forked from OSchip/llvm-project
814 lines
34 KiB
CMake
814 lines
34 KiB
CMake
# This CMake module is responsible for interpreting the user defined LLVM_
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# options and executing the appropriate CMake commands to realize the users'
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# selections.
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# This is commonly needed so make sure it's defined before we include anything
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# else.
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string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
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include(CheckCompilerVersion)
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include(HandleLLVMStdlib)
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include(CheckCCompilerFlag)
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include(CheckCXXCompilerFlag)
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if(CMAKE_LINKER MATCHES "lld-link.exe" OR (WIN32 AND LLVM_USE_LINKER STREQUAL "lld"))
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set(LINKER_IS_LLD_LINK TRUE)
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else()
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set(LINKER_IS_LLD_LINK FALSE)
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endif()
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set(LLVM_ENABLE_LTO OFF CACHE STRING "Build LLVM with LTO. May be specified as Thin or Full to use a particular kind of LTO")
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string(TOUPPER "${LLVM_ENABLE_LTO}" uppercase_LLVM_ENABLE_LTO)
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# Ninja Job Pool support
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# The following only works with the Ninja generator in CMake >= 3.0.
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set(LLVM_PARALLEL_COMPILE_JOBS "" CACHE STRING
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"Define the maximum number of concurrent compilation jobs.")
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if(LLVM_PARALLEL_COMPILE_JOBS)
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if(NOT CMAKE_MAKE_PROGRAM MATCHES "ninja")
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message(WARNING "Job pooling is only available with Ninja generators.")
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else()
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set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${LLVM_PARALLEL_COMPILE_JOBS})
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set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
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endif()
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endif()
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set(LLVM_PARALLEL_LINK_JOBS "" CACHE STRING
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"Define the maximum number of concurrent link jobs.")
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if(CMAKE_MAKE_PROGRAM MATCHES "ninja")
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if(NOT LLVM_PARALLEL_LINK_JOBS AND uppercase_LLVM_ENABLE_LTO STREQUAL "THIN")
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message(STATUS "ThinLTO provides its own parallel linking - limiting parallel link jobs to 2.")
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set(LLVM_PARALLEL_LINK_JOBS "2")
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endif()
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if(LLVM_PARALLEL_LINK_JOBS)
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set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${LLVM_PARALLEL_LINK_JOBS})
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set(CMAKE_JOB_POOL_LINK link_job_pool)
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endif()
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elseif(LLVM_PARALLEL_LINK_JOBS)
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message(WARNING "Job pooling is only available with Ninja generators.")
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endif()
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if (LINKER_IS_LLD_LINK)
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# Pass /MANIFEST:NO so that CMake doesn't run mt.exe on our binaries. Adding
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# manifests with mt.exe breaks LLD's symbol tables and takes as much time as
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# the link. See PR24476.
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append("/MANIFEST:NO"
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CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
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endif()
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if( LLVM_ENABLE_ASSERTIONS )
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# MSVC doesn't like _DEBUG on release builds. See PR 4379.
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if( NOT MSVC )
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add_definitions( -D_DEBUG )
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endif()
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# On non-Debug builds cmake automatically defines NDEBUG, so we
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# explicitly undefine it:
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if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
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add_definitions( -UNDEBUG )
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# Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines.
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foreach (flags_var_to_scrub
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CMAKE_CXX_FLAGS_RELEASE
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CMAKE_CXX_FLAGS_RELWITHDEBINFO
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CMAKE_CXX_FLAGS_MINSIZEREL
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CMAKE_C_FLAGS_RELEASE
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CMAKE_C_FLAGS_RELWITHDEBINFO
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CMAKE_C_FLAGS_MINSIZEREL)
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string (REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" " "
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"${flags_var_to_scrub}" "${${flags_var_to_scrub}}")
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endforeach()
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endif()
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endif()
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if(LLVM_ENABLE_EXPENSIVE_CHECKS)
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add_definitions(-DEXPENSIVE_CHECKS)
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add_definitions(-D_GLIBCXX_DEBUG)
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endif()
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string(TOUPPER "${LLVM_ABI_BREAKING_CHECKS}" uppercase_LLVM_ABI_BREAKING_CHECKS)
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if( uppercase_LLVM_ABI_BREAKING_CHECKS STREQUAL "WITH_ASSERTS" )
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if( LLVM_ENABLE_ASSERTIONS )
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set( LLVM_ENABLE_ABI_BREAKING_CHECKS 1 )
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endif()
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elseif( uppercase_LLVM_ABI_BREAKING_CHECKS STREQUAL "FORCE_ON" )
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set( LLVM_ENABLE_ABI_BREAKING_CHECKS 1 )
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elseif( uppercase_LLVM_ABI_BREAKING_CHECKS STREQUAL "FORCE_OFF" )
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# We don't need to do anything special to turn off ABI breaking checks.
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elseif( NOT DEFINED LLVM_ABI_BREAKING_CHECKS )
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# Treat LLVM_ABI_BREAKING_CHECKS like "FORCE_OFF" when it has not been
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# defined.
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else()
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message(FATAL_ERROR "Unknown value for LLVM_ABI_BREAKING_CHECKS: \"${LLVM_ABI_BREAKING_CHECKS}\"!")
