We need at least cmake v3.28!

Author: ClausKlein

.github/workflows/ci_tests.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Setup build environment
         uses: lukka/get-cmake@latest
         with:
-          cmakeVersion: "~3.25.0"
+          cmakeVersion: "~3.28.0"
           ninjaVersion: "^1.11.1"
       - name: Setup MSVC
         if: startsWith(matrix.presets.platform, 'windows')
@@ -80,7 +80,7 @@ jobs:
       - name: Install Ninja
         uses: lukka/get-cmake@latest
         with:
-          cmakeVersion: "~3.25.0"
+          cmakeVersion: "~4.0.0"
           ninjaVersion: "^1.11.1"
       - name: Setup MSVC
         if: startsWith(matrix.platform.os, 'windows')
@@ -139,7 +139,7 @@ jobs:
       - name: Setup build environment
         uses: lukka/get-cmake@latest
         with:
-          cmakeVersion: "~3.25.0"
+          cmakeVersion: "~3.28.0"
           ninjaVersion: "^1.11.1"
       - name: Print installed softwares
         run: |
@@ -166,10 +166,10 @@ jobs:
       matrix:
         compilers:
           - class: GNU
-            version: 14
+            version: 15
             toolchain: "cmake/gnu-toolchain.cmake"
           - class: GNU
-            version: 13
+            version: 14
             toolchain: "cmake/gnu-toolchain.cmake"
           - class: LLVM
             version: 20
@@ -183,7 +183,7 @@ jobs:
       - name: Setup build environment
         uses: lukka/get-cmake@latest
         with:
-          cmakeVersion: "~3.25.0"
+          cmakeVersion: "~4.0.0"
           ninjaVersion: "^1.11.1"
       - name: Install Compiler
         id: install-compiler

CMakeLists.txt

@@ -8,7 +8,7 @@ if(CMAKE_CXX_MODULE_STD)
     set(CMAKE_CXX_STANDARD_REQUIRED OFF)
 endif()
 
-cmake_minimum_required(VERSION 3.25...4.0)
+cmake_minimum_required(VERSION 3.28...4.0)
 
 project(
     beman.scope
@@ -41,7 +41,7 @@ option(
 
 add_library(beman.scope)
 add_library(beman::scope ALIAS beman.scope)
-target_compile_features(beman.scope PRIVATE cxx_std_23)
+target_compile_features(beman.scope PRIVATE cxx_std_20)
 
 # gersemi: off
 

tests/CMakeLists.txt

@@ -7,7 +7,7 @@ FetchContent_Declare(
     GIT_REPOSITORY https://github.com/catchorg/Catch2.git
     GIT_TAG v3.8.0
     SYSTEM
-    # MABY: FIND_PACKAGE_ARGS 3.8.0
+    # MAYBY: FIND_PACKAGE_ARGS 3.8.0
 )
 FetchContent_MakeAvailable(Catch2)
 
@@ -19,11 +19,12 @@ include(Catch)
 
 add_executable(test.module)
 target_sources(test.module PRIVATE module.test.cpp)
-target_compile_features(test.module PRIVATE cxx_std_23)
-add_test(NAME test.module COMMAND test.module)
+# MAYBE: target_compile_features(test.module PRIVATE cxx_std_23)
 target_link_libraries(test.module PRIVATE beman::scope)
 
-# XXX target_compile_options(test.module PRIVATE "-fmodules")
+add_test(NAME test.module COMMAND test.module)
+
+# XXX NO! target_compile_options(test.module PRIVATE "-fmodules")
 # target_link_libraries(
 #     test.module
 #     PUBLIC FILE_SET TYPE CXX_MODULES include/beman/scope/beman.scope.cppm