CMake: Refactor compilation tests

test/integration/compilation/CMakeLists.txt

@@ -5,28 +5,31 @@
 # This CMake script creates multiple additional targets to test the compilation of public headers
 # with different C and C++ standards.
 
+list(APPEND all_features ${CMAKE_CXX_COMPILE_FEATURES})
+list(APPEND all_features ${CMAKE_C_COMPILE_FEATURES})
+
+# Disable standard extensions globally for test targets.
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_C_EXTENSIONS OFF)
+
 macro(create_compilation_test STANDARD)
-    if (${STANDARD} MATCHES "^(C|CXX)([0-9]+)$")
+    if (${STANDARD} MATCHES "^(c|cxx)_std_([0-9]+)$")
         set(lang ${CMAKE_MATCH_1})
         set(num ${CMAKE_MATCH_2})
     else()
-        message(FATAL_ERROR "Unknown language standard: ${STANDARD}")
+        message(FATAL_ERROR "Unknown standard: ${STANDARD}")
     endif()
 
-    if (lang STREQUAL CXX)
-        set(ext cpp)
+    if(${STANDARD} IN_LIST all_features)
+        set(target test-compile-${STANDARD})
+        add_library(${target} OBJECT compilation_test.${lang})
+        target_compile_features(${target} PRIVATE ${STANDARD})
+        target_include_directories(${target} PRIVATE ${include_dir})
     else()
-        set(ext c)
+        message(STATUS "Compilation test SKIPPED: ${STANDARD}")
     endif()
-
-    string(TOLOWER ${STANDARD} standard)
-    set(target test-compile-${standard})
-
-    add_library(${target} OBJECT compilation_test.${ext})
-    target_include_directories(${target} PRIVATE ${include_dir})
-    set_target_properties(${target} PROPERTIES ${lang}_STANDARD ${num} ${lang}_EXTENSIONS OFF)
 endmacro()
 
-foreach(standard C90;C99;C11;CXX11;CXX14;CXX17)
+foreach(standard cxx_std_11;cxx_std_14;cxx_std_17;c_std_90;c_std_99;c_std_11)
     create_compilation_test(${standard})
 endforeach()