159 lines
8.6 KiB
CMake
159 lines
8.6 KiB
CMake
#
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#//===----------------------------------------------------------------------===//
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#//
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#// The LLVM Compiler Infrastructure
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#//
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#// This file is dual licensed under the MIT and the University of Illinois Open
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#// Source Licenses. See LICENSE.txt for details.
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#//
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#//===----------------------------------------------------------------------===//
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#
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# This file holds Intel(R) C Compiler / Intel(R) C++ Compiler / Intel(R) Fortran Compiler (icc/icpc/icl.exe/ifort) dependent flags
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# The flag types are:
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# 2) C/C++ Compiler flags
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# 4) Linker flags
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# icc has a 128-bit floating point type called _Quad. Always compile with 128-bit floating point if it exists.
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unset(COMPILER_SUPPORTS_QUAD_PRECISION CACHE)
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set(COMPILER_SUPPORTS_QUAD_PRECISION true CACHE BOOL "Does the compiler support a 128-bit floating point type?")
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set(COMPILER_QUAD_TYPE _Quad)
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#########################################################
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# icc C/C++ Compiler flags
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function(append_compiler_specific_c_and_cxx_flags input_c_flags input_cxx_flags)
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set(local_c_flags)
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set(local_cxx_flags)
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if(${WINDOWS})
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append_c_flags("-TP") # Tells the compiler to process a file as a C++ source file.
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append_cxx_flags("-EHsc") # Enable C++ exception handling.
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append_c_and_cxx_flags("-nologo") # Turn off tool banner.
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append_c_and_cxx_flags("-W3") # Enables diagnostics for remarks, warnings, and errors.
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# Additional warnings are also enabled above level 2 warnings.
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append_c_and_cxx_flags("-WX") # Change all Warnings to Errors
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append_c_and_cxx_flags("-GS") # Lets you control the threshold at which the stack checking routine is called or not called.
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append_c_and_cxx_flags("-Qoption,cpp,--extended_float_types") # Enabled _Quad type.
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if(${IA32})
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append_c_and_cxx_flags("-arch:ia32") # Tells the compiler which features it may target (ia32)
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append_c_and_cxx_flags("-Oy-") # equivalent to -fno-omit-frame-pointer
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endif()
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append_c_and_cxx_flags("-Qlong_double") # enable long double
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append_c_and_cxx_flags("-Qdiag-disable:177") # Disable warning: "... declared but never referenced"
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if(${IA32})
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append_c_and_cxx_flags("-Qsafeseh") # Registers exception handlers for safe exception handling.
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endif()
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if(${RELEASE_BUILD} OR ${RELWITHDEBINFO_BUILD})
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append_c_and_cxx_flags("-Qinline-min-size=1") # Specifies the upper limit for the size of what the inliner considers to be a small routine.
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else()
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append_c_and_cxx_flags("-Od") # Disables all optimizations.
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append_c_and_cxx_flags("-RTC1") # Enables run-time checks of the stack frame, and enables run-time checks for unintialized variables.
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append_c_and_cxx_flags("-MTd") # Tells the linker to search for unresolved references in a multithreaded, static run-time library.
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endif()
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else()
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append_c_and_cxx_flags("-Wsign-compare") # warn on sign comparisons
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append_c_and_cxx_flags("-Qoption,cpp,--extended_float_types") # Enabled _Quad type.
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append_c_and_cxx_flags("-fno-exceptions") # Exception handling table generation is disabled.
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append_c_and_cxx_flags("-x c++") # Compile C files as C++ files
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if(${MIC})
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append_c_and_cxx_flags("-mmic") # Build Intel(R) MIC Architecture native code
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append_c_and_cxx_flags("-ftls-model=initial-exec") # Changes the thread local storage (TLS) model. Generates a restrictive, optimized TLS code.
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# To use this setting, the thread-local variables accessed must be defined in one of the
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# modules available to the program.
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append_c_and_cxx_flags("-opt-streaming-stores never") # Disables generation of streaming stores for optimization.
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append_c_and_cxx_flags("-sox") # Tells the compiler to save the compilation options and version number
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# in the executable file. It also lets you choose whether to include
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# lists of certain functions.
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elseif(${LINUX})
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append_c_and_cxx_flags("-Werror") # Changes all warnings to errors.
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append_c_and_cxx_flags("-sox")
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if(${IA32})
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append_c_and_cxx_flags("-falign-stack=maintain-16-byte") # Tells the compiler the stack alignment to use on entry to routines.
