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cmake: Add position independent code support
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@ -63,6 +63,17 @@ list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/module)
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set(configure_warnings)
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include(CheckPIESupported)
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check_pie_supported(OUTPUT_VARIABLE check_pie_output LANGUAGES CXX)
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if(CMAKE_CXX_LINK_PIE_SUPPORTED)
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set(CMAKE_POSITION_INDEPENDENT_CODE ON)
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elseif(NOT WIN32)
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# The warning is superfluous for Windows.
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message(WARNING "PIE is not supported at link time: ${check_pie_output}")
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list(APPEND configure_warnings "Position independent code disabled.")
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endif()
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unset(check_pie_output)
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# The core_interface library aims to encapsulate common build flags.
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# It is a usage requirement for all targets except for secp256k1, which
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# gets its flags by other means.
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