diff options
Diffstat (limited to 'chromium/buildtools/third_party/libc++/trunk/CMakeLists.txt')
| -rw-r--r-- | chromium/buildtools/third_party/libc++/trunk/CMakeLists.txt | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/chromium/buildtools/third_party/libc++/trunk/CMakeLists.txt b/chromium/buildtools/third_party/libc++/trunk/CMakeLists.txt new file mode 100644 index 00000000000..e6c96f64711 --- /dev/null +++ b/chromium/buildtools/third_party/libc++/trunk/CMakeLists.txt @@ -0,0 +1,403 @@ +# See www/CMake.html for instructions on how to build libcxx with CMake. + +#=============================================================================== +# Setup Project +#=============================================================================== +cmake_minimum_required(VERSION 2.8) + +if(POLICY CMP0042) + cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default +endif() +if(POLICY CMP0022) + cmake_policy(SET CMP0022 NEW) # Required when interacting with LLVM and Clang +endif() + +project(libcxx CXX C) + +set(PACKAGE_NAME libcxx) +set(PACKAGE_VERSION trunk-svn) +set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}") +set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org") + +# Add path for custom modules +set(CMAKE_MODULE_PATH + "${CMAKE_CURRENT_SOURCE_DIR}/cmake" + "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules" + ${CMAKE_MODULE_PATH} + ) + +# Require out of source build. +include(MacroEnsureOutOfSourceBuild) +MACRO_ENSURE_OUT_OF_SOURCE_BUILD( + "${PROJECT_NAME} requires an out of source build. Please create a separate + build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there." + ) + +# Find the LLVM sources and simulate LLVM CMake options. +include(HandleOutOfTreeLLVM) +if (LIBCXX_BUILT_STANDALONE AND NOT LLVM_FOUND) + message(WARNING "UNSUPPORTED LIBCXX CONFIGURATION DETECTED: " + "llvm-config not found and LLVM_PATH not defined.\n" + "Reconfigure with -DLLVM_CONFIG=path/to/llvm-config " + "or -DLLVM_PATH=path/to/llvm-source-root.") +endif() + +#=============================================================================== +# Setup CMake Options +#=============================================================================== + +# Basic options --------------------------------------------------------------- +option(LIBCXX_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON) +option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON) + +option(LIBCXX_INCLUDE_TESTS "Build the libc++ tests." ${LLVM_INCLUDE_TESTS}) +option(LIBCXX_INCLUDE_DOCS "Build the libc++ documentation." ${LLVM_INCLUDE_DOCS}) +set(LIBCXX_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING + "Define suffix of library directory name (32/64)") +option(LIBCXX_INSTALL_HEADERS "Install the libc++ headers." ON) +option(LIBCXX_INSTALL_LIBRARY "Install the libc++ library." ON) +option(LIBCXX_INSTALL_SUPPORT_HEADERS "Install libc++ support headers." ON) +set(LIBCXX_ABI_VERSION 1 CACHE STRING "ABI version of libc++.") +option(LIBCXX_ABI_UNSTABLE "Unstable ABI of libc++." OFF) + +# ABI Library options --------------------------------------------------------- +set(LIBCXX_CXX_ABI "${LIBCXX_CXX_ABI}" CACHE STRING + "Specify C++ ABI library to use." FORCE) +set(CXXABIS none libcxxabi libcxxrt libstdc++ libsupc++) +set_property(CACHE LIBCXX_CXX_ABI PROPERTY STRINGS ;${CXXABIS}) + +# Setup the default options if LIBCXX_CXX_ABI is not specified. +if (NOT LIBCXX_CXX_ABI) + if (NOT DEFINED LIBCXX_BUILT_STANDALONE AND + IS_DIRECTORY "${CMAKE_SOURCE_DIR}/projects/libcxxabi") + set(LIBCXX_CXX_ABI_LIBNAME "libcxxabi") + set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${CMAKE_SOURCE_DIR}/projects/libcxxabi/include") + set(LIBCXX_CXX_ABI_INTREE 1) + else () + set(LIBCXX_CXX_ABI_LIBNAME "none") + endif () +else () + set(LIBCXX_CXX_ABI_LIBNAME "${LIBCXX_CXX_ABI}") +endif () + +# Use a static copy of the ABI library when linking libc++. This option +# cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT. +option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY "Statically link the ABI library" OFF) + +# Generate and install a linker script inplace of libc++.so. The linker script +# will link libc++ to the correct ABI library. This option is on by default +# On UNIX platforms other than Apple unless 'LIBCXX_ENABLE_STATIC_ABI_LIBRARY' +# is on. This option is also disabled when the ABI library is not specified +# or is specified to be "none". +set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE