X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=cmake%2Fmodules%2FHandleLLVMOptions.cmake;h=b79ea4306ebc9090dda799db041ba5c02d473a7d;hp=f62e86ae494bd2e27358ce38e7fa9909cd5c3fe8;hb=55e6c6184ae5c018fa8fc79a9b844557fa2a0787;hpb=afcf6ac7a85601690d43e73ee504e281fa6244aa diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake index f62e86ae494..b79ea4306eb 100644 --- a/cmake/modules/HandleLLVMOptions.cmake +++ b/cmake/modules/HandleLLVMOptions.cmake @@ -1,35 +1,52 @@ +# This CMake module is responsible for interpreting the user defined LLVM_ +# options and executing the appropriate CMake commands to realize the users' +# selections. + include(AddLLVMDefinitions) +include(CheckCCompilerFlag) +include(CheckCXXCompilerFlag) -# Run-time build mode; It is used for unittests. -if(MSVC_IDE) - # Expect "$(Configuration)", "$(OutDir)", etc. - # It is expanded by msbuild or similar. - set(RUNTIME_BUILD_MODE "${CMAKE_CFG_INTDIR}") -elseif(NOT CMAKE_BUILD_TYPE STREQUAL "") - # Expect "Release" "Debug", etc. - # Or unittests could not run. - set(RUNTIME_BUILD_MODE ${CMAKE_BUILD_TYPE}) -else() - # It might be "." - set(RUNTIME_BUILD_MODE "${CMAKE_CFG_INTDIR}") +if( CMAKE_COMPILER_IS_GNUCXX ) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON) +elseif( MSVC ) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE OFF) +elseif( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" ) + set(LLVM_COMPILER_IS_GCC_COMPATIBLE ON) endif() -set(LIT_ARGS_DEFAULT "-sv") -if (MSVC OR XCODE) - set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") +if(NOT LLVM_FORCE_USE_OLD_TOOLCHAIN) + if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") + if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.7) + message(FATAL_ERROR "Host GCC version must be at least 4.7!") + endif() + elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang") + if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.1) + message(FATAL_ERROR "Host Clang version must be at least 3.1!") + endif() + elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") + if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0) + message(FATAL_ERROR "Host Visual Studio must be at least 2012 (MSVC 17.0)") + endif() + endif() endif() -set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" - CACHE STRING "Default options for lit") if( LLVM_ENABLE_ASSERTIONS ) # MSVC doesn't like _DEBUG on release builds. See PR 4379. if( NOT MSVC ) add_definitions( -D_DEBUG ) endif() - # On Release builds cmake automatically defines NDEBUG, so we + # On non-Debug builds cmake automatically defines NDEBUG, so we # explicitly undefine it: - if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" ) + if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" ) add_definitions( -UNDEBUG ) + # Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines. + set(REGEXP_NDEBUG "(^| )[/-]D *NDEBUG($| )") + string (REGEX REPLACE "${REGEXP_NDEBUG}" " " + CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") + string (REGEX REPLACE "${REGEXP_NDEBUG}" " " + CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}") + string (REGEX REPLACE "${REGEXP_NDEBUG}" " " + CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}") endif() else() if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" ) @@ -40,18 +57,14 @@ else() endif() if(WIN32) + set(LLVM_HAVE_LINK_VERSION_SCRIPT 0) if(CYGWIN) set(LLVM_ON_WIN32 0) set(LLVM_ON_UNIX 1) else(CYGWIN) set(LLVM_ON_WIN32 1) set(LLVM_ON_UNIX 0) - - # This is effective only on Win32 hosts to use gnuwin32 tools. - set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") endif(CYGWIN) - set(LTDL_SHLIB_EXT ".dll") - set(EXEEXT ".exe") # Maximum path length is 160 for non-unicode paths set(MAXPATHLEN 160) else(WIN32) @@ -59,11 +72,10 @@ else(WIN32) set(LLVM_ON_WIN32 0) set(LLVM_ON_UNIX 1) if(APPLE) - set(LTDL_SHLIB_EXT ".dylib") + set(LLVM_HAVE_LINK_VERSION_SCRIPT 0) else(APPLE) - set(LTDL_SHLIB_EXT ".so") + set(LLVM_HAVE_LINK_VERSION_SCRIPT 1) endif(APPLE) - set(EXEEXT "") # FIXME: Maximum path length is currently set to 'safe' fixed value set(MAXPATHLEN 2024) else(UNIX) @@ -71,40 +83,118 @@ else(WIN32) endif(UNIX) endif(WIN32) +set(EXEEXT ${CMAKE_EXECUTABLE_SUFFIX}) +set(LTDL_SHLIB_EXT ${CMAKE_SHARED_LIBRARY_SUFFIX}) +set(LLVM_PLUGIN_EXT ${CMAKE_SHARED_MODULE_SUFFIX}) + +function(add_flag_or_print_warning flag) + check_c_compiler_flag(${flag} C_SUPPORTS_FLAG) + check_cxx_compiler_flag(${flag} CXX_SUPPORTS_FLAG) + if (C_SUPPORTS_FLAG AND CXX_SUPPORTS_FLAG) + message(STATUS "Building with ${flag}") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE) + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE) + else() + message(WARNING "${flag} is not supported.") + endif() +endfunction() + +function(append value) + foreach(variable ${ARGN}) + set(${variable} "${${variable}} ${value}" PARENT_SCOPE) + endforeach(variable) +endfunction() + +function(append_if condition value) + if (${condition}) + foreach(variable ${ARGN}) + set(${variable} "${${variable}} ${value}" PARENT_SCOPE) + endforeach(variable) + endif() +endfunction() + +macro(add_flag_if_supported flag) + check_c_compiler_flag(${flag} C_SUPPORTS_FLAG) + append_if(C_SUPPORTS_FLAG "${flag}" CMAKE_C_FLAGS) + check_cxx_compiler_flag(${flag} CXX_SUPPORTS_FLAG) + append_if(CXX_SUPPORTS_FLAG "${flag}" CMAKE_CXX_FLAGS) +endmacro() + if( LLVM_ENABLE_PIC ) if( XCODE ) # Xcode has -mdynamic-no-pic on by default, which overrides -fPIC. I don't # know how to disable this, so just force ENABLE_PIC off for now. message(WARNING "-fPIC not supported with Xcode.") - elseif( WIN32 ) + elseif( WIN32 OR CYGWIN) # On Windows all code is PIC. MinGW warns if -fPIC is used. else() - include(CheckCXXCompilerFlag) - check_cxx_compiler_flag("-fPIC" SUPPORTS_FPIC_FLAG) - if( SUPPORTS_FPIC_FLAG ) - message(STATUS "Building with -fPIC") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") - set(CMAKE_C_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") - else( SUPPORTS_FPIC_FLAG ) - message(WARNING "-fPIC not supported.") + add_flag_or_print_warning("-fPIC") + + if( WIN32 OR CYGWIN) + # MinGW warns if -fvisibility-inlines-hidden is used. + else() + check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG) + append_if(SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG "-fvisibility-inlines-hidden" CMAKE_CXX_FLAGS) endif() endif() endif() if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 ) # TODO: support other platforms and toolchains. - option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF) if( LLVM_BUILD_32_BITS ) message(STATUS "Building 32 bits executables and libraries.") add_llvm_definitions( -m32 ) - list(APPEND CMAKE_EXE_LINKER_FLAGS -m32) - list(APPEND CMAKE_SHARED_LINKER_FLAGS -m32) + set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m32") + set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m32") + set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -m32") endif( LLVM_BUILD_32_BITS ) endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 ) +# On Win32 using MS tools, provide an option to set the number of parallel jobs +# to use. +if( MSVC_IDE ) + set(LLVM_COMPILER_JOBS "0" CACHE STRING + "Number of parallel compiler jobs. 0 means use all processors. Default is 0.") + if( NOT LLVM_COMPILER_JOBS STREQUAL "1" ) + if( LLVM_COMPILER_JOBS STREQUAL "0" ) + add_llvm_definitions( /MP ) + else() + if (MSVC10) + message(FATAL_ERROR + "Due to a bug in CMake only 0 and 1 is supported for " + "LLVM_COMPILER_JOBS when generating for Visual Studio 2010") + else() + message(STATUS "Number of parallel compiler jobs set to " ${LLVM_COMPILER_JOBS}) + add_llvm_definitions( /MP${LLVM_COMPILER_JOBS} ) + endif() + endif() + else() + message(STATUS "Parallel compilation disabled") + endif() +endif() + if( MSVC ) include(ChooseMSVCCRT) + if( NOT (${CMAKE_VERSION} VERSION_LESS 2.8.11) ) + # set stack reserved size to ~10MB + # CMake previously automatically set this value for MSVC builds, but the + # behavior was changed in CMake 2.8.11 (Issue 12437) to use the MSVC default + # value (1 MB) which is not enough for us in tasks such as parsing recursive + # C++ templates in Clang. + set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10000000") + endif() + + if( MSVC10 ) + # MSVC 10 will complain about headers in the STL not being exported, but + # will not complain in MSVC 11. + add_llvm_definitions( + -wd4275 # Suppress 'An exported class was derived from a class that was not exported.' + ) + elseif( MSVC11 ) + add_llvm_definitions(-D_VARIADIC_MAX=10) + endif() + # Add definitions that make MSVC much less annoying. add_llvm_definitions( # For some reason MS wants to deprecate a bunch of standard functions... @@ -115,28 +205,29 @@ if( MSVC ) -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS + # Disabled warnings. -wd4146 # Suppress 'unary minus operator applied to unsigned type, result still unsigned' -wd4180 # Suppress 'qualifier applied to function type has no meaning; ignored' - -wd4224 # Suppress 'nonstandard extension used : formal parameter 'identifier' was previously defined as a type' -wd4244 # Suppress ''argument' : conversion from 'type1' to 'type2', possible