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endif()
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if( LLVM_REVERSE_ITERATION )
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set( LLVM_ENABLE_REVERSE_ITERATION 1 )
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endif()
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if(WIN32)
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set(LLVM_HAVE_LINK_VERSION_SCRIPT 0)
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if(CYGWIN)
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set(LLVM_ON_WIN32 0)
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set(LLVM_ON_UNIX 1)
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else(CYGWIN)
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set(LLVM_ON_WIN32 1)
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set(LLVM_ON_UNIX 0)
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endif(CYGWIN)
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else(WIN32)
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if(UNIX)
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set(LLVM_ON_WIN32 0)
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set(LLVM_ON_UNIX 1)
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if(APPLE OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
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set(LLVM_HAVE_LINK_VERSION_SCRIPT 0)
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else()
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set(LLVM_HAVE_LINK_VERSION_SCRIPT 1)
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endif()
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else(UNIX)
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MESSAGE(SEND_ERROR "Unable to determine platform")
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endif(UNIX)
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endif(WIN32)
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set(EXEEXT ${CMAKE_EXECUTABLE_SUFFIX})
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set(LTDL_SHLIB_EXT ${CMAKE_SHARED_LIBRARY_SUFFIX})
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# We use *.dylib rather than *.so on darwin.
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set(LLVM_PLUGIN_EXT ${CMAKE_SHARED_LIBRARY_SUFFIX})
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if(APPLE)
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if(LLVM_ENABLE_LLD AND LLVM_ENABLE_LTO)
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message(FATAL_ERROR "lld does not support LTO on Darwin")
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endif()
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# Darwin-specific linker flags for loadable modules.
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set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-flat_namespace -Wl,-undefined -Wl,suppress")
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endif()
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# Pass -Wl,-z,defs. This makes sure all symbols are defined. Otherwise a DSO
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# build might work on ELF but fail on MachO/COFF.
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if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" OR WIN32 OR CYGWIN OR
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${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR
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${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD") AND
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NOT LLVM_USE_SANITIZER)
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,defs")
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endif()
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function(append value)
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foreach(variable ${ARGN})
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set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
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endforeach(variable)
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endfunction()
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function(append_if condition value)
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if (${condition})
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foreach(variable ${ARGN})
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set(${variable} "${${variable}} ${value}" PARENT_SCOPE)
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endforeach(variable)
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endif()
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endfunction()
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macro(add_flag_if_supported flag name)
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check_c_compiler_flag("-Werror ${flag}" "C_SUPPORTS_${name}")
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append_if("C_SUPPORTS_${name}" "${flag}" CMAKE_C_FLAGS)
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check_cxx_compiler_flag("-Werror ${flag}" "CXX_SUPPORTS_${name}")
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append_if("CXX_SUPPORTS_${name}" "${flag}" CMAKE_CXX_FLAGS)
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endmacro()
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function(add_flag_or_print_warning flag name)
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check_c_compiler_flag("-Werror ${flag}" "C_SUPPORTS_${name}")
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check_cxx_compiler_flag("-Werror ${flag}" "CXX_SUPPORTS_${name}")
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if (C_SUPPORTS_${name} AND CXX_SUPPORTS_${name})
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message(STATUS "Building with ${flag}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
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set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${flag}" PARENT_SCOPE)
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else()
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message(WARNING "${flag} is not supported.")
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endif()
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endfunction()
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if( LLVM_ENABLE_LLD )
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if ( LLVM_USE_LINKER )
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message(FATAL_ERROR "LLVM_ENABLE_LLD and LLVM_USE_LINKER can't be set at the same time")
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endif()
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set(LLVM_USE_LINKER "lld")
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endif()
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if( LLVM_USE_LINKER )
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check_cxx_compiler_flag("-fuse-ld=${LLVM_USE_LINKER}" CXX_SUPPORTS_CUSTOM_LINKER)
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if ( NOT CXX_SUPPORTS_CUSTOM_LINKER )
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message(FATAL_ERROR "Host compiler does not support '-fuse-ld=${LLVM_USE_LINKER}'")
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endif()
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append("-fuse-ld=${LLVM_USE_LINKER}"
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CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
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endif()
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if( LLVM_ENABLE_PIC )
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if( XCODE )
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# Xcode has -mdynamic-no-pic on by default, which overrides -fPIC. I don't
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# know how to disable this, so just force ENABLE_PIC off for now.
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message(WARNING "-fPIC not supported with Xcode.")
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elseif( WIN32 OR CYGWIN)
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# On Windows all code is PIC. MinGW warns if -fPIC is used.
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else()
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add_flag_or_print_warning("-fPIC" FPIC)
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endif()
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endif()
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if(NOT WIN32 AND NOT CYGWIN)
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# MinGW warns if -fvisibility-inlines-hidden is used.
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check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG)
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append_if(SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG "-fvisibility-inlines-hidden" CMAKE_CXX_FLAGS)
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endif()
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if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
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# TODO: support other platforms and toolchains.
