view` is implemented differently depending on the C++ standard. Before C++17, it's a distinct type. From C++17 onwards, it's simply an alias for `std::string_view`.) To maintain consistency and avoid build errors, all CMake builds (except particular build tests targetting C++20 or C++23) are now configured to use C++17.

The requirement of C++17 for building gRPC should be documented in the release notes and build instructions.

Closes #38335

PiperOrigin-RevId: 712926964

2025-01-07 08:48:11 -08:00

..

common.cmake

[C++] Transition to C++17 (CMake) (#38335)

2025-01-07 08:48:11 -08:00