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30 lines
947 B
CMake
30 lines
947 B
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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include_guard(GLOBAL)
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include(CheckCXXSourceCompiles)
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include(CMakeCheckCompilerFlagCommonPatterns)
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function(check_cxx_linker_flag _flag _var)
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if(CMAKE_VERSION VERSION_LESS "3.14")
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set(CMAKE_REQUIRED_LIBRARIES "${_flag}")
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else()
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set(CMAKE_REQUIRED_LINK_OPTIONS "${_flag}")
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endif()
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# Normalize locale during test compilation.
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set(_locale_vars LC_ALL LC_MESSAGES LANG)
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foreach(v IN LISTS _locale_vars)
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set(_locale_vars_saved_${v} "$ENV{${v}}")
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set(ENV{${v}} C)
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endforeach()
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check_compiler_flag_common_patterns(_common_patterns)
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check_cxx_source_compiles("int main() { return 0; }" ${_var}
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${_common_patterns}
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)
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foreach(v IN LISTS _locale_vars)
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set(ENV{${v}} ${_locale_vars_saved_${v}})
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endforeach()
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set(${_var} "${${_var}}" PARENT_SCOPE)
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endfunction()
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