Fix import std detection in CMake and CMake fixes for tests (#37)

Fixes: #34
Closes: #35

Author: apolukhin

.github/workflows/ci.yml

@@ -85,7 +85,7 @@ jobs:
           cd ..
           rm -rf __build
 
-      - name: Run modules tests wihtout 'import std;'
+      - name: Run modules tests without 'import std;'
         if: ${{matrix.toolset == 'clang-19'}}
         run: |
           cd ../boost-root/libs/any
@@ -218,7 +218,7 @@ jobs:
           cd ..
           rm -rf build_module
 
-      - name: Run modules tests wihtout 'import std;'
+      - name: Run modules tests without 'import std;'
         if: ${{matrix.toolset == 'msvc-14.3'}}
         shell: cmd
         run: |

CMakeLists.txt

@@ -2,19 +2,24 @@
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
 
-cmake_minimum_required( VERSION 3.5...3.31 )
+cmake_minimum_required( VERSION 3.8...3.31 )
 project( boost_any VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX )
 
 if (BOOST_USE_MODULES)
     add_library(boost_any)
     target_sources(boost_any PUBLIC
-        FILE_SET modules_public TYPE CXX_MODULES FILES
-            ${CMAKE_CURRENT_LIST_DIR}/modules/boost_any.cppm
+        FILE_SET modules_public
+            TYPE CXX_MODULES
+            FILES modules/boost_any.cppm
     )
 
     target_compile_features(boost_any PUBLIC cxx_std_20)
     target_compile_definitions(boost_any PUBLIC BOOST_USE_MODULES)
-    if (CMAKE_CXX_COMPILER_IMPORT_STD)
+    set(__boost_cxx_standard ${CMAKE_CXX_STANDARD})
+    if (NOT __boost_cxx_standard)
+        set(__boost_cxx_standard 20)
+    endif()
+    if (CMAKE_CXX_COMPILER_IMPORT_STD AND ${__boost_cxx_standard} IN_LIST CMAKE_CXX_COMPILER_IMPORT_STD)
         target_compile_definitions(boost_any PRIVATE BOOST_ANY_USE_STD_MODULE)
         message(STATUS "Using `import std;`")
     else()

test/cmake_subdir_test/CMakeLists.txt

@@ -15,7 +15,6 @@ add_subdirectory(../../../detail boostorg/detail)
 add_subdirectory(../../../integer boostorg/integer)
 add_subdirectory(../../../mp11 boostorg/mp11)
 add_subdirectory(../../../preprocessor boostorg/preprocessor)
-add_subdirectory(../../../static_assert boostorg/static_assert)
 add_subdirectory(../../../throw_exception boostorg/throw_exception)
 add_subdirectory(../../../type_index boostorg/type_index)
 add_subdirectory(../../../type_traits boostorg/type_traits)
@@ -25,7 +24,7 @@ add_subdirectory(../../ boostorg/any)
 enable_testing()
 
 if (BOOST_USE_MODULES)
-    add_executable(boost_any_module_usage ../modules/usage_sample.cpp)
+    add_executable(boost_any_module_usage ../../modules/usage_sample.cpp)
     target_link_libraries(boost_any_module_usage PRIVATE Boost::any)
     add_test(NAME boost_any_module_usage COMMAND boost_any_module_usage)
 endif()
@@ -50,7 +49,7 @@ list(APPEND RUN_TESTS_SOURCES
 foreach (testsourcefile ${RUN_TESTS_SOURCES})
     get_filename_component(testname ${testsourcefile} NAME_WLE)
     add_executable(${PROJECT_NAME}_${testname} ../${testsourcefile})
-    target_link_libraries(${PROJECT_NAME}_${testname} Boost::any)
+    target_link_libraries(${PROJECT_NAME}_${testname} Boost::any Boost::core)
     add_test(NAME ${PROJECT_NAME}_${testname} COMMAND ${PROJECT_NAME}_${testname})
 endforeach()