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# If we are not building as a part of LLVM, build lld as a standalone project,
# using LLVM as an external library.
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
project(lld)
cmake_minimum_required(VERSION 2.8)
set(LLD_PATH_TO_LLVM_SOURCE "" CACHE PATH
"Path to LLVM source code. Not necessary if using an installed LLVM.")
set(LLD_PATH_TO_LLVM_BUILD "" CACHE PATH
"Path to the directory where LLVM was built or installed.")
if (LLD_PATH_TO_LLVM_SOURCE)
if (NOT EXISTS "${LLD_PATH_TO_LLVM_SOURCE}/cmake/config-ix.cmake")
message(FATAL_ERROR "Please set LLD_PATH_TO_LLVM_SOURCE to the root "
"directory of LLVM source code.")
else()
get_filename_component(LLVM_MAIN_SRC_DIR ${LLD_PATH_TO_LLVM_SOURCE}
ABSOLUTE)
list(APPEND CMAKE_MODULE_PATH "${LLVM_MAIN_SRC_DIR}/cmake/modules")
endif()
endif()
list(APPEND CMAKE_MODULE_PATH "${LLD_PATH_TO_LLVM_BUILD}/share/llvm/cmake")
get_filename_component(PATH_TO_LLVM_BUILD ${LLD_PATH_TO_LLVM_BUILD}
ABSOLUTE)
include(AddLLVM)
include("${LLD_PATH_TO_LLVM_BUILD}/share/llvm/cmake/LLVMConfig.cmake")
include(HandleLLVMOptions)
set(PACKAGE_VERSION "${LLVM_PACKAGE_VERSION}")
set(LLVM_MAIN_INCLUDE_DIR "${LLVM_MAIN_SRC_DIR}/include")
set(LLVM_BINARY_DIR ${CMAKE_BINARY_DIR})
set(CMAKE_INCLUDE_CURRENT_DIR ON)
include_directories("${PATH_TO_LLVM_BUILD}/include"
"${LLVM_MAIN_INCLUDE_DIR}")
link_directories("${PATH_TO_LLVM_BUILD}/lib")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(LLD_BUILT_STANDALONE 1)
endif()
set(LLD_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(LLD_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
if (CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
message(FATAL_ERROR "In-source builds are not allowed. CMake would overwrite "
"the makefiles distributed with LLVM. Please create a directory and run cmake "
"from there, passing the path to this source directory as the last argument. "
"This process created the file `CMakeCache.txt' and the directory "
"`CMakeFiles'. Please delete them.")
endif()
#
# lld now requires C++11 to build
#
# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
if (NOT MSVC)
include(CheckCXXCompilerFlag)
check_cxx_compiler_flag("-std=c++0x" SUPPORTS_CXX11_FLAG)
if( SUPPORTS_CXX11_FLAG )
message(STATUS "Building with -std=c++0x")
set(CMAKE_CXX_FLAGS "-std=c++0x ${CMAKE_CXX_FLAGS}")
else( SUPPORTS_CXX11_FLAG )
message(WARNING "-std=c++0x not supported.")
endif()
check_cxx_compiler_flag("-stdlib=libc++" SUPPORTS_LIBCXX_FLAG)
if( SUPPORTS_LIBCXX_FLAG )
message(STATUS "Building with -stdlib=libc++")
set(CMAKE_CXX_FLAGS "-stdlib=libc++ ${CMAKE_CXX_FLAGS}")
else( SUPPORTS_LIBCXX_FLAG )
message(WARNING "-stdlib=libc++ not supported.")
endif()
endif()
macro(add_lld_library name)
llvm_process_sources(srcs ${ARGN})
if (MSVC_IDE OR XCODE)
string(REGEX MATCHALL "/[^/]+" split_path ${CMAKE_CURRENT_SOURCE_DIR})
list(GET split_path -1 dir)
file(GLOB_RECURSE headers
../../include/lld${dir}/*.h)
set(srcs ${srcs} ${headers})
endif()
if (MODULE)
set(libkind MODULE)
elseif (SHARED_LIBRARY)
set(libkind SHARED)
else()
set(libkind)
endif()
add_library(${name} ${libkind} ${srcs})
if (LLVM_COMMON_DEPENDS)
add_dependencies(${name} ${LLVM_COMMON_DEPENDS})
endif()
target_link_libraries(${name} ${LLVM_USED_LIBS})
llvm_config(${name} ${LLVM_LINK_COMPONENTS})
target_link_libraries(${name} ${LLVM_COMMON_LIBS})
link_system_libs(${name})
install(TARGETS ${name}
LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
set_target_properties(${name} PROPERTIES FOLDER "lld libraries")
endmacro(add_lld_library)
macro(add_lld_executable name)
add_llvm_executable(${name} ${ARGN})
set_target_properties(${name} PROPERTIES FOLDER "lld executables")
endmacro(add_lld_executable)
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/include
${CMAKE_CURRENT_SOURCE_DIR}/include
)
install(DIRECTORY include/
DESTINATION include
FILES_MATCHING
PATTERN "*.h"
PATTERN ".svn" EXCLUDE
)
add_subdirectory(lib)
add_subdirectory(tools)
add_subdirectory(test)
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