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if( LLVM_BUILD_32_BITS )
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message(STATUS "Building 32 bits executables and libraries.")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m32")
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m32")
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set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -m32")
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endif( LLVM_BUILD_32_BITS )
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endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
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# If building on a GNU specific 32-bit system, make sure off_t is 64 bits
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# so that off_t can stored offset > 2GB
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if( CMAKE_SIZEOF_VOID_P EQUAL 4 )
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add_definitions( -D_LARGEFILE_SOURCE )
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add_definitions( -D_FILE_OFFSET_BITS=64 )
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endif()
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if( XCODE )
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# For Xcode enable several build settings that correspond to
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# many warnings that are on by default in Clang but are
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# not enabled for historical reasons. For versions of Xcode
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# that do not support these options they will simply
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# be ignored.
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_ABOUT_RETURN_TYPE "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_ABOUT_MISSING_NEWLINE "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_UNUSED_VALUE "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_UNUSED_VARIABLE "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_SIGN_COMPARE "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_UNUSED_FUNCTION "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_HIDDEN_VIRTUAL_FUNCTIONS "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_UNINITIALIZED_AUTOS "YES")
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set(CMAKE_XCODE_ATTRIBUTE_CLANG_WARN_BOOL_CONVERSION "YES")
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set(CMAKE_XCODE_ATTRIBUTE_CLANG_WARN_EMPTY_BODY "YES")
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set(CMAKE_XCODE_ATTRIBUTE_CLANG_WARN_ENUM_CONVERSION "YES")
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set(CMAKE_XCODE_ATTRIBUTE_CLANG_WARN_INT_CONVERSION "YES")
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set(CMAKE_XCODE_ATTRIBUTE_CLANG_WARN_CONSTANT_CONVERSION "YES")
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set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_NON_VIRTUAL_DESTRUCTOR "YES")
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endif()
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# On Win32 using MS tools, provide an option to set the number of parallel jobs
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# to use.
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if( MSVC_IDE )
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set(LLVM_COMPILER_JOBS "0" CACHE STRING
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"Number of parallel compiler jobs. 0 means use all processors. Default is 0.")
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if( NOT LLVM_COMPILER_JOBS STREQUAL "1" )
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if( LLVM_COMPILER_JOBS STREQUAL "0" )
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add_definitions( /MP )
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else()
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message(STATUS "Number of parallel compiler jobs set to " ${LLVM_COMPILER_JOBS})
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add_definitions( /MP${LLVM_COMPILER_JOBS} )
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endif()
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else()
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message(STATUS "Parallel compilation disabled")
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endif()
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endif()
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# set stack reserved size to ~10MB
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if(MSVC)
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# CMake previously automatically set this value for MSVC builds, but the
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# behavior was changed in CMake 2.8.11 (Issue 12437) to use the MSVC default
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# value (1 MB) which is not enough for us in tasks such as parsing recursive
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# C++ templates in Clang.
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10000000")
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elseif(MINGW) # FIXME: Also cygwin?
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--stack,16777216")
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# Pass -mbig-obj to mingw gas on Win64. COFF has a 2**16 section limit, and
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# on Win64, every COMDAT function creates at least 3 sections: .text, .pdata,
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# and .xdata.
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if (CMAKE_SIZEOF_VOID_P EQUAL 8)
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append("-Wa,-mbig-obj" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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endif()
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if( MSVC )
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if( CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0 )
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# For MSVC 2013, disable iterator null pointer checking in debug mode,
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# especially so std::equal(nullptr, nullptr, nullptr) will not assert.
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add_definitions("-D_DEBUG_POINTER_IMPL=")
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endif()
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include(ChooseMSVCCRT)
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if( MSVC11 )
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add_definitions(-D_VARIADIC_MAX=10)
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endif()
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# Add definitions that make MSVC much less annoying.
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add_definitions(
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# For some reason MS wants to deprecate a bunch of standard functions...
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-D_CRT_SECURE_NO_DEPRECATE
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-D_CRT_SECURE_NO_WARNINGS
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-D_CRT_NONSTDC_NO_DEPRECATE
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-D_CRT_NONSTDC_NO_WARNINGS
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-D_SCL_SECURE_NO_DEPRECATE
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-D_SCL_SECURE_NO_WARNINGS
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)
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# Tell MSVC to use the Unicode version of the Win32 APIs instead of ANSI.
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add_definitions(
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-DUNICODE
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-D_UNICODE
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)
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if (LLVM_ENABLE_WERROR)
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append("/WX" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif (LLVM_ENABLE_WERROR)
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append("/Zc:inline" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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# /Zc:strictStrings is incompatible with VS12's (Visual Studio 2013's)
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# debug mode headers. Instead of only enabling them in VS2013's debug mode,
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# we'll just enable them for Visual Studio 2015 (VS 14, MSVC_VERSION 1900)
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# and up.
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if (NOT (MSVC_VERSION LESS 1900))
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# Disable string literal const->non-const type conversion.
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# "When specified, the compiler requires strict const-qualification
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# conformance for pointers initialized by using string literals."
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append("/Zc:strictStrings" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif(NOT (MSVC_VERSION LESS 1900))
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# "Generate Intrinsic Functions".
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append("/Oi" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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# "Enforce type conversion rules".