OFF) +if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_ENABLE_STATIC_ABI_LIBRARY + AND NOT LIBCXX_CXX_ABI_LIBNAME STREQUAL "none" + AND PYTHONINTERP_FOUND) + set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE ON) +endif() + +option(LIBCXX_ENABLE_ABI_LINKER_SCRIPT + "Use and install a linker script for the given ABI library" + ${ENABLE_LINKER_SCRIPT_DEFAULT_VALUE}) + +# Build libc++abi with libunwind. We need this option to determine whether to +# link with libunwind or libgcc_s while running the test cases. +option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF) + +# Target options -------------------------------------------------------------- +option(LIBCXX_BUILD_32_BITS "Build 32 bit libc++." ${LLVM_BUILD_32_BITS}) +set(LIBCXX_SYSROOT "" CACHE STRING "Use alternate sysroot.") +set(LIBCXX_GCC_TOOLCHAIN "" CACHE STRING "Use alternate GCC toolchain.") + +# Feature options ------------------------------------------------------------- +option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON) +option(LIBCXX_ENABLE_RTTI "Use run time type information." ON) +option(LIBCXX_ENABLE_GLOBAL_FILESYSTEM_NAMESPACE "Build libc++ with support for the global filesystem namespace." ON) +option(LIBCXX_ENABLE_STDIN "Build libc++ with support for stdin/std::cin." ON) +option(LIBCXX_ENABLE_STDOUT "Build libc++ with support for stdout/std::cout." ON) +option(LIBCXX_ENABLE_THREADS "Build libc++ with support for threads." ON) +option(LIBCXX_ENABLE_THREAD_UNSAFE_C_FUNCTIONS "Build libc++ with support for thread-unsafe C functions" ON) +option(LIBCXX_ENABLE_MONOTONIC_CLOCK + "Build libc++ with support for a monotonic clock. + This option may only be set to OFF when LIBCXX_ENABLE_THREADS=OFF." ON) +option(LIBCXX_HAS_MUSL_LIBC "Build libc++ with support for the Musl C library" OFF) + +# Misc options ---------------------------------------------------------------- +# FIXME: Turn -pedantic back ON. It is currently off because it warns +# about #include_next which is used everywhere. +option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF) +option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF) + +option(LIBCXX_GENERATE_COVERAGE "Enable generating code coverage." OFF) +set(LIBCXX_COVERAGE_LIBRARY "" CACHE STRING + "The Profile-rt library used to build with code coverage") + +# Don't allow a user to accidentally overwrite the system libc++ installation on Darwin. +# If the user specifies -DCMAKE_INSTALL_PREFIX=/usr the install rules for libc++ +# will not be generated and a warning will be issued. +option(LIBCXX_OVERRIDE_DARWIN_INSTALL "Enable overwriting darwins libc++ installation." OFF) +mark_as_advanced(LIBCXX_OVERRIDE_DARWIN_INSTALL) # Don't show this option by default. + +if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT LIBCXX_OVERRIDE_DARWIN_INSTALL) + if ("${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr") + message(WARNING "Disabling libc++ install rules because installation would " + "overwrite the systems installation. Configure with " + "-DLIBCXX_OVERRIDE_DARWIN_INSTALL=ON to suppress this behaviour.") + mark_as_advanced(CLEAR LIBCXX_OVERRIDE_DARWIN_INSTALL) # Show the override option. + set(LIBCXX_INSTALL_HEADERS OFF) + set(LIBCXX_INSTALL_LIBRARY OFF) + endif() +endif() + +set(LIBCXX_CONFIGURE_IDE_DEFAULT OFF) +if (XCODE OR MSVC_IDE) + set(LIBCXX_CONFIGURE_IDE_DEFAULT ON) +endif() +option(LIBCXX_CONFIGURE_IDE "Configure libcxx for use within an IDE" + ${LIBCXX_CONFIGURE_IDE_DEFAULT}) + +#=============================================================================== +# Check option configurations +#=============================================================================== + +# Ensure LIBCXX_ENABLE_MONOTONIC_CLOCK is set to ON only when +# LIBCXX_ENABLE_THREADS is on. +if(LIBCXX_ENABLE_THREADS AND NOT LIBCXX_ENABLE_MONOTONIC_CLOCK) + message(FATAL_ERROR "LIBCXX_ENABLE_MONOTONIC_CLOCK can only be set to OFF" + " when LIBCXX_ENABLE_THREADS is also set to OFF.") +endif() + +# Ensure LLVM_USE_SANITIZER is not specified when LIBCXX_GENERATE_COVERAGE +# is ON. +if (LLVM_USE_SANITIZER AND LIBCXX_GENERATE_COVERAGE) + message(FATAL_ERROR "LLVM_USE_SANITIZER cannot be used with LIBCXX_GENERATE_COVERAGE") +endif() + +# Set LIBCXX_BUILD_32_BITS to (LIBCXX_BUILD_32_BITS OR LLVM_BUILD_32_BITS) +# and check that we can build with 32 bits if requested. +if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32) + if (LIBCXX_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM + message(STATUS "Building 32 bits executables and libraries.") + endif() +elseif(LIBCXX_BUILD_32_BITS) + message(FATAL_ERROR "LIBCXX_BUILD_32_BITS=ON is not supported on this platform.") +endif() + +# Check that this option is not enabled on Apple and emit a usage warning. +if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY) + if (APPLE) + message(FATAL_ERROR "LIBCXX_ENABLE_STATIC_ABI_LIBRARY is not supported on OS X") + else() + message(WARNING "LIBCXX_ENABLE_STATIC_ABI_LIBRARY is an experimental option") + endif() +endif() + +if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT) + if (APPLE) + message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT cannot be used on APPLE targets") + endif() + if (NOT PYTHONINTERP_FOUND) + message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT requires python but it was not found.") + endif() +endif() + +if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY AND LIBCXX_ENABLE_ABI_LINKER_SCRIPT) + message(FATAL_ERROR "Conflicting options given. + LIBCXX_ENABLE_STATIC_ABI_LIBRARY cannot be specified with + LIBCXX_ENABLE_ABI_LINKER_SCRIPT") +endif() + +if (LIBCXX_HAS_MUSL_LIBC AND NOT LIBCXX_INSTALL_SUPPORT_HEADERS) + message(FATAL_ERROR "LIBCXX_INSTALL_SUPPORT_HEADERS can not be turned off" + "when building for Musl with LIBCXX_HAS_MUSL_LIBC.") +endif() + +#=============================================================================== +# Configure System +#=============================================================================== + +set(LIBCXX_COMPILER ${CMAKE_CXX_COMPILER}) +set(LIBCXX_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}) +set(LIBCXX_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) +set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX}) + +set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR}) +set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR}) + +# Declare libc++ configuration variables. +# They are intended for use as follows: +# LIBCXX_CXX_FLAGS: General flags for both the compiler and linker. +# LIBCXX_COMPILE_FLAGS: Compile only flags. +# LIBCXX_LINK_FLAGS: Linker only flags. +set(LIBCXX_COMPILE_FLAGS "") +set(LIBCXX_LINK_FLAGS "") +set(LIBCXX_LIBRARIES "") + +# Configure compiler. +include(config-ix) + +# Configure coverage options. +if (LIBCXX_GENERATE_COVERAGE) + include(CodeCoverage) + set(CMAKE_BUILD_TYPE "COVERAGE" CACHE STRING "" FORCE) +endif() + +string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE) + +#=============================================================================== +# Setup Compiler Flags +#=============================================================================== + +include(HandleLibCXXABI) # Steup the ABI library flags + +# Include macros for adding and removing libc++ flags. +include(HandleLibcxxFlags) + +# Remove flags that may have snuck in. +remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG + -stdlib=libc++ -stdlib=libstdc++ -lc++abi -m32) + +# FIXME(EricWF): See the FIXME on LIBCXX_ENABLE_PEDANTIC. +# Remove the -pedantic flag and -Wno-pedantic and -pedantic-errors +# so they don't get transformed into -Wno and -errors respectivly. +remove_flags(-Wno-pedantic -pedantic-errors -pedantic) + +# Required flags ============================================================== +add_compile_flags_if_supported(-std=c++11) +if (NOT MSVC AND NOT LIBCXX_SUPPORTS_STD_EQ_CXX11_FLAG) + message(FATAL_ERROR "C++11 is required but the compiler does not support -std=c++11") +endif() + +# On all systems the system c++ standard library headers need to be excluded. +# MSVC only has -X, which disables all default includes; including the crt. +# Thus, we do nothing and hope we don't accidentally include any of the C++ +# headers +add_compile_flags_if_supported(-nostdinc++) + +# Target flags ================================================================ +add_flags_if(LIBCXX_BUILD_32_BITS -m32) +add_flags_if(LIBCXX_TARGET_TRIPLE "-target ${LIBCXX_TARGET_TRIPLE}") +add_flags_if(LIBCXX_SYSROOT "--sysroot ${LIBCXX_SYSROOT}") +add_flags_if(LIBCXX_GCC_TOOLCHAIN "-gcc-toolchain ${LIBCXX_GCC_TOOLCHAIN}") + +# Warning flags =============================================================== +add_definitions(-D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +add_compile_flags_if_supported( + -Wall -W -Wwrite-strings + -Wno-unused-parameter -Wno-long-long + -Werror=return-type) +if (LIBCXX_ENABLE_WERROR) + add_compile_flags_if_supported(-Werror) + add_compile_flags_if_supported(-WX) +else() + # TODO(EricWF) Remove