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include(CMakePushCheckState)
include(CheckSymbolExists)
# Because compiler-rt spends a lot of time setting up custom compile flags,
# define a handy helper function for it. The compile flags setting in CMake
# has serious issues that make its syntax challenging at best.
function(set_target_compile_flags target)
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
endfunction()
function(set_target_link_flags target)
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
endfunction()
# Set the variable var_PYBOOL to True if var holds a true-ish string,
# otherwise set it to False.
macro(pythonize_bool var)
if (${var})
set(${var}_PYBOOL True)
else()
set(${var}_PYBOOL False)
endif()
endmacro()
# Appends value to all lists in ARGN, if the condition is true.
macro(append_list_if condition value)
if(${condition})
foreach(list ${ARGN})
list(APPEND ${list} ${value})
endforeach()
endif()
endmacro()
# Appends value to all strings in ARGN, if the condition is true.
macro(append_string_if condition value)
if(${condition})
foreach(str ${ARGN})
set(${str} "${${str}} ${value}")
endforeach()
endif()
endmacro()
macro(append_rtti_flag polarity list)
if(${polarity})
append_list_if(COMPILER_RT_HAS_FRTTI_FLAG -frtti ${list})
append_list_if(COMPILER_RT_HAS_GR_FLAG /GR ${list})
else()
append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
endif()
endmacro()
macro(append_have_file_definition filename varname list)
check_include_file("${filename}" "${varname}")
if (NOT ${varname})
set("${varname}" 0)
endif()
list(APPEND ${list} "${varname}=${${varname}}")
endmacro()
macro(list_intersect output input1 input2)
set(${output})
foreach(it ${${input1}})
list(FIND ${input2} ${it} index)
if( NOT (index EQUAL -1))
list(APPEND ${output} ${it})
endif()
endforeach()
endmacro()
function(list_replace input_list old new)
set(replaced_list)
foreach(item ${${input_list}})
if(${item} STREQUAL ${old})
list(APPEND replaced_list ${new})
else()
list(APPEND replaced_list ${item})
endif()
endforeach()
set(${input_list} "${replaced_list}" PARENT_SCOPE)
endfunction()
# Takes ${ARGN} and puts only supported architectures in @out_var list.
function(filter_available_targets out_var)
set(archs ${${out_var}})
foreach(arch ${ARGN})
list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX)
if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch})
list(APPEND archs ${arch})
endif()
endforeach()
set(${out_var} ${archs} PARENT_SCOPE)
endfunction()
# Add $arch as supported with no additional flags.
macro(add_default_target_arch arch)
set(TARGET_${arch}_CFLAGS "")
set(CAN_TARGET_${arch} 1)
list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
endmacro()
function(check_compile_definition def argstring out_var)
if("${def}" STREQUAL "")
set(${out_var} TRUE PARENT_SCOPE)
return()
endif()
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}")
check_symbol_exists(${def} "" ${out_var})
cmake_pop_check_state()
endfunction()
# test_target_arch(<arch> <def> <target flags...>)
# Checks if architecture is supported: runs host compiler with provided
# flags to verify that:
# 1) <def> is defined (if non-empty)
# 2) simple file can be successfully built.
# If successful, saves target flags for this architecture.
macro(test_target_arch arch def)
set(TARGET_${arch}_CFLAGS ${ARGN})
set(TARGET_${arch}_LINK_FLAGS ${ARGN})
set(argstring "")
foreach(arg ${ARGN})
set(argstring "${argstring} ${arg}")
endforeach()
check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF)
if(NOT DEFINED CAN_TARGET_${arch})
if(NOT HAS_${arch}_DEF)
set(CAN_TARGET_${arch} FALSE)
elseif(TEST_COMPILE_ONLY)
try_compile_only(CAN_TARGET_${arch} ${TARGET_${arch}_CFLAGS})
else()
set(FLAG_NO_EXCEPTIONS "")
if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG)
set(FLAG_NO_EXCEPTIONS " -fno-exceptions ")
endif()
set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS})
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${argstring}")
try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS} ${FLAG_NO_EXCEPTIONS}"
OUTPUT_VARIABLE TARGET_${arch}_OUTPUT)
set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS})
endif()
endif()
if(${CAN_TARGET_${arch}})
list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" STREQUAL "${arch}" AND
COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE)
