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https://gitlab.kitware.com/cmake/cmake.git
synced 2026-10-01 04:03:24 +03:00
Josef Šimánek
fd6f2555d4
Commit a72e241200 (Check*: Restore more toleration of `;-W...` in
CMAKE_REQUIRED_FLAGS, 2026-07-21) updated the Check* modules to share
required-flag handling without adding coverage for those paths.
Exercise each probe with required definitions followed by a warning
option.
Without the compatibility handling, CMake rejects the warning option.
Without the required definitions, all seven checks fail to find their
header, functions, prototype, or type.
Issue: #28001
45 lines
1.5 KiB
CMake
45 lines
1.5 KiB
CMake
enable_language(C)
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enable_language(CXX)
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# Warning options after the first entry are ignored for compatibility.
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set(CMAKE_REQUIRED_FLAGS
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"-DCHECK_REQUIRED_FLAGS -Drequired_flag_function=memcpy -Drequired_flag_library=memcpy -Drequired_flag_type=int"
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"-Wseen-by-cmake")
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set(CMAKE_REQUIRED_INCLUDES "${CMAKE_CURRENT_LIST_DIR}")
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include(CheckFunctionExists)
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include(CheckIncludeFile)
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include(CheckIncludeFileCXX)
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include(CheckIncludeFiles)
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include(CheckLibraryExists)
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include(CheckPrototypeDefinition)
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include(CheckTypeSize)
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check_function_exists(required_flag_function CHECK_FUNCTION_EXISTS_RESULT)
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check_include_file(CheckRequiredFlags.h CHECK_INCLUDE_FILE_RESULT)
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check_include_file_cxx(CheckRequiredFlags.h CHECK_INCLUDE_FILE_CXX_RESULT)
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check_include_files("stddef.h;CheckRequiredFlags.h" CHECK_INCLUDE_FILES_RESULT)
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check_library_exists("" required_flag_library "" CHECK_LIBRARY_EXISTS_RESULT)
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check_prototype_definition(
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required_flag_prototype
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"int required_flag_prototype(int value)"
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"value"
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"CheckRequiredFlags.h"
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CHECK_PROTOTYPE_DEFINITION_RESULT
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)
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check_type_size(required_flag_type CHECK_TYPE_SIZE_RESULT)
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foreach(result IN ITEMS
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CHECK_FUNCTION_EXISTS_RESULT
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CHECK_INCLUDE_FILE_RESULT
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CHECK_INCLUDE_FILE_CXX_RESULT
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CHECK_INCLUDE_FILES_RESULT
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CHECK_LIBRARY_EXISTS_RESULT
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CHECK_PROTOTYPE_DEFINITION_RESULT
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CHECK_TYPE_SIZE_RESULT
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)
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if(NOT ${result})
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message(SEND_ERROR "${result} did not honor CMAKE_REQUIRED_FLAGS")
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endif()
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endforeach()
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