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append_c_and_cxx_flags("-mia32") # Tells the compiler which features it may target (ia32)
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endif()
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endif()
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endif()
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# CMake prefers the /MD flags when compiling Windows sources, but libiomp5 needs to use /MT instead
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# So we replace these /MD instances with /MT within the CMAKE_*_FLAGS variables and put that out to the CACHE.
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# replace_md_with_mt() is in HelperFunctions.cmake
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if(${WINDOWS})
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replace_md_with_mt(CMAKE_C_FLAGS)
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replace_md_with_mt(CMAKE_C_FLAGS_RELEASE)
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replace_md_with_mt(CMAKE_C_FLAGS_RELWITHDEBINFO)
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replace_md_with_mt(CMAKE_C_FLAGS_DEBUG)
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replace_md_with_mt(CMAKE_CXX_FLAGS)
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replace_md_with_mt(CMAKE_CXX_FLAGS_RELEASE)
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replace_md_with_mt(CMAKE_CXX_FLAGS_RELWITHDEBINFO)
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replace_md_with_mt(CMAKE_CXX_FLAGS_DEBUG)
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endif()
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set(${input_c_flags} ${${input_c_flags}} "${local_c_flags}" PARENT_SCOPE)
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set(${input_cxx_flags} ${${input_cxx_flags}} "${local_cxx_flags}" PARENT_SCOPE)
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endfunction()
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#########################################################
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# icc Linker flags
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function(append_compiler_specific_linker_flags input_ld_flags input_ld_flags_libs)
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set(local_ld_flags)
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set(local_ld_flags_libs)
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if(${WINDOWS})
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# Have icc use link.exe directly when Windows
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set(CMAKE_C_CREATE_SHARED_LIBRARY "link.exe /out:<TARGET> <LINK_FLAGS> <OBJECTS> <LINK_LIBRARIES>" PARENT_SCOPE)
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set(CMAKE_SHARED_LINKER_FLAGS "$ENV{LDFLAGS}" CACHE STRING "Linker Flags" FORCE)
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append_linker_flags("-nologo") # Turn off tool banner.
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append_linker_flags("-dll")
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append_linker_flags("-WX:NO")
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append_linker_flags("-incremental:no")
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append_linker_flags("-version:${version}.0")
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append_linker_flags("-NXCompat")
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append_linker_flags("-DynamicBase") # This option modifies the header of an executable to indicate
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# whether the application should be randomly rebased at load time.
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if(${IA32})
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append_linker_flags("-machine:i386")
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append_linker_flags("-safeseh")
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elseif(${INTEL64})
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append_linker_flags("-machine:amd64")
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endif()
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if(${DEBUG_BUILD} OR ${RELWITHDEBINFO_BUILD})
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if(NOT "${pdb_file}" STREQUAL "")
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append_linker_flags("-debug")
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append_linker_flags("-pdb:${pdb_file}")
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endif()
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else()
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if(NOT "${pdb_file}" STREQUAL "")
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append_linker_flags("-debug")
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append_linker_flags("-pdb:${pdb_file}")
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append_linker_flags("-pdbstripped:${pdb_file}.stripped")
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endif()
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endif()
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if(NOT "${imp_file}" STREQUAL "")
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append_linker_flags("-implib:${lib_file}${lib}")
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endif()
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if(NOT "${def_file}" STREQUAL "")
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append_linker_flags("-def:${def_file}")
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endif()
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elseif(${MAC})
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append_linker_flags("-no-intel-extensions")
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if(NOT ${STUBS_LIBRARY})
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append_linker_flags_library("-pthread") # link in pthread library
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append_linker_flags_library("-ldl") # link in libdl (dynamic loader library)
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endif()
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if(${STATS_GATHERING})
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append_linker_flags_library("-Wl,-lstdc++") # link in standard c++ library (stats-gathering needs it)
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endif()
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elseif(${MIC})
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append_linker_flags("-mmic") # enable MIC linking
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append_linker_flags("-static-intel") # Causes Intel-provided libraries to be linked in statically.
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append_linker_flags("-no-intel-extensions") # Enables or disables all Intel C and Intel C++ language extensions.
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else()
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append_linker_flags("-static-intel") # Causes Intel-provided libraries to be linked in statically.
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append_linker_flags("-Werror") # Warnings become errors
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if(${IA32})
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append_linker_flags_library("-lirc_pic") # link in libirc_pic
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endif()
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endif()
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set(${input_ld_flags} ${${input_ld_flags}} "${local_ld_flags}" PARENT_SCOPE)
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set(${input_ld_flags_libs} ${${input_ld_flags_libs}} "${local_ld_flags_libs}" PARENT_SCOPE)
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endfunction()
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