# Bail out if we cannot target the architecture we plan to test.
message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}")
endif()
endmacro()
macro(detect_target_arch)
check_symbol_exists(__arm__ "" __ARM)
check_symbol_exists(__aarch64__ "" __AARCH64)
check_symbol_exists(__x86_64__ "" __X86_64)
check_symbol_exists(__i386__ "" __I386)
check_symbol_exists(__mips__ "" __MIPS)
check_symbol_exists(__mips64__ "" __MIPS64)
check_symbol_exists(__powerpc64__ "" __PPC64)
check_symbol_exists(__powerpc64le__ "" __PPC64LE)
check_symbol_exists(__s390x__ "" __S390X)
check_symbol_exists(__wasm32__ "" __WEBASSEMBLY32)
check_symbol_exists(__wasm64__ "" __WEBASSEMBLY64)
if(__ARM)
add_default_target_arch(arm)
elseif(__AARCH64)
add_default_target_arch(aarch64)
elseif(__X86_64)
add_default_target_arch(x86_64)
elseif(__I386)
add_default_target_arch(i386)
elseif(__MIPS64) # must be checked before __MIPS
add_default_target_arch(mips64)
elseif(__MIPS)
add_default_target_arch(mips)
elseif(__PPC64)
add_default_target_arch(powerpc64)
elseif(__PPC64LE)
add_default_target_arch(powerpc64le)
elseif(__S390X)
add_default_target_arch(s390x)
elseif(__WEBASSEMBLY32)
add_default_target_arch(wasm32)
elseif(__WEBASSEMBLY64)
add_default_target_arch(wasm64)
endif()
endmacro()
macro(load_llvm_config)
if (NOT LLVM_CONFIG_PATH)
find_program(LLVM_CONFIG_PATH "llvm-config"
DOC "Path to llvm-config binary")
if (NOT LLVM_CONFIG_PATH)
message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH")
endif()
endif()
execute_process(
COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root"
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT)
if (HAD_ERROR)
message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
endif()
string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
list(GET CONFIG_OUTPUT 0 BINARY_DIR)
list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR)
set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree")
set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
# Make use of LLVM CMake modules.
# --cmakedir is supported since llvm r291218 (4.0 release)
execute_process(
COMMAND ${LLVM_CONFIG_PATH} --cmakedir
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE CONFIG_OUTPUT)
if(NOT HAD_ERROR)
string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG)
file(TO_CMAKE_PATH ${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG} LLVM_CMAKE_PATH)
else()
file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE)
set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
endif()
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
# Get some LLVM variables from LLVMConfig.
include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
set(LLVM_LIBRARY_OUTPUT_INTDIR
${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
endmacro()
macro(construct_compiler_rt_default_triple)
if(COMPILER_RT_DEFAULT_TARGET_ONLY)
if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE)
message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only")
endif()
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET})
else()
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING
"Default triple for which compiler-rt runtimes will be built.")
endif()
if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE)
# Backwards compatibility: this variable used to be called
# COMPILER_RT_TEST_TARGET_TRIPLE.
set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE})
endif()
string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
list(GET TARGET_TRIPLE_LIST 1 COMPILER_RT_DEFAULT_TARGET_OS)
list(LENGTH TARGET_TRIPLE_LIST TARGET_TRIPLE_LIST_LENGTH)
if(TARGET_TRIPLE_LIST_LENGTH GREATER 2)
list(GET TARGET_TRIPLE_LIST 2 COMPILER_RT_DEFAULT_TARGET_ABI)
endif()
# Determine if test target triple is specified explicitly, and doesn't match the
# default.
if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE)
set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE)
else()
set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE)
endif()
endmacro()
# Filter out generic versions of routines that are re-implemented in
# architecture specific manner. This prevents multiple definitions of the
# same symbols, making the symbol selection non-deterministic.
function(filter_builtin_sources output_var exclude_or_include excluded_list)
if(exclude_or_include STREQUAL "EXCLUDE")
set(filter_action GREATER)
set(filter_value -1)
elseif(exclude_or_include STREQUAL "INCLUDE")
set(filter_action LESS)
set(filter_value 0)
else()
message(FATAL_ERROR "filter_builtin_sources called without EXCLUDE|INCLUDE")
endif()
set(intermediate ${ARGN})
foreach (_file ${intermediate})
get_filename_component(_name_we ${_file} NAME_WE)
list(FIND ${excluded_list} ${_name_we} _found)
if(_found ${filter_action} ${filter_value})
list(REMOVE_ITEM intermediate ${_file})
elseif(${_file} MATCHES ".*/.*\\.S" OR ${_file} MATCHES ".*/.*\\.c")
get_filename_component(_name ${_file} NAME)
string(REPLACE ".S" ".c" _cname "${_name}")
list(REMOVE_ITEM intermediate ${_cname})
endif ()
endforeach ()
set(${output_var} ${intermediate} PARENT_SCOPE)
endfunction()
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