Source/cmake/OptionsCommon.cmake

   1 add_definitions(-DBUILDING_WITH_CMAKE=1)
   2 add_definitions(-DHAVE_CONFIG_H=1)
   3
   4 # CODE_GENERATOR_PREPROCESSOR_WITH_LINEMARKERS only matters with GCC >= 4.7.0.  Since this
   5 # version, -P does not output empty lines, which currently breaks make_names.pl in
   6 # WebCore. Investigating whether make_names.pl should be changed instead is left as an exercise to
   7 # the reader.
   8 if (MSVC)
   9     # FIXME: Some codegenerators don't support paths with spaces. So use the executable name only.
  10     get_filename_component(CODE_GENERATOR_PREPROCESSOR_EXECUTABLE ${CMAKE_CXX_COMPILER} ABSOLUTE)
  11     set(CODE_GENERATOR_PREPROCESSOR "\"${CODE_GENERATOR_PREPROCESSOR_EXECUTABLE}\" /nologo /EP")
  12     set(CODE_GENERATOR_PREPROCESSOR_WITH_LINEMARKERS "${CODE_GENERATOR_PREPROCESSOR}")
  13 else ()
  14     set(CODE_GENERATOR_PREPROCESSOR "${CMAKE_CXX_COMPILER} -E -P -x c++")
  15     set(CODE_GENERATOR_PREPROCESSOR_WITH_LINEMARKERS "${CMAKE_CXX_COMPILER} -E -x c++")
  16 endif ()
  17
  18 option(USE_THIN_ARCHIVES "Produce all static libraries as thin archives" ON)
  19 if (USE_THIN_ARCHIVES)
  20     execute_process(COMMAND ${CMAKE_AR} -V OUTPUT_VARIABLE AR_VERSION)
  21     if ("${AR_VERSION}" MATCHES "^GNU ar")
  22         set(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> crT <TARGET> <LINK_FLAGS> <OBJECTS>")
  23         set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> crT <TARGET> <LINK_FLAGS> <OBJECTS>")
  24         set(CMAKE_CXX_ARCHIVE_APPEND "<CMAKE_AR> rT <TARGET> <LINK_FLAGS> <OBJECTS>")
  25         set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> rT <TARGET> <LINK_FLAGS> <OBJECTS>")
  26     endif ()
  27 endif ()
  28
  29 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
  30 define_property(TARGET PROPERTY FOLDER INHERITED BRIEF_DOCS "folder" FULL_DOCS "IDE folder name")
  31
  32 if (COMPILER_IS_GCC_OR_CLANG)
  33     set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-exceptions -fno-strict-aliasing")
  34     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-exceptions -fno-strict-aliasing -fno-rtti")
  35     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
  36 endif ()
  37
  38 if (COMPILER_IS_CLANG AND CMAKE_GENERATOR STREQUAL "Ninja")
  39     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fcolor-diagnostics")
  40     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics")
  41 endif ()
  42
  43 # Ensure that the default include system directories are added to the list of CMake implicit includes.
  44 # This workarounds an issue that happens when using GCC 6 and using system includes (-isystem).
  45 # For more details check: https://bugs.webkit.org/show_bug.cgi?id=161697
  46 macro(DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _compiler _flags _result)
  47     file(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n")
  48     separate_arguments(_buildFlags UNIX_COMMAND "${_flags}")
  49     execute_process(COMMAND ${_compiler} ${_buildFlags} -v -E -x ${_lang} -dD dummy
  50                     WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles OUTPUT_QUIET
  51                     ERROR_VARIABLE _gccOutput)
  52     file(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy")
  53     if ("${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+) *\n *End of (search) list")
  54         set(${_result} ${CMAKE_MATCH_1})
  55         string(REPLACE "\n" " " ${_result} "${${_result}}")
  56         separate_arguments(${_result})
  57     endif ()
  58 endmacro()
  59
  60 if (CMAKE_COMPILER_IS_GNUCC)
  61    DETERMINE_GCC_SYSTEM_INCLUDE_DIRS("c" "${CMAKE_C_COMPILER}" "${CMAKE_C_FLAGS}" SYSTEM_INCLUDE_DIRS)
  62    set(CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES} ${SYSTEM_INCLUDE_DIRS})
  63 endif ()
  64
  65 if (CMAKE_COMPILER_IS_GNUCXX)
  66    DETERMINE_GCC_SYSTEM_INCLUDE_DIRS("c++" "${CMAKE_CXX_COMPILER}" "${CMAKE_CXX_FLAGS}" SYSTEM_INCLUDE_DIRS)
  67    set(CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES} ${SYSTEM_INCLUDE_DIRS})
  68 endif ()
  69
  70 # Detect Cortex-A53 core if CPU is ARM64 and OS is Linux.
