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()
+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()
+
+ # Also test that we aren't using too old of a version of libstdc++ with the
+ # Clang compiler. This is tricky as there is no real way to check the
+ # version of libstdc++ directly. Instead we test for a known bug in
+ # libstdc++4.6 that is fixed in libstdc++4.7.
+ if(NOT LLVM_ENABLE_LIBCXX)
+ 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);
+int main() { return (float)x; }"
+ LLVM_NO_OLD_LIBSTDCXX)
+ if(NOT LLVM_NO_OLD_LIBSTDCXX)
+ message(FATAL_ERROR "Host Clang must be able to find libstdc++4.7 or newer!")
+ endif()
+ set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
+ set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
+ endif()
+ elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+ if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0)
+ message(FATAL_ERROR "Host Visual Studio must be at least 2012 (MSVC 17.0)")
+ endif()
+ endif()
+endif()
+
if( LLVM_ENABLE_ASSERTIONS )
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
if( NOT MSVC )
if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" )
add_definitions( -UNDEBUG )
# Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines.
- string (REGEX REPLACE "(^| )[/-]D *NDEBUG($| )" " "
+ 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" )
endif()
if(WIN32)
+ set(LLVM_HAVE_LINK_VERSION_SCRIPT 0)
if(CYGWIN)
set(LLVM_ON_WIN32 0)
set(LLVM_ON_UNIX 1)
set(LLVM_ON_WIN32 1)
set(LLVM_ON_UNIX 0)
endif(CYGWIN)
- set(LTDL_SHLIB_EXT ".dll")
- set(EXEEXT ".exe")
# Maximum path length is 160 for non-unicode paths
set(MAXPATHLEN 160)
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)
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(${flag} CXX_SUPPORTS_FLAG)
if( MSVC )
include(ChooseMSVCCRT)
- if( MSVC11 )
- add_llvm_definitions(-D_VARIADIC_MAX=10)
+ if( NOT (${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...
-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'
-wd4800 # Suppress ''type' : forcing value to bool 'true' or 'false' (performance warning)'
- -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'
# Promoted warnings.
-w14062 # Promote 'enumerator in switch of enum is not handled' to level 1 warning.
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 )
macro(append_common_sanitizer_flags)
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.
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 )
CMAKE_GENERATOR STREQUAL "Ninja")
append("-fcolor-diagnostics" CMAKE_C_FLAGS CMAKE_CXX_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 ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+ append("-ffunction-sections -fdata-sections" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
+ endif()
+endif()
+
+if(MSVC)
+ # Remove flags here, for exceptions and RTTI.
+ # Each target property of source proerty should be responsible to control them.
+ # CL.EXE complains to override flags like "/GR /GR-".
+ string(REGEX REPLACE "(^| ) */EH[-cs]+ *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+ string(REGEX REPLACE "(^| ) */GR-? *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+endif()
projects / oota-llvm.git / blobdiff