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append("/Zc:rvalueCast" CMAKE_CXX_FLAGS)
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if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND NOT LLVM_ENABLE_LTO)
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# clang-cl and cl by default produce non-deterministic binaries because
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# link.exe /incremental requires a timestamp in the .obj file. clang-cl
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# has the flag /Brepro to force deterministic binaries. We want to pass that
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# whenever you're building with clang unless you're passing /incremental
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# or using LTO (/Brepro with LTO would result in a warning about the flag
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# being unused, because we're not generating object files).
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# This checks CMAKE_CXX_COMPILER_ID in addition to check_cxx_compiler_flag()
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# because cl.exe does not emit an error on flags it doesn't understand,
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# letting check_cxx_compiler_flag() claim it understands all flags.
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check_cxx_compiler_flag("/Brepro" SUPPORTS_BREPRO)
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if (SUPPORTS_BREPRO)
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# Check if /INCREMENTAL is passed to the linker and complain that it
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# won't work with /Brepro.
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string(TOUPPER "${CMAKE_EXE_LINKER_FLAGS}" upper_exe_flags)
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string(TOUPPER "${CMAKE_MODULE_LINKER_FLAGS}" upper_module_flags)
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string(TOUPPER "${CMAKE_SHARED_LINKER_FLAGS}" upper_shared_flags)
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string(FIND "${upper_exe_flags} ${upper_module_flags} ${upper_shared_flags}"
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"/INCREMENTAL" linker_flag_idx)
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if (${linker_flag_idx} GREATER -1)
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message(WARNING "/Brepro not compatible with /INCREMENTAL linking - builds will be non-deterministic")
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else()
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append("/Brepro" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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endif()
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endif()
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endif()
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elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
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append_if(LLVM_ENABLE_WERROR "-Werror" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
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add_flag_if_supported("-Werror=date-time" WERROR_DATE_TIME)
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if (LLVM_ENABLE_CXX1Y)
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check_cxx_compiler_flag("-std=c++1y" CXX_SUPPORTS_CXX1Y)
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append_if(CXX_SUPPORTS_CXX1Y "-std=c++1y" CMAKE_CXX_FLAGS)
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elseif(LLVM_ENABLE_CXX1Z)
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check_cxx_compiler_flag("-std=c++1z" CXX_SUPPORTS_CXX1Z)
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append_if(CXX_SUPPORTS_CXX1Z "-std=c++1z" CMAKE_CXX_FLAGS)
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else()
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check_cxx_compiler_flag("-std=c++11" CXX_SUPPORTS_CXX11)
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if (CXX_SUPPORTS_CXX11)
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if (CYGWIN OR MINGW)
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# MinGW and Cygwin are a bit stricter and lack things like
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# 'strdup', 'stricmp', etc in c++11 mode.
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append("-std=gnu++11" CMAKE_CXX_FLAGS)
|
|
else()
|
|
append("-std=c++11" CMAKE_CXX_FLAGS)
|
|
endif()
|
|
else()
|
|
message(FATAL_ERROR "LLVM requires C++11 support but the '-std=c++11' flag isn't supported.")
|
|
endif()
|
|
endif()
|
|
if (LLVM_ENABLE_MODULES)
|
|
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
|
set(module_flags "-fmodules -fmodules-cache-path=${PROJECT_BINARY_DIR}/module.cache")
|
|
if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
|
|
# On Darwin -fmodules does not imply -fcxx-modules.
|
|
set(module_flags "${module_flags} -fcxx-modules")
|
|
endif()
|
|
if (LLVM_ENABLE_LOCAL_SUBMODULE_VISIBILITY)
|
|
set(module_flags "${module_flags} -Xclang -fmodules-local-submodule-visibility")
|
|
endif()
|
|
if (LLVM_ENABLE_MODULE_DEBUGGING AND
|
|
((uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG") OR
|
|
(uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")))
|
|
set(module_flags "${module_flags} -gmodules")
|
|
endif()
|
|
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${module_flags}")
|
|
|
|
# Check that we can build code with modules enabled, and that repeatedly
|
|
# including <cassert> still manages to respect NDEBUG properly.
|
|
CHECK_CXX_SOURCE_COMPILES("#undef NDEBUG
|
|
#include <cassert>
|
|
#define NDEBUG
|
|
#include <cassert>
|
|
int main() { assert(this code is not compiled); }"
|
|
CXX_SUPPORTS_MODULES)
|
|
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
|
|
if (CXX_SUPPORTS_MODULES)
|
|
append("${module_flags}" CMAKE_CXX_FLAGS)
|
|
else()
|
|
message(FATAL_ERROR "LLVM_ENABLE_MODULES is not supported by this compiler")
|
|
endif()
|
|
endif(LLVM_ENABLE_MODULES)
|
|
endif( MSVC )
|
|
|
|
if (MSVC AND NOT CLANG_CL)
