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300da4f9b0
darling-libcxx/CMakeLists.txt
Eric Fiselier 300da4f9b0 [libcxx] Fix installation of ABI headers. Fixes PR20936 
Summary:
I changed the build so that each ABI header gets its own install rule. This gives us the flexibility to install different headers in different directories. 
This also fixes the problem where libstdc++ bits/<header>'s were not being installed under a bits directory.

Test Plan: I tested this patch on linux against libstdc++ and libcxxabi.

Reviewers: danalbert, mclow.lists, jroelofs

Reviewed By: jroelofs

Subscribers: jhunold, cfe-commits

Differential Revision: http://reviews.llvm.org/D5454

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@218309 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-23 14:42:28 +00:00

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CMake
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# See www/CMake.html for instructions on how to build libcxx with CMake.
#===============================================================================
# Setup Project
#===============================================================================
project(libcxx CXX C)
cmake_minimum_required(VERSION 2.8)
set(PACKAGE_NAME libcxx)
set(PACKAGE_VERSION trunk-svn)
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
# Add path for custom modules
set(CMAKE_MODULE_PATH
"${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/${PROJECT_NAME} [options]' there."
)
if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
set(LIBCXX_BUILT_STANDALONE 1)
endif()
#===============================================================================
# Setup CMake Options
#===============================================================================
# Define options.
option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
option(LIBCXX_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
option(LIBCXX_ENABLE_CXX1Y "Enable -std=c++1y and use of c++1y language features if the compiler supports it." OFF)
option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
option(LIBCXX_INSTALL_SUPPORT_HEADERS "Install libc++ support headers." ON)
if (LIBCXX_BUILT_STANDALONE)
set(LLVM_USE_SANITIZER "" CACHE STRING
"Define the sanitizer used to build the library and tests")
endif()
set(CXXABIS none libcxxabi libcxxrt libstdc++ libsupc++)
if (NOT LIBCXX_CXX_ABI)
if (NOT DEFINED LIBCXX_BUILT_STANDALONE AND
IS_DIRECTORY "${CMAKE_SOURCE_DIR}/projects/libcxxabi")
set(LIBCXX_CXX_ABI_LIBNAME "libcxxabi")
set(LIBCXX_LIBCXXABI_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 ()
set(LIBCXX_CXX_ABI "${LIBCXX_CXX_ABI}" CACHE STRING
"Specify C++ ABI library to use." FORCE)
set_property(CACHE LIBCXX_CXX_ABI PROPERTY STRINGS ;${CXXABIS})
#===============================================================================
# Configure System
#===============================================================================
# Get triples.
include(GetTriple)
get_host_triple(LIBCXX_HOST_TRIPLE
LIBCXX_HOST_ARCH
LIBCXX_HOST_VENDOR
LIBCXX_HOST_OS
)
set(LIBCXX_HOST_TRIPLE ${LIBCXX_HOST_TRIPLE} CACHE STRING "Host triple.")
get_target_triple(LIBCXX_TARGET_TRIPLE
LIBCXX_TARGET_ARCH
LIBCXX_TARGET_VENDOR
LIBCXX_TARGET_OS
)
set(LIBCXX_TARGET_TRIPLE ${LIBCXX_TARGET_TRIPLE} CACHE STRING "Target triple.")
#===============================================================================
# Add an ABI library if appropriate
#===============================================================================
#
# _setup_abi: Set up the build to use an ABI library
#
# Parameters:
# abidefines: A list of defines needed to compile libc++ with the ABI library
# abilibs : A list of libraries to link against
# abifiles : A list of files (which may be relative paths) to copy into the
# libc++ build tree for the build. These files will also be
# installed alongside the libc++ headers.
# abidirs : A list of relative paths to create under an include directory
# in the libc++ build directory.
#
macro(setup_abi_lib abipathvar abidefines abilibs abifiles abidirs)