  71 # Query /proc/cpuinfo for each available core and check reported CPU part number: 0xd03 signals Cortex-A53.
  72 # (see Main ID Register in ARM Cortex-A53 MPCore Processor Technical Reference Manual)
  73 set(WTF_CPU_ARM64_CORTEXA53_INITIALVALUE OFF)
  74 if (WTF_CPU_ARM64 AND (${CMAKE_SYSTEM_NAME} STREQUAL "Linux"))
  75     execute_process(COMMAND nproc OUTPUT_VARIABLE PROC_COUNT)
  76     math(EXPR PROC_MAX ${PROC_COUNT}-1)
  77     foreach (PROC_ID RANGE ${PROC_MAX})
  78         execute_process(COMMAND taskset -c ${PROC_ID} grep "^CPU part" /proc/cpuinfo OUTPUT_VARIABLE PROC_PART)
  79         if (PROC_PART MATCHES "0xd03")
  80             set(WTF_CPU_ARM64_CORTEXA53_INITIALVALUE ON)
  81             break ()
  82         endif ()
  83     endforeach ()
  84 endif ()
  85 option(WTF_CPU_ARM64_CORTEXA53 "Enable Cortex-A53-specific code paths" ${WTF_CPU_ARM64_CORTEXA53_INITIALVALUE})
  86
  87 if (WTF_CPU_ARM64_CORTEXA53)
  88     if (NOT WTF_CPU_ARM64)
  89         message(FATAL_ERROR "WTF_CPU_ARM64_CORTEXA53 set without WTF_CPU_ARM64")
  90     endif ()
  91     include(TestCXXAcceptsFlag)
  92     CHECK_CXX_ACCEPTS_FLAG(-mfix-cortex-a53-835769 CXX_ACCEPTS_MFIX_CORTEX_A53_835769)
  93     if (CXX_ACCEPTS_MFIX_CORTEX_A53_835769)
  94         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfix-cortex-a53-835769")
  95         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfix-cortex-a53-835769")
  96         message(STATUS "Enabling Cortex-A53 workaround for compiler and disabling GNU gold linker, because it doesn't support this workaround.")
  97     endif ()
  98 endif ()
  99
 100 EXPOSE_VARIABLE_TO_BUILD(WTF_CPU_ARM64_CORTEXA53)
 101
 102 set(ARM_TRADITIONAL_DETECTED FALSE)
 103 if (WTF_CPU_ARM)
 104     set(ARM_THUMB2_TEST_SOURCE
 105     "
 106     #if !defined(thumb2) && !defined(__thumb2__)
 107     #error \"Thumb2 instruction set isn't available\"
 108     #endif
 109     int main() {}
 110    ")
 111
 112     include(CheckCXXSourceCompiles)
 113     CHECK_CXX_SOURCE_COMPILES("${ARM_THUMB2_TEST_SOURCE}" ARM_THUMB2_DETECTED)
 114     if (NOT ARM_THUMB2_DETECTED)
 115         set(ARM_TRADITIONAL_DETECTED TRUE)
 116         # See https://bugs.webkit.org/show_bug.cgi?id=159880#c4 for details.
 117         message(STATUS "Disabling GNU gold linker, because it doesn't support ARM instruction set properly.")