|
|
set(msvc_warning_flags
|
|
# Disabled warnings.
|
|
-wd4141 # Suppress ''modifier' : used more than once' (because of __forceinline combined with inline)
|
|
-wd4146 # Suppress 'unary minus operator applied to unsigned type, result still unsigned'
|
|
-wd4180 # Suppress 'qualifier applied to function type has no meaning; ignored'
|
|
-wd4244 # Suppress ''argument' : conversion from 'type1' to 'type2', possible loss of data'
|
|
-wd4258 # Suppress ''var' : definition from the for loop is ignored; the definition from the enclosing scope is used'
|
|
-wd4267 # Suppress ''var' : conversion from 'size_t' to 'type', possible loss of data'
|
|
-wd4291 # Suppress ''declaration' : no matching operator delete found; memory will not be freed if initialization throws an exception'
|
|
-wd4345 # Suppress 'behavior change: an object of POD type constructed with an initializer of the form () will be default-initialized'
|
|
-wd4351 # Suppress 'new behavior: elements of array 'array' will be default initialized'
|
|
-wd4355 # Suppress ''this' : used in base member initializer list'
|
|
-wd4456 # Suppress 'declaration of 'var' hides local variable'
|
|
-wd4457 # Suppress 'declaration of 'var' hides function parameter'
|
|
-wd4458 # Suppress 'declaration of 'var' hides class member'
|
|
-wd4459 # Suppress 'declaration of 'var' hides global declaration'
|
|
-wd4503 # Suppress ''identifier' : decorated name length exceeded, name was truncated'
|
|
-wd4624 # Suppress ''derived class' : destructor could not be generated because a base class destructor is inaccessible'
|
|
-wd4722 # Suppress 'function' : destructor never returns, potential memory leak
|
|
-wd4800 # Suppress ''type' : forcing value to bool 'true' or 'false' (performance warning)'
|
|
-wd4100 # Suppress 'unreferenced formal parameter'
|
|
-wd4127 # Suppress 'conditional expression is constant'
|
|
-wd4512 # Suppress 'assignment operator could not be generated'
|
|
-wd4505 # Suppress 'unreferenced local function has been removed'
|
|
-wd4610 # Suppress '<class> can never be instantiated'
|
|
-wd4510 # Suppress 'default constructor could not be generated'
|
|
-wd4702 # Suppress 'unreachable code'
|
|
-wd4245 # Suppress 'signed/unsigned mismatch'
|
|
-wd4706 # Suppress 'assignment within conditional expression'
|
|
-wd4310 # Suppress 'cast truncates constant value'
|
|
-wd4701 # Suppress 'potentially uninitialized local variable'
|
|
-wd4703 # Suppress 'potentially uninitialized local pointer variable'
|
|
-wd4389 # Suppress 'signed/unsigned mismatch'
|
|
-wd4611 # Suppress 'interaction between '_setjmp' and C++ object destruction is non-portable'
|
|
-wd4805 # Suppress 'unsafe mix of type <type> and type <type> in operation'
|
|
-wd4204 # Suppress 'nonstandard extension used : non-constant aggregate initializer'
|
|
-wd4577 # Suppress 'noexcept used with no exception handling mode specified; termination on exception is not guaranteed'
|
|
-wd4091 # Suppress 'typedef: ignored on left of '' when no variable is declared'
|
|
# C4592 is disabled because of false positives in Visual Studio 2015
|
|
# Update 1. Re-evaluate the usefulness of this diagnostic with Update 2.
|
|
-wd4592 # Suppress ''var': symbol will be dynamically initialized (implementation limitation)
|
|
-wd4319 # Suppress ''operator' : zero extending 'type' to 'type' of greater size'
|
|
|
|
# Ideally, we'd like this warning to be enabled, but MSVC 2013 doesn't
|
|
# support the 'aligned' attribute in the way that clang sources requires (for
|
|
# any code that uses the LLVM_ALIGNAS macro), so this is must be disabled to
|
|
# avoid unwanted alignment warnings.
|
|
# When we switch to requiring a version of MSVC that supports the 'alignas'
|
|
# specifier (MSVC 2015?) this warning can be re-enabled.
|
|
-wd4324 # Suppress 'structure was padded due to __declspec(align())'
|
|
|
|
# Promoted warnings.
|
|
-w14062 # Promote 'enumerator in switch of enum is not handled' to level 1 warning.
|
|
|
|
# Promoted warnings to errors.
|
|
-we4238 # Promote 'nonstandard extension used : class rvalue used as lvalue' to error.
|
|
)
|
|
|
|
# Enable warnings
|
|
if (LLVM_ENABLE_WARNINGS)
|
|
# Put /W4 in front of all the -we flags. cl.exe doesn't care, but for
|
|
# clang-cl having /W4 after the -we flags will re-enable the warnings
|
|
# disabled by -we.
|
|
set(msvc_warning_flags "/W4 ${msvc_warning_flags}")
|
|
# CMake appends /W3 by default, and having /W3 followed by /W4 will result in
|
|
# cl : Command line warning D9025 : overriding '/W3' with '/W4'. Since this is
|
|
# a command line warning and not a compiler warning, it cannot be suppressed except
|
|
# by fixing the command line.
|
|
string(REGEX REPLACE " /W[0-4]" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
|
|
string(REGEX REPLACE " /W[0-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
|
|
|
|
if (LLVM_ENABLE_PEDANTIC)
|
|
# No MSVC equivalent available
|
|
endif (LLVM_ENABLE_PEDANTIC)
|
|
endif (LLVM_ENABLE_WARNINGS)
|
|
|
|
foreach(flag ${msvc_warning_flags})
|
|
append("${flag}" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endforeach(flag)
|
|
endif (MSVC AND NOT CLANG_CL)
|
|
|
|
if (LLVM_ENABLE_WARNINGS AND (LLVM_COMPILER_IS_GCC_COMPATIBLE OR CLANG_CL))
|
|
append("-Wall -W -Wno-unused-parameter -Wwrite-strings" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
append("-Wcast-qual" CMAKE_CXX_FLAGS)
