X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=cmake%2Fmodules%2FHandleLLVMOptions.cmake;h=e3c99254ac8581b2620dc731ebdc6f6340b9c160;hb=8062fa2d539aa471b72a8ac664bd75588f8d067d;hp=811ee9224352a381ab2d048e4ffbb3c4685607e6;hpb=7c6be4d5586aa365c8f52289ffddf57b87da4da7;p=oota-llvm.git diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake index 811ee922435..e3c99254ac8 100644 --- a/cmake/modules/HandleLLVMOptions.cmake +++ b/cmake/modules/HandleLLVMOptions.cmake @@ -14,6 +14,45 @@ 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 +std::atomic 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 ${OLD_CMAKE_REQUIRED_LIBRARIES}) + endif() + elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC") + if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0) + message(FATAL_ERROR "Host Visual Studio must be at least 2012 (MSVC 17.0)") + endif() + endif() +endif() + if( LLVM_ENABLE_ASSERTIONS ) # MSVC doesn't like _DEBUG on release builds. See PR 4379. if( NOT MSVC ) @@ -24,13 +63,13 @@ if( LLVM_ENABLE_ASSERTIONS ) if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" ) add_definitions( -UNDEBUG ) # Also remove /D NDEBUG to avoid MSVC warnings about conflicting defines. - set(REGEXP_NDEBUG "(^| )[/-]D *NDEBUG($| )") - 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}") + 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" ) @@ -41,6 +80,7 @@ else() endif() if(WIN32) + set(LLVM_HAVE_LINK_VERSION_SCRIPT 0) if(CYGWIN) set(LLVM_ON_WIN32 0) set(LLVM_ON_UNIX 1) @@ -48,8 +88,6 @@ if(WIN32) 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) @@ -57,11 +95,10 @@ 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) @@ -69,6 +106,10 @@ 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) @@ -250,6 +291,13 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE ) 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) @@ -301,3 +349,21 @@ if (UNIX AND 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 ${CMAKE_SYSTEM_NAME} MATCHES "Darwin") + append("-ffunction-sections -fdata-sections" CMAKE_C_FLAGS CMAKE_CXX_FLAGS) + endif() +endif() + +if(MSVC) + # Remove flags here, for exceptions and RTTI. + # Each target property or source proerty should be responsible to control them. + # CL.EXE complains to override flags like "/GR /GR-". + string(REGEX REPLACE "(^| ) */EH[-cs]+ *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") + string(REGEX REPLACE "(^| ) */GR-? *( |$)" "\\1 \\2" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") +endif()