this. We shouldn't be suppressing errors when -Werror is + # added elsewhere. + add_compile_flags_if_supported(-Wno-error) +endif() +if (LIBCXX_ENABLE_PEDANTIC) + add_compile_flags_if_supported(-pedantic) +endif() + +# Exception flags ============================================================= +if (LIBCXX_ENABLE_EXCEPTIONS) + # Catches C++ exceptions only and tells the compiler to assume that extern C + # functions never throw a C++ exception. + add_compile_flags_if_supported(-EHsc) +else() + add_definitions(-D_LIBCPP_NO_EXCEPTIONS) + add_compile_flags_if_supported(-EHs- -EHa-) + add_compile_flags_if_supported(-fno-exceptions) +endif() + +# RTTI flags ================================================================== +if (NOT LIBCXX_ENABLE_RTTI) + add_definitions(-D_LIBCPP_NO_RTTI) + add_compile_flags_if_supported(-GR-) + add_compile_flags_if_supported(-fno-rtti) +endif() + +# Assertion flags ============================================================= +define_if(LIBCXX_ENABLE_ASSERTIONS -UNDEBUG) +define_if_not(LIBCXX_ENABLE_ASSERTIONS -DNDEBUG) +if (LIBCXX_ENABLE_ASSERTIONS) + # MSVC doesn't like _DEBUG on release builds. See PR 4379. + define_if_not(MSVC -D_DEBUG) +endif() + +# Feature flags =============================================================== +define_if(MSVC -D_CRT_SECURE_NO_WARNINGS) + +# Sanitizer flags ============================================================= + +# Configure for sanitizers. If LIBCXX_BUILT_STANDALONE then we have to do +# the flag translation ourselves. Othewise LLVM's CMakeList.txt will handle it. +if (LIBCXX_BUILT_STANDALONE) + set(LLVM_USE_SANITIZER "" CACHE STRING + "Define the sanitizer used to build the library and tests") + # NOTE: LLVM_USE_SANITIZER checks for a UNIX like system instead of MSVC. + # But we don't have LLVM_ON_UNIX so checking for MSVC is the best we can do. + if (LLVM_USE_SANITIZER AND NOT MSVC) + add_flags_if_supported("-fno-omit-frame-pointer") + add_flags_if_supported("-gline-tables-only") + + if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND + NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO") + add_flags_if_supported("-gline-tables-only") + endif() + if (LLVM_USE_SANITIZER STREQUAL "Address") + add_flags("-fsanitize=address") + elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?") + add_flags(-fsanitize=memory) + if (LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins") + add_flags("-fsanitize-memory-track-origins") + endif() + elseif (LLVM_USE_SANITIZER STREQUAL "Undefined") + add_flags("-fsanitize=undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all") + elseif (LLVM_USE_SANITIZER STREQUAL "Thread") + add_flags(-fsanitize=thread) + else() + message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}") + endif() + elseif(LLVM_USE_SANITIZER AND MSVC) + message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.") + endif() +endif() + +# Configuration file flags ===================================================== +if (NOT LIBCXX_ABI_VERSION EQUAL "1") + config_define(${LIBCXX_ABI_VERSION} _LIBCPP_ABI_VERSION) +endif() +config_define_if(LIBCXX_ABI_UNSTABLE _LIBCPP_ABI_UNSTABLE) + +config_define_if_not(LIBCXX_ENABLE_GLOBAL_FILESYSTEM_NAMESPACE _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE) +config_define_if_not(LIBCXX_ENABLE_STDIN _LIBCPP_HAS_NO_STDIN) +config_define_if_not(LIBCXX_ENABLE_STDOUT _LIBCPP_HAS_NO_STDOUT) +config_define_if_not(LIBCXX_ENABLE_THREADS _LIBCPP_HAS_NO_THREADS) +config_define_if_not(LIBCXX_ENABLE_MONOTONIC_CLOCK _LIBCPP_HAS_NO_MONOTONIC_CLOCK) +config_define_if_not(LIBCXX_ENABLE_THREAD_UNSAFE_C_FUNCTIONS _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS) + +config_define_if(LIBCXX_HAS_MUSL_LIBC _LIBCPP_HAS_MUSL_LIBC) + +if (LIBCXX_NEEDS_SITE_CONFIG) + configure_file( + include/__config_site.in + ${LIBCXX_BINARY_DIR}/__config_site + @ONLY) + # Provide the config definitions by included the generated __config_site + # file at compile time. + add_compile_flags("-include ${LIBCXX_BINARY_DIR}/__config_site") +endif() + +#=============================================================================== +# Setup Source Code And Tests +#=============================================================================== +include_directories(include) +add_subdirectory(include) +add_subdirectory(lib) + +if (LIBCXX_INCLUDE_TESTS) + add_subdirectory(test) +endif() +if (LIBCXX_INCLUDE_DOCS) + add_subdirectory(docs) +endif() |