|
|
|
|
# Turn off missing field initializer warnings for gcc to avoid noise from
|
|
# false positives with empty {}. Turn them on otherwise (they're off by
|
|
# default for clang).
|
|
check_cxx_compiler_flag("-Wmissing-field-initializers" CXX_SUPPORTS_MISSING_FIELD_INITIALIZERS_FLAG)
|
|
if (CXX_SUPPORTS_MISSING_FIELD_INITIALIZERS_FLAG)
|
|
if (CMAKE_COMPILER_IS_GNUCXX)
|
|
append("-Wno-missing-field-initializers" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
else()
|
|
append("-Wmissing-field-initializers" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
endif()
|
|
|
|
if (LLVM_ENABLE_PEDANTIC AND LLVM_COMPILER_IS_GCC_COMPATIBLE)
|
|
append("-pedantic" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
append("-Wno-long-long" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
|
|
add_flag_if_supported("-Wcovered-switch-default" COVERED_SWITCH_DEFAULT_FLAG)
|
|
append_if(USE_NO_UNINITIALIZED "-Wno-uninitialized" CMAKE_CXX_FLAGS)
|
|
append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS)
|
|
|
|
# Check if -Wnon-virtual-dtor warns even though the class is marked final.
|
|
# If it does, don't add it. So it won't be added on clang 3.4 and older.
|
|
# This also catches cases when -Wnon-virtual-dtor isn't supported by
|
|
# the compiler at all. This flag is not activated for gcc since it will
|
|
# incorrectly identify a protected non-virtual base when there is a friend
|
|
# declaration. Don't activate this in general on Windows as this warning has
|
|
# too many false positives on COM-style classes, which are destroyed with
|
|
# Release() (PR32286).
|
|
if (NOT CMAKE_COMPILER_IS_GNUCXX AND NOT WIN32)
|
|
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
|
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -std=c++11 -Werror=non-virtual-dtor")
|
|
CHECK_CXX_SOURCE_COMPILES("class base {public: virtual void anchor();protected: ~base();};
|
|
class derived final : public base { public: ~derived();};
|
|
int main() { return 0; }"
|
|
CXX_WONT_WARN_ON_FINAL_NONVIRTUALDTOR)
|
|
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
|
|
append_if(CXX_WONT_WARN_ON_FINAL_NONVIRTUALDTOR
|
|
"-Wnon-virtual-dtor" CMAKE_CXX_FLAGS)
|
|
endif()
|
|
|
|
# Enable -Wdelete-non-virtual-dtor if available.
|
|
add_flag_if_supported("-Wdelete-non-virtual-dtor" DELETE_NON_VIRTUAL_DTOR_FLAG)
|
|
|
|
# Check if -Wcomment is OK with an // comment ending with '\' if the next
|
|
# line is also a // comment.
|
|
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
|
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror -Wcomment")
|
|
CHECK_C_SOURCE_COMPILES("// \\\\\\n//\\nint main() {return 0;}"
|
|
C_WCOMMENT_ALLOWS_LINE_WRAP)
|
|
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
|
|
if (NOT C_WCOMMENT_ALLOWS_LINE_WRAP)
|
|
append("-Wno-comment" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
|
|
# Enable -Wstring-conversion to catch misuse of string literals.
|
|
add_flag_if_supported("-Wstring-conversion" STRING_CONVERSION_FLAG)
|
|
endif (LLVM_ENABLE_WARNINGS AND (LLVM_COMPILER_IS_GCC_COMPATIBLE OR CLANG_CL))
|
|
|
|
if (LLVM_COMPILER_IS_GCC_COMPATIBLE AND NOT LLVM_ENABLE_WARNINGS)
|
|
append("-w" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
|
|
macro(append_common_sanitizer_flags)
|
|
if (NOT MSVC)
|
|
# Append -fno-omit-frame-pointer and turn on debug info to get better
|
|
# stack traces.
|
|
add_flag_if_supported("-fno-omit-frame-pointer" FNO_OMIT_FRAME_POINTER)
|
|
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND
|
|
NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
|
|
add_flag_if_supported("-gline-tables-only" GLINE_TABLES_ONLY)
|
|
endif()
|
|
# Use -O1 even in debug mode, otherwise sanitizers slowdown is too large.
|
|
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
|
|
add_flag_if_supported("-O1" O1)
|
|
endif()
|
|
elseif (CLANG_CL)
|
|
# Keep frame pointers around.
|
|
append("/Oy-" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
if (LINKER_IS_LLD_LINK)
|
|
# Use DWARF debug info with LLD.
|
|
append("-gdwarf" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
else()
|
|
# Enable codeview otherwise.
|
|
append("/Z7" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
# Always ask the linker to produce symbols with asan.
|
|
append("-debug" CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
endmacro()
