README.md: replace C++17 with C++23

in 5d3ee98, we dropped the support of C++17 in our CI and building system. but README.md was not updated. so in this change, let's update it accordingly. Signed-off-by: Kefu Chai <[email protected]>
tchaikov · May 19, 2024 · c69159a · c69159a
1 parent a7fb8ff
commit c69159a
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -144,11 +144,11 @@ There are also instructions for building on any host that supports [Docker](doc/
 
 Use of the [DPDK](http://dpdk.org) is [optional](doc/building-dpdk.md).
 
-#### Seastar's C++ standard: C++17 or C++20
+#### Seastar's C++ standard: C++20 or C++23
 
-Seastar supports both C++17, and C++20. The build defaults to the latest
+Seastar supports both C++20, and C++23. The build defaults to the latest
 standard supported by your compiler, but can be explicitly selected with
-the `--c++-standard` configure option, e.g., `--c++-standard=17`,
+the `--c++-standard` configure option, e.g., `--c++-standard=20`,
 or if using CMake directly, by setting on the `CMAKE_CXX_STANDARD` CMake
 variable.