 118     endif ()
 119 endif ()
 120
 121 # Use ld.gold if it is available and isn't disabled explicitly
 122 include(CMakeDependentOption)
 123 CMAKE_DEPENDENT_OPTION(USE_LD_GOLD "Use GNU gold linker" ON
 124                        "NOT CXX_ACCEPTS_MFIX_CORTEX_A53_835769;NOT ARM_TRADITIONAL_DETECTED" OFF)
 125 if (USE_LD_GOLD)
 126     execute_process(COMMAND ${CMAKE_C_COMPILER} -fuse-ld=gold -Wl,--version ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
 127     if ("${LD_VERSION}" MATCHES "GNU gold")
 128         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
 129         set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
 130     else ()
 131         message(WARNING "GNU gold linker isn't available, using the default system linker.")
 132         set(USE_LD_GOLD OFF)
 133     endif ()
 134 endif ()
 135
 136 set(ENABLE_DEBUG_FISSION_DEFAULT OFF)
 137 if (USE_LD_GOLD AND CMAKE_BUILD_TYPE STREQUAL "Debug")
 138     include(TestCXXAcceptsFlag)
 139     CHECK_CXX_ACCEPTS_FLAG(-gsplit-dwarf CXX_ACCEPTS_GSPLIT_DWARF)
 140     if (CXX_ACCEPTS_GSPLIT_DWARF)
 141         set(ENABLE_DEBUG_FISSION_DEFAULT ON)
 142     endif ()
 143 endif ()
 144
 145 option(DEBUG_FISSION "Use Debug Fission support" ${ENABLE_DEBUG_FISSION_DEFAULT})
 146
 147 if (DEBUG_FISSION)
 148     if (NOT USE_LD_GOLD)
 149         message(FATAL_ERROR "Need GNU gold linker for Debug Fission support")
 150     endif ()
 151     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -gsplit-dwarf")
 152     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -gsplit-dwarf")
 153     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
 154     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
 155 endif ()
 156
 157 if (COMPILER_IS_CLANG)
 158     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Qunused-arguments")
 159     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments")
 160 endif ()
 161
 162 string(TOLOWER ${CMAKE_HOST_SYSTEM_PROCESSOR} LOWERCASE_CMAKE_HOST_SYSTEM_PROCESSOR)
 163 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" AND "${LOWERCASE_CMAKE_HOST_SYSTEM_PROCESSOR}" MATCHES "(i[3-6]86|x86|armhf)")
 164     # To avoid out of memory when building with debug option in 32bit system.
 165     # See https://bugs.webkit.org/show_bug.cgi?id=77327
 166     set(CMAKE_SHARED_LINKER_FLAGS_DEBUG "-Wl,--no-keep-memory ${CMAKE_SHARED_LINKER_FLAGS_DEBUG}")
 167 endif ()
 168
 169 if (NOT MSVC)
 170     string(REGEX MATCHALL "-fsanitize=[^ ]*" ENABLED_COMPILER_SANITIZERS ${CMAKE_CXX_FLAGS})
 171 endif ()
 172
 173 if (UNIX AND NOT APPLE AND NOT ENABLED_COMPILER_SANITIZERS)
 174     set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_SHARED_LINKER_FLAGS}")
 175 endif ()
 176
 177 if (USE_ARM_LLVM_DISASSEMBLER)
 178     find_package(LLVM REQUIRED)
 179     SET_AND_EXPOSE_TO_BUILD(HAVE_LLVM TRUE)
 180 endif ()
 181
 182 # Enable the usage of OpenMP.
 183 #  - At this moment, OpenMP is only used as an alternative implementation
 184 #    to native threads for the parallelization of the SVG filters.
 185 if (USE_OPENMP)
 186     find_package(OpenMP REQUIRED)
 187     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
 188     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
 189 endif ()
 190
 191 # GTK uses the GNU installation directories as defaults.
 192 if (NOT PORT STREQUAL "GTK")
 193     set(LIB_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Absolute path to library installation directory")
 194     set(EXEC_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Absolute path to executable installation directory")
 195     set(LIBEXEC_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Absolute path to install executables executed by the library")
 196 endif ()
 197
 198 # The Ninja generator does not yet know how to build archives in pieces, and so response
 199 # files must be used to deal with very long linker command lines.