|
|
|
|
# Turn on sanitizers if necessary.
|
|
if(LLVM_USE_SANITIZER)
|
|
if (LLVM_ON_UNIX)
|
|
if (LLVM_USE_SANITIZER STREQUAL "Address")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=address" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=memory" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
if(LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
|
|
append("-fsanitize-memory-track-origins" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
elseif (LLVM_USE_SANITIZER STREQUAL "Undefined")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all"
|
|
CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
set(BLACKLIST_FILE "${CMAKE_SOURCE_DIR}/utils/sanitizers/ubsan_blacklist.txt")
|
|
if (EXISTS "${BLACKLIST_FILE}")
|
|
append("-fsanitize-blacklist=${BLACKLIST_FILE}"
|
|
CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
elseif (LLVM_USE_SANITIZER STREQUAL "Thread")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=thread" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
elseif (LLVM_USE_SANITIZER STREQUAL "Address;Undefined" OR
|
|
LLVM_USE_SANITIZER STREQUAL "Undefined;Address")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=address,undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all"
|
|
CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
elseif (LLVM_USE_SANITIZER STREQUAL "Leaks")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=leak" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
else()
|
|
message(FATAL_ERROR "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
|
|
endif()
|
|
elseif(MSVC)
|
|
if (LLVM_USE_SANITIZER STREQUAL "Address")
|
|
append_common_sanitizer_flags()
|
|
append("-fsanitize=address" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
else()
|
|
message(FATAL_ERROR "This sanitizer not yet supported in the MSVC environment: ${LLVM_USE_SANITIZER}")
|
|
endif()
|
|
else()
|
|
message(FATAL_ERROR "LLVM_USE_SANITIZER is not supported on this platform.")
|
|
endif()
|
|
if (LLVM_USE_SANITIZER MATCHES "(Undefined;)?Address(;Undefined)?")
|
|
add_flag_if_supported("-fsanitize-address-use-after-scope"
|
|
FSANITIZE_USE_AFTER_SCOPE_FLAG)
|
|
endif()
|
|
if (LLVM_USE_SANITIZE_COVERAGE)
|
|
append("-fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
endif()
|
|
|
|
# Turn on -gsplit-dwarf if requested
|
|
if(LLVM_USE_SPLIT_DWARF)
|
|
add_definitions("-gsplit-dwarf")
|
|
endif()
|
|
|
|
add_definitions( -D__STDC_CONSTANT_MACROS )
|
|
add_definitions( -D__STDC_FORMAT_MACROS )
|
|
add_definitions( -D__STDC_LIMIT_MACROS )
|
|
|
|
# clang doesn't print colored diagnostics when invoked from Ninja
|
|
if (UNIX AND
|
|
CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND
|
|
CMAKE_GENERATOR STREQUAL "Ninja")
|
|
append("-fcolor-diagnostics" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
|
|
endif()
|
|
|
|
# lld doesn't print colored diagnostics when invoked from Ninja
|
|
if (UNIX AND CMAKE_GENERATOR STREQUAL "Ninja")
|
|
include(CheckLinkerFlag)
|
|
check_linker_flag("-Wl,-color-diagnostics" LINKER_SUPPORTS_COLOR_DIAGNOSTICS)
|
|
append_if(LINKER_SUPPORTS_COLOR_DIAGNOSTICS "-Wl,-color-diagnostics"
|
|
CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
|
|
# Add flags for add_dead_strip().
|
|
# FIXME: With MSVS, consider compiling with /Gy and linking with /OPT:REF?
|
|
# But MinSizeRel seems to add that automatically, so maybe disable these
|
|
# flags instead if LLVM_NO_DEAD_STRIP is set.
|
|
if(NOT CYGWIN AND NOT WIN32)
|
|
if(NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND
|
|
NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
|
|
check_c_compiler_flag("-Werror -fno-function-sections" C_SUPPORTS_FNO_FUNCTION_SECTIONS)
|
|
if (C_SUPPORTS_FNO_FUNCTION_SECTIONS)
|
|
# Don't add -ffunction-section if it can be disabled with -fno-function-sections.
|
|
# Doing so will break sanitizers.
|
|
add_flag_if_supported("-ffunction-sections" FFUNCTION_SECTIONS)
|
|
endif()
|
|
add_flag_if_supported("-fdata-sections" FDATA_SECTIONS)
|
|
endif()
|
|
endif()
|
|
|
|
if(MSVC)
