meson.build: switch to C++23

Author: MaxKellermann

NEWS

@@ -1,4 +1,5 @@
 ncmpc 0.53 - not yet released
+* switch to C++23
 * build: require Meson 1.2
 
 ncmpc 0.52 - (2025-02-17)

README.rst

@@ -13,7 +13,7 @@ How to compile and install ncmpc
 
 You need:
 
-- a C++20 compliant compiler (e.g. gcc or clang)
+- a C++23 compliant compiler (e.g. gcc or clang)
 - `libfmt <https://fmt.dev/>`__
 - `libmpdclient <https://www.musicpd.org/libs/libmpdclient/>`__ 2.16
 - `ncurses <https://www.gnu.org/software/ncurses/>`__

meson.build

@@ -4,9 +4,12 @@ project(
   version: '0.53',
   meson_version: '>= 1.2',
   default_options: [
-    'cpp_std=c++20',
+    'cpp_std=c++23',
+    'build.cpp_std=c++23',
     'warning_level=3',
 
+    'fmt:cpp_std=c++23',
+
     # If we build libmpdclient, it should be linked statically into
     # our executable.
     'libmpdclient:default_library=static',