loss of data' -wd4267 # Suppress ''var' : conversion from 'size_t' to 'type', possible loss of data' - -wd4275 # Suppress 'An exported class was derived from a class that was not exported.' - -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' -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' - -wd4715 # Suppress ''function' : not all control paths return a value' -wd4800 # Suppress ''type' : forcing value to bool 'true' or 'false' (performance warning)' - -wd4065 # Suppress 'switch statement contains 'default' but no 'case' labels' + -wd4291 # Suppress ''declaration' : no matching operator delete found; memory will not be freed if initialization throws an exception' + + # Promoted warnings. + -w14062 # Promote 'enumerator in switch of enum is not handled' to level 1 warning. - -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) - add_llvm_definitions( /W4 /Wall ) + add_llvm_definitions( /W4 ) if (LLVM_ENABLE_PEDANTIC) # No MSVC equivalent available endif (LLVM_ENABLE_PEDANTIC) @@ -144,19 +235,94 @@ if( MSVC ) if (LLVM_ENABLE_WERROR) add_llvm_definitions( /WX ) endif (LLVM_ENABLE_WERROR) -elseif( CMAKE_COMPILER_IS_GNUCXX ) +elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE ) if (LLVM_ENABLE_WARNINGS) - add_llvm_definitions( -Wall -W -Wno-unused-parameter -Wwrite-strings ) - if (LLVM_ENABLE_PEDANTIC) - add_llvm_definitions( -pedantic -Wno-long-long ) - endif (LLVM_ENABLE_PEDANTIC) + append("-Wall -W -Wno-unused-parameter -Wwrite-strings" CMAKE_C_FLAGS 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() + + append_if(LLVM_ENABLE_PEDANTIC "-pedantic -Wno-long-long" CMAKE_C_FLAGS CMAKE_CXX_FLAGS) + check_cxx_compiler_flag("-Werror -Wcovered-switch-default" CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG) + append_if(CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG "-Wcovered-switch-default" CMAKE_CXX_FLAGS) + check_c_compiler_flag("-Werror -Wcovered-switch-default" C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG) + append_if(C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG "-Wcovered-switch-default" CMAKE_C_FLAGS) + append_if(USE_NO_UNINITIALIZED "-Wno-uninitialized" CMAKE_CXX_FLAGS) + append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS) + check_cxx_compiler_flag("-Werror -Wnon-virtual-dtor" CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG) + append_if(CXX_SUPPORTS_NON_VIRTUAL_DTOR_FLAG "-Wnon-virtual-dtor" CMAKE_CXX_FLAGS) endif (LLVM_ENABLE_WARNINGS) if (LLVM_ENABLE_WERROR) add_llvm_definitions( -Werror ) endif (LLVM_ENABLE_WERROR) + if (LLVM_ENABLE_CXX11) + check_cxx_compiler_flag("-std=c++11" CXX_SUPPORTS_CXX11) + append_if(CXX_SUPPORTS_CXX11 "-std=c++11" CMAKE_CXX_FLAGS) + endif (LLVM_ENABLE_CXX11) + if(LLVM_ENABLE_LIBCXX) + check_cxx_compiler_flag("-stdlib=libc++" CXX_SUPPORTS_STDLIB) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_CXX_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_EXE_LINKER_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_SHARED_LINKER_FLAGS) + append_if(CXX_SUPPORTS_STDLIB "-stdlib=libc++" CMAKE_MODULE_LINKER_FLAGS) + endif () endif( MSVC ) -add_llvm_definitions( -D__STDC_LIMIT_MACROS ) +macro(append_common_sanitizer_flags) + # Append -fno-omit-frame-pointer and turn on debug info to get better + # stack traces. + add_flag_if_supported("-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") + 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") + 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() + add_flag_or_print_warning("-fsanitize=address") + elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?") + append_common_sanitizer_flags() + add_flag_or_print_warning("-fsanitize=memory") + if(LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins") + add_flag_or_print_warning("-fsanitize-memory-track-origins") + endif() + else() + message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}") + endif() + else() + message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.") + endif() +endif() + +# Turn on -gsplit-dwarf if requested +if(LLVM_USE_SPLIT_DWARF) + add_llvm_definitions("-gsplit-dwarf") +endif() + add_llvm_definitions( -D__STDC_CONSTANT_MACROS ) +add_llvm_definitions( -D__STDC_FORMAT_MACROS ) +add_llvm_definitions( -D__STDC_LIMIT_MACROS ) -option(LLVM_INCLUDE_TESTS "Generate build targets for the LLVM unit tests." ON) +# clang doesn't print colored diagnostics when invoked from Ninja +if (UNIX AND + CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND + CMAKE_GENERATOR STREQUAL "Ninja") + append("-fcolor-diagnostics" CMAKE_C_FLAGS CMAKE_CXX_FLAGS) +endif()