 200 # See https://bugs.webkit.org/show_bug.cgi?id=129771
 201 # The Apple Toolchain doesn't support response files.
 202 if (NOT APPLE)
 203     set(CMAKE_NINJA_FORCE_RESPONSE_FILE 1)
 204 endif ()
 205
 206 # Macros for determining HAVE values.
 207 include(CheckIncludeFile)
 208 include(CheckFunctionExists)
 209 include(CheckSymbolExists)
 210 include(CheckStructHasMember)
 211
 212 macro(_HAVE_CHECK_INCLUDE _variable _header)
 213     check_include_file(${_header} ${_variable}_value)
 214     SET_AND_EXPOSE_TO_BUILD(${_variable} ${_variable}_value)
 215 endmacro()
 216
 217 macro(_HAVE_CHECK_FUNCTION _variable _function)
 218     check_function_exists(${_function} ${_variable}_value)
 219     SET_AND_EXPOSE_TO_BUILD(${_variable} ${_variable}_value)
 220 endmacro()
 221
 222 macro(_HAVE_CHECK_SYMBOL _variable _symbol _header)
 223     check_symbol_exists(${_symbol} ${_header} ${_variable}_value)
 224     SET_AND_EXPOSE_TO_BUILD(${_variable} ${_variable}_value)
 225 endmacro()
 226
 227 macro(_HAVE_CHECK_STRUCT _variable _struct _member _header)
 228     check_struct_has_member(${_struct} ${_member} ${_header} ${_variable}_value)
 229     SET_AND_EXPOSE_TO_BUILD(${_variable} ${_variable}_value)
 230 endmacro()
 231
 232 # Check whether features.h header exists.
 233 # Including glibc's one defines __GLIBC__, that is used in Platform.h
 234 _HAVE_CHECK_INCLUDE(HAVE_FEATURES_H features.h)
 235
 236 # Check for headers
 237 _HAVE_CHECK_INCLUDE(HAVE_ERRNO_H errno.h)
 238 _HAVE_CHECK_INCLUDE(HAVE_LANGINFO_H langinfo.h)
 239 _HAVE_CHECK_INCLUDE(HAVE_MMAP sys/mman.h)
 240 _HAVE_CHECK_INCLUDE(HAVE_PTHREAD_NP_H pthread_np.h)
 241 _HAVE_CHECK_INCLUDE(HAVE_STRINGS_H strings.h)
 242 _HAVE_CHECK_INCLUDE(HAVE_SYS_PARAM_H sys/param.h)
 243 _HAVE_CHECK_INCLUDE(HAVE_SYS_TIME_H sys/time.h)
 244 _HAVE_CHECK_INCLUDE(HAVE_SYS_TIMEB_H sys/timeb.h)
 245
 246 # Check for functions
 247 _HAVE_CHECK_FUNCTION(HAVE_ALIGNED_MALLOC _aligned_malloc)
 248 _HAVE_CHECK_FUNCTION(HAVE_ISDEBUGGERPRESENT IsDebuggerPresent)
 249 _HAVE_CHECK_FUNCTION(HAVE_STRNSTR strnstr)
 250 _HAVE_CHECK_FUNCTION(HAVE_TIMEGM timegm)
 251 _HAVE_CHECK_FUNCTION(HAVE_VASPRINTF vasprintf)
 252
 253 # Check for symbols
 254 # Windows has signal.h but is missing symbols that are used in calls to signal.
 255 _HAVE_CHECK_SYMBOL(HAVE_SIGNAL_H SIGTRAP signal.h)
 256
 257 # Check for struct members
 258 _HAVE_CHECK_STRUCT(HAVE_STAT_BIRTHTIME "struct stat" st_birthtime sys/stat.h)
 259 _HAVE_CHECK_STRUCT(HAVE_TM_GMTOFF "struct tm" tm_gmtoff time.h)
 260 _HAVE_CHECK_STRUCT(HAVE_TM_ZONE "struct tm" tm_zone time.h)