17 lines
612 B
CMake
17 lines
612 B
CMake
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include(CheckSymbolExists)
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function(detect_architecture symbol arch)
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if (NOT DEFINED ARCHITECTURE)
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set(CMAKE_REQUIRED_QUIET 1)
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check_symbol_exists("${symbol}" "" ARCHITECTURE_${arch})
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unset(CMAKE_REQUIRED_QUIET)
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# The output variable needs to be unique across invocations otherwise
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# CMake's crazy scope rules will keep it defined
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if (ARCHITECTURE_${arch})
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set(ARCHITECTURE "${arch}" PARENT_SCOPE)
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set(ARCHITECTURE_${arch} 1 PARENT_SCOPE)
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add_definitions(-DARCHITECTURE_${arch}=1)
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endif()
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endif()
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endfunction()
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