|
|
# Remove flags here, for exceptions and RTTI.
|
|
# Each target property or source property should be responsible to control
|
|
# them.
|
|
# CL.EXE complains to override flags like "/GR /GR-".
|
|
string(REGEX REPLACE "(^| ) */EH[-cs]+ *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
|
|
string(REGEX REPLACE "(^| ) */GR-? *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
|
|
endif()
|
|
|
|
# Provide public options to globally control RTTI and EH
|
|
option(LLVM_ENABLE_EH "Enable Exception handling" OFF)
|
|
option(LLVM_ENABLE_RTTI "Enable run time type information" OFF)
|
|
if(LLVM_ENABLE_EH AND NOT LLVM_ENABLE_RTTI)
|
|
message(FATAL_ERROR "Exception handling requires RTTI. You must set LLVM_ENABLE_RTTI to ON")
|
|
endif()
|
|
|
|
option(LLVM_BUILD_INSTRUMENTED "Build LLVM and tools with PGO instrumentation (experimental)" Off)
|
|
mark_as_advanced(LLVM_BUILD_INSTRUMENTED)
|
|
append_if(LLVM_BUILD_INSTRUMENTED "-fprofile-instr-generate='${LLVM_PROFILE_FILE_PATTERN}'"
|
|
CMAKE_CXX_FLAGS
|
|
CMAKE_C_FLAGS
|
|
CMAKE_EXE_LINKER_FLAGS
|
|
CMAKE_SHARED_LINKER_FLAGS)
|
|
|
|
option(LLVM_BUILD_INSTRUMENTED_COVERAGE "Build LLVM and tools with Code Coverage instrumentation (experimental)" Off)
|
|
mark_as_advanced(LLVM_BUILD_INSTRUMENTED_COVERAGE)
|
|
append_if(LLVM_BUILD_INSTRUMENTED_COVERAGE "-fprofile-instr-generate='${LLVM_PROFILE_FILE_PATTERN}' -fcoverage-mapping"
|
|
CMAKE_CXX_FLAGS
|
|
CMAKE_C_FLAGS
|
|
CMAKE_EXE_LINKER_FLAGS
|
|
CMAKE_SHARED_LINKER_FLAGS)
|
|
|
|
if(LLVM_ENABLE_LTO AND LLVM_ON_WIN32 AND NOT LINKER_IS_LLD_LINK)
|
|
message(FATAL_ERROR "When compiling for Windows, LLVM_ENABLE_LTO requires using lld as the linker (point CMAKE_LINKER at lld-link.exe)")
|
|
endif()
|
|
if(uppercase_LLVM_ENABLE_LTO STREQUAL "THIN")
|
|
append("-flto=thin" CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
|
|
if(NOT LINKER_IS_LLD_LINK)
|
|
append("-flto=thin" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
# If the linker supports it, enable the lto cache. This improves initial build
|
|
# time a little since we re-link a lot of the same objects, and significantly
|
|
# improves incremental build time.
|
|
# FIXME: We should move all this logic into the clang driver.
|
|
if(APPLE)
|
|
append("-Wl,-cache_path_lto,${PROJECT_BINARY_DIR}/lto.cache"
|
|
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
elseif(UNIX AND LLVM_USE_LINKER STREQUAL "lld")
|
|
append("-Wl,--thinlto-cache-dir=${PROJECT_BINARY_DIR}/lto.cache"
|
|
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
elseif(LLVM_USE_LINKER STREQUAL "gold")
|
|
append("-Wl,--plugin-opt,cache-dir=${PROJECT_BINARY_DIR}/lto.cache"
|
|
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
elseif(uppercase_LLVM_ENABLE_LTO STREQUAL "FULL")
|
|
append("-flto=full" CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
|
|
if(NOT LINKER_IS_LLD_LINK)
|
|
append("-flto=full" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
elseif(LLVM_ENABLE_LTO)
|
|
append("-flto" CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
|
|
if(NOT LINKER_IS_LLD_LINK)
|
|
append("-flto" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
|
|
endif()
|
|
endif()
|
|
|
|
# This option makes utils/extract_symbols.py be used to determine the list of
|
|
# symbols to export from LLVM tools. This is necessary when using MSVC if you
|
|
# want to allow plugins, though note that the plugin has to explicitly link
|
|
# against (exactly one) tool so we can't unilaterally turn on
|
|
# LLVM_ENABLE_PLUGINS when it's enabled.
|
|
option(LLVM_EXPORT_SYMBOLS_FOR_PLUGINS "Export symbols from LLVM tools so that plugins can import them" OFF)
|
|
if(BUILD_SHARED_LIBS AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS)
|
|
message(FATAL_ERROR "BUILD_SHARED_LIBS not compatible with LLVM_EXPORT_SYMBOLS_FOR_PLUGINS")
|
|
endif()
|
|
if(LLVM_LINK_LLVM_DYLIB AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS)
|
|
message(FATAL_ERROR "LLVM_LINK_LLVM_DYLIB not compatible with LLVM_EXPORT_SYMBOLS_FOR_PLUGINS")
|
|
endif()
|
|
|
|
# Plugin support
|
|
# FIXME: Make this configurable.
|
|
if(WIN32 OR CYGWIN)
|
|
if(BUILD_SHARED_LIBS)
|
|
set(LLVM_ENABLE_PLUGINS ON)
|
|
else()
|
|
set(LLVM_ENABLE_PLUGINS OFF)
|
|
endif()
|
|
else()
|
|
set(LLVM_ENABLE_PLUGINS ON)
|
|
endif()
|
|
|
|
function(get_compile_definitions)
|
|
get_directory_property(top_dir_definitions DIRECTORY ${CMAKE_SOURCE_DIR} COMPILE_DEFINITIONS)
|
|
foreach(definition ${top_dir_definitions})
|
|
if(DEFINED result)
|
|
string(APPEND result " -D${definition}")
|
|
else()
|
|
set(result "-D${definition}")
|
|
endif()
|
|
endforeach()
|
|
set(LLVM_DEFINITIONS "${result}" PARENT_SCOPE)
|
|
endfunction()
|
|
get_compile_definitions()
|