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146
Framework/external/embree/common/cmake/clang.cmake
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146
Framework/external/embree/common/cmake/clang.cmake
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## Copyright 2009-2021 Intel Corporation
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## SPDX-License-Identifier: Apache-2.0
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MACRO(_SET_IF_EMPTY VAR VALUE)
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IF(NOT ${VAR})
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SET(${VAR} "${VALUE}")
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ENDIF()
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ENDMACRO()
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IF (EMBREE_ARM)
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SET(FLAGS_SSE2 "-D__SSE__ -D__SSE2__")
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SET(FLAGS_SSE42 "-D__SSE4_2__ -D__SSE4_1__")
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SET(FLAGS_AVX "-D__AVX__ -D__SSE4_2__ -D__SSE4_1__ -D__BMI__ -D__BMI2__ -D__LZCNT__")
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SET(FLAGS_AVX2 "-D__AVX2__ -D__AVX__ -D__SSE4_2__ -D__SSE4_1__ -D__BMI__ -D__BMI2__ -D__LZCNT__")
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ELSE ()
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# for `thread` keyword
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_SET_IF_EMPTY(FLAGS_SSE2 "-msse -msse2 -mno-sse4.2")
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_SET_IF_EMPTY(FLAGS_SSE42 "-msse4.2")
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_SET_IF_EMPTY(FLAGS_AVX "-mavx")
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_SET_IF_EMPTY(FLAGS_AVX2 "-mf16c -mavx2 -mfma -mlzcnt -mbmi -mbmi2")
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_SET_IF_EMPTY(FLAGS_AVX512 "-march=skx")
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ENDIF ()
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IF (WIN32)
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SET(COMMON_CXX_FLAGS "")
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /EHsc") # catch C++ exceptions only and extern "C" functions never throw a C++ exception
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# SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /MP") # compile source files in parallel
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /GR") # enable runtime type information (on by default)
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -Xclang -fcxx-exceptions") # enable C++ exceptions in Clang
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /w") # disable all warnings
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /Gy") # package individual functions
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IF (EMBREE_STACK_PROTECTOR)
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /GS") # protects against return address overrides
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ELSE()
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SET(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} /GS-") # do not protect against return address overrides
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ENDIF()
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MACRO(DISABLE_STACK_PROTECTOR_FOR_FILE file)
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IF (EMBREE_STACK_PROTECTOR)
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SET_SOURCE_FILES_PROPERTIES(${file} PROPERTIES COMPILE_FLAGS "/GS-")
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ENDIF()
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ENDMACRO()
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${COMMON_CXX_FLAGS}")
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /DDEBUG") # enables assertions
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /DTBB_USE_DEBUG") # configures TBB in debug mode
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Ox") # enable full optimizations
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Oi") # inline intrinsic functions
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SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} /DEBUG") # generate debug information
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SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} /DEBUG") # generate debug information
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SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${COMMON_CXX_FLAGS}")
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SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ox") # enable full optimizations
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SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Oi") # inline intrinsic functions
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} ${COMMON_CXX_FLAGS}")
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Ox") # enable full optimizations
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Oi") # inline intrinsic functions
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SET(CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO} /DEBUG") # generate debug information
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SET(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO} /DEBUG") # generate debug information
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SET(SECURE_LINKER_FLAGS "")
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SET(SECURE_LINKER_FLAGS "${SECURE_LINKER_FLAGS} /NXCompat") # compatible with data execution prevention (on by default)
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SET(SECURE_LINKER_FLAGS "${SECURE_LINKER_FLAGS} /DynamicBase") # random rebase of executable at load time
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IF (CMAKE_SIZEOF_VOID_P EQUAL 4)
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SET(SECURE_LINKER_FLAGS "${SECURE_LINKER_FLAGS} /SafeSEH") # invoke known exception handlers (Win32 only, x64 exception handlers are safe by design)
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ENDIF()
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SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${SECURE_LINKER_FLAGS}")
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${SECURE_LINKER_FLAGS}")
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INCLUDE(msvc_post)
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ELSE()
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OPTION(EMBREE_IGNORE_CMAKE_CXX_FLAGS "When enabled Embree ignores default CMAKE_CXX_FLAGS." ON)
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OPTION(EMBREE_ADDRESS_SANITIZER "Enabled CLANG address sanitizer." OFF)
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IF (EMBREE_IGNORE_CMAKE_CXX_FLAGS)
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SET(CMAKE_CXX_FLAGS "")
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ENDIF()
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall") # enables most warnings
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wformat -Wformat-security") # enables string format vulnerability warnings
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsigned-char") # treat char as signed on all processors, including ARM
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IF (NOT APPLE)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIE") # enables support for more secure position independent execution
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ENDIF()
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") # generate position independent code suitable for shared libraries
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC") # generate position independent code suitable for shared libraries
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") # enables C++11 features
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") # makes all symbols hidden by default
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility-inlines-hidden") # makes all inline symbols hidden by default
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing") # disables strict aliasing rules
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-tree-vectorize") # disable auto vectorizer
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_FORTIFY_SOURCE=2") # perform extra security checks for some standard library calls
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IF (EMBREE_STACK_PROTECTOR)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstack-protector") # protects against return address overrides
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ENDIF()
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MACRO(DISABLE_STACK_PROTECTOR_FOR_FILE file)
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IF (EMBREE_STACK_PROTECTOR)
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SET_SOURCE_FILES_PROPERTIES(${file} PROPERTIES COMPILE_FLAGS "-fno-stack-protector")
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ENDIF()
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ENDMACRO()
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IF (EMBREE_ADDRESS_SANITIZER)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer -fno-optimize-sibling-calls")
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ENDIF()
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IF (EMSCRIPTEN)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions") # enable exceptions
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread") # enable threads
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msimd128") # enable SIMD intrinsics
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ENDIF()
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SET(CMAKE_CXX_FLAGS_DEBUG "")
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g") # generate debug information
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG") # enable assertions
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DTBB_USE_DEBUG") # configure TBB in debug mode
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SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O3") # enable full optimizations
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SET(CMAKE_CXX_FLAGS_RELEASE "")
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SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNDEBUG") # disable assertions
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SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3") # enable full optimizations
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "")
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -g") # generate debug information
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -DNDEBUG") # disable assertions
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SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -O3") # enable full optimizations
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IF (APPLE)
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.7") # makes sure code runs on older MacOSX versions
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++") # link against libc++ which supports C++11 features
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ELSE(APPLE)
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IF (NOT EMBREE_ADDRESS_SANITIZER) # for address sanitizer this causes link errors
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--no-undefined") # issues link error for undefined symbols in shared library
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SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pie") # enables position independent execution for executable
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IF (NOT EMSCRIPTEN)
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -z relro -z now") # re-arranges data sections to increase security
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SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -z noexecstack") # we do not need an executable stack
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SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -z relro -z now") # re-arranges data sections to increase security
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SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -z noexecstack") # we do not need an executable stack
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ENDIF()
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ENDIF()
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ENDIF(APPLE)
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ENDIF()
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