index 771ea852067038a4ed49f6ab53b9e82c64976875..2ee0dd5b1b73414497ed20ca9d899eaf4660cb41 100644 (file)
# options and executing the appropriate CMake commands to realize the users'
# selections.
+# This is commonly needed so make sure it's defined before we include anything
+# else.
+string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
+
include(HandleLLVMStdlib)
include(AddLLVMDefinitions)
include(CheckCCompilerFlag)
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
set(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
set(CMAKE_REQUIRED_FLAGS "-std=c++0x")
- if (ANDROID)
- set(CMAKE_REQUIRED_LIBRARIES "atomic")
- endif()
check_cxx_source_compiles("
#include <atomic>
std::atomic<float> x(0.0f);
set(LLVM_ON_WIN32 1)
set(LLVM_ON_UNIX 0)
endif(CYGWIN)
- # Maximum path length is 160 for non-unicode paths
- set(MAXPATHLEN 160)
else(WIN32)
if(UNIX)
set(LLVM_ON_WIN32 0)
else(APPLE)
set(LLVM_HAVE_LINK_VERSION_SCRIPT 1)
endif(APPLE)
- # FIXME: Maximum path length is currently set to 'safe' fixed value
- set(MAXPATHLEN 2024)
else(UNIX)
MESSAGE(SEND_ERROR "Unable to determine platform")
endif(UNIX)
function(add_flag_or_print_warning flag name)
check_c_compiler_flag("-Werror ${flag}" "C_SUPPORTS_${name}")
check_cxx_compiler_flag("-Werror ${flag}" "CXX_SUPPORTS_${name}")
- if ("C_SUPPORTS_${name}" AND "CXX_SUPPORTS_${name}")
+ if (C_SUPPORTS_${name} AND CXX_SUPPORTS_${name})
message(STATUS "Building with ${flag}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
endif( LLVM_BUILD_32_BITS )
endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 )
+if (LLVM_BUILD_STATIC)
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
+endif()
+
if( XCODE )
# For Xcode enable several build settings that correspond to
# many warnings that are on by default in Clang but are
-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
elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
if (LLVM_ENABLE_WARNINGS)
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
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_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)
+
+ # 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.
+ 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)
# 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 ${CMAKE_REQUIRED_FLAGS} -Werror -Wcomment)
+ set(CMAKE_REQUIRED_FLAGS "${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})
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 ${CMAKE_REQUIRED_FLAGS})
+ set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fmodules -fcxx-modules")
+ # 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_if(CXX_SUPPORTS_MODULES "-fmodules" CMAKE_C_FLAGS)
+ append_if(CXX_SUPPORTS_MODULES "-fmodules -fcxx-modules" CMAKE_CXX_FLAGS)
+ else()
+ message(FATAL_ERROR "LLVM_ENABLE_MODULES is not supported by this compiler")
+ endif()
+ endif(LLVM_ENABLE_MODULES)
endif( MSVC )
macro(append_common_sanitizer_flags)
if (LLVM_ON_UNIX)
if (LLVM_USE_SANITIZER STREQUAL "Address")
append_common_sanitizer_flags()
- add_flag_or_print_warning("-fsanitize=address" FSANITIZE_ADDRESS)
+ append("-fsanitize=address" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?")
append_common_sanitizer_flags()
- add_flag_or_print_warning("-fsanitize=memory" FSANITIZE_MEMORY)
+ append("-fsanitize=memory" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
if(LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
- add_flag_or_print_warning("-fsanitize-memory-track-origins" FSANITIZE_MEMORY_TRACK_ORIGINS)
+ 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"
+ CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
+ elseif (LLVM_USE_SANITIZER STREQUAL "Thread")
+ append_common_sanitizer_flags()
+ append("-fsanitize=thread" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
else()
message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
endif()
# Turn on -gsplit-dwarf if requested
if(LLVM_USE_SPLIT_DWARF)
- add_llvm_definitions("-gsplit-dwarf")
+ add_definitions("-gsplit-dwarf")
endif()
add_llvm_definitions( -D__STDC_CONSTANT_MACROS )
string(REGEX REPLACE "(^| ) */GR-? *( |$)" "\\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()
+
# Plugin support
# FIXME: Make this configurable.
if(WIN32 OR CYGWIN)
- # DLL platform(s) don't support plugins.
- set(LLVM_ENABLE_PLUGINS OFF)
+ if(BUILD_SHARED_LIBS)
+ set(LLVM_ENABLE_PLUGINS ON)
+ else()
+ set(LLVM_ENABLE_PLUGINS OFF)
+ endif()
else()
set(LLVM_ENABLE_PLUGINS ON)
endif()