list(APPEND LIBCXX_CXX_FEATURE_FLAGS ${abidefines})
set(${abipathvar} "${${abipathvar}}"
CACHE PATH
"Paths to C++ ABI header directories separated by ';'." FORCE
)
set(LIBCXX_CXX_ABI_LIBRARIES ${abilibs})
set(LIBCXX_ABILIB_FILES ${abifiles})
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/include")
foreach(_d ${abidirs})
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/include/${_d}")
endforeach()
foreach(fpath ${LIBCXX_ABILIB_FILES})
set(found FALSE)
foreach(incpath ${${abipathvar}})
if (EXISTS "${incpath}/${fpath}")
set(found TRUE)
get_filename_component(dstdir ${fpath} PATH)
get_filename_component(ifile ${fpath} NAME)
file(COPY "${incpath}/${fpath}"
DESTINATION "${CMAKE_BINARY_DIR}/include/${dstdir}"
)
install(FILES "${CMAKE_BINARY_DIR}/include/${fpath}"
DESTINATION include/c++/v1/${dstdir}
PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
)
list(APPEND abilib_headers "${CMAKE_BINARY_DIR}/include/${fpath}")
endif()
endforeach()
if (NOT found)
message(FATAL_ERROR "Failed to find ${fpath}")
endif()
endforeach()
add_custom_target(LIBCXX_CXX_ABI_DEPS DEPENDS ${abilib_headers})
include_directories("${CMAKE_BINARY_DIR}/include")
endmacro()
if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++" OR
"${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libsupc++")
set(_LIBSUPCXX_INCLUDE_FILES
cxxabi.h bits/c++config.h bits/os_defines.h bits/cpu_defines.h
bits/cxxabi_tweaks.h bits/cxxabi_forced.h
)
if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++")
set(_LIBSUPCXX_DEFINES "-DLIBSTDCXX")
set(_LIBSUPCXX_LIBNAME stdc++)
else()
set(_LIBSUPCXX_DEFINES "")
set(_LIBSUPCXX_LIBNAME supc++)
endif()
setup_abi_lib("LIBCXX_LIBSUPCXX_INCLUDE_PATHS"
"-D__GLIBCXX__ ${_LIBSUPCXX_DEFINES}"
"${_LIBSUPCXX_LIBNAME}" "${_LIBSUPCXX_INCLUDE_FILES}" "bits"
)
elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi")
if (LIBCXX_CXX_ABI_INTREE)
# Link against just-built "cxxabi" target.
set(CXXABI_LIBNAME cxxabi)
else()
# Assume c++abi is installed in the system, rely on -lc++abi link flag.
set(CXXABI_LIBNAME "c++abi")
endif()
setup_abi_lib("LIBCXX_LIBCXXABI_INCLUDE_PATHS" ""
${CXXABI_LIBNAME} "cxxabi.h" ""
)
elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxrt")
setup_abi_lib("LIBCXX_LIBCXXRT_INCLUDE_PATHS" "-DLIBCXXRT"
"cxxrt" "cxxabi.h;unwind.h;unwind-arm.h;unwind-itanium.h" ""
)
elseif (NOT "${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "none")
message(FATAL_ERROR
"Currently libstdc++, libsupc++, libcxxabi, libcxxrt and none are "
"supported for c++ abi."
)
endif ()
# Configure compiler.
include(config-ix)
#===============================================================================
# Setup Compiler Flags
#===============================================================================
# Get required flags.
# On all systems the system c++ standard library headers need to be excluded.
if (MSVC)
# MSVC only has -X, which disables all default includes; including the crt.
# Thus, we do nothing and hope we don't accidentally include any of the C++
# headers.
else()
if (LIBCXX_HAS_NOSTDINCXX_FLAG)
list(APPEND LIBCXX_CXX_REQUIRED_FLAGS -nostdinc++)
string(REPLACE "-stdlib=libc++" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endif()
# If c++1y has been enabled then attempt to use it. Fail if it is no supported
# by the compiler. Otherwise choose c++11 and ensure the compiler supports it.
if (LIBCXX_ENABLE_CXX1Y)
if (LIBCXX_HAS_STDCXX1Y_FLAG)
set(LIBCXX_STD_VERSION c++1y)
else()
message(FATAL_ERROR "c++1y was enabled but the compiler does not support it.")
endif()
else()
if (LIBCXX_HAS_STDCXX11_FLAG)
set(LIBCXX_STD_VERSION c++11)
else()
message(FATAL_ERROR "c++11 is required by libc++ but is not supported by the compiler")
endif()
endif()
# LIBCXX_STD_VERSION should always be set at this point.
list(APPEND LIBCXX_CXX_REQUIRED_FLAGS "-std=${LIBCXX_STD_VERSION}")
endif()
macro(append_if list condition var)
if (${condition})
list(APPEND ${list} ${var})
endif()
endmacro()
# Get warning flags
if (NOT MSVC)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WALL_FLAG -Wall)
list(APPEND LIBCXX_CXX_REQUIRED_FLAGS -Werror=return-type)
endif()
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_W_FLAG -W)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_UNUSED_PARAMETER_FLAG -Wno-unused-parameter)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_LONG_LONG_FLAG -Wno-long-long)
if (LIBCXX_ENABLE_WERROR)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WERROR_FLAG -Werror)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WX_FLAG -WX)
else()
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_ERROR_FLAG -Wno-error)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_NO_WX_FLAG -WX-)
endif()
if (LIBCXX_ENABLE_PEDANTIC)
append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_PEDANTIC_FLAG -pedantic)
endif()
# Get feature flags.
# Exceptions
if (LIBCXX_ENABLE_EXCEPTIONS)
# Catches C++ exceptions only and tells the compiler to assume that extern C
# functions never throw a C++ exception.
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_EHSC_FLAG -EHsc)
else()
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_LIBCPP_NO_EXCEPTIONS)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_EHS_FLAG -EHs-)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_EHA_FLAG -EHa-)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions)
endif()
# RTTI
if (NOT LIBCXX_ENABLE_RTTI)
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_LIBCPP_NO_RTTI)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_GR_FLAG -GR-)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_FNO_RTTI_FLAG -fno-rtti)
endif()
# Assert
string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
if (LIBCXX_ENABLE_ASSERTIONS)
# MSVC doesn't like _DEBUG on release builds. See PR 4379.
if (NOT MSVC)
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_DEBUG)
endif()
# On Release builds cmake automatically defines NDEBUG, so we
# explicitly undefine it:
if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -UNDEBUG)
endif()
else()
if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -DNDEBUG)
endif()
endif()
# Static library
if (NOT LIBCXX_ENABLE_SHARED)
list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_LIBCPP_BUILD_STATIC)
endif()
# This is the _ONLY_ place where add_definitions is called.
if (MSVC)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
endif()
# 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)
# 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)
append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_OMIT_FRAME_POINTER_FLAG
"-fno-omit-frame-pointer")
if (LLVM_USE_SANITIZER STREQUAL "Address")
list(APPEND LIBCXX_CXX_FEATURE_FLAGS "-fsanitize=address")
elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?")
list(APPEND LIBCXX_CXX_FEATURE_FLAGS "-fsanitize=memory")
if (LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
list(APPEND LIBCXX_CXX_FEATURE_FLAGS "-fsanitize-memory-track-origins")
endif()
else()
message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
endif()
elseif(MSVC)
message(WARNING "LLVM_USE_SANITIZER is not supported with MSVC")
endif()
endif()
string(REPLACE ";" " " LIBCXX_CXX_REQUIRED_FLAGS "${LIBCXX_CXX_REQUIRED_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXX_CXX_REQUIRED_FLAGS}")
string(REPLACE ";" " " LIBCXX_CXX_WARNING_FLAGS "${LIBCXX_CXX_WARNING_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXX_CXX_WARNING_FLAGS}")
string(REPLACE ";" " " LIBCXX_CXX_FEATURE_FLAGS "${LIBCXX_CXX_FEATURE_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXX_CXX_FEATURE_FLAGS}")
#===============================================================================
# Setup Source Code
#===============================================================================
include_directories(include)
add_subdirectory(include)
# Add source code. This also contains all of the logic for deciding linker flags
# soname, etc...
add_subdirectory(lib)
#===============================================================================
# Setup Tests
#===============================================================================
add_subdirectory(test)
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