cmake_policy(PUSH)
cmake_policy(SET CMP0057 NEW)
function(get_system_libs return_var)
message(AUTHOR_WARNING "get_system_libs no longer needed")
set(${return_var} "" PARENT_SCOPE)
endfunction()
function(link_system_libs target)
message(AUTHOR_WARNING "link_system_libs no longer needed")
endfunction()
# is_llvm_target_library(
# library
# Name of the LLVM library to check
# return_var
# Output variable name
# ALL_TARGETS;INCLUDED_TARGETS;OMITTED_TARGETS
# ALL_TARGETS - default looks at the full list of known targets
# INCLUDED_TARGETS - looks only at targets being configured
# OMITTED_TARGETS - looks only at targets that are not being configured
# )
function(is_llvm_target_library library return_var)
cmake_parse_arguments(ARG "ALL_TARGETS;INCLUDED_TARGETS;OMITTED_TARGETS" "" "" ${ARGN})
# Sets variable `return_var' to ON if `library' corresponds to a
# LLVM supported target. To OFF if it doesn't.
set(${return_var} OFF PARENT_SCOPE)
string(TOUPPER "${library}" capitalized_lib)
if(ARG_INCLUDED_TARGETS)
string(TOUPPER "${LLVM_TARGETS_TO_BUILD}" targets)
elseif(ARG_OMITTED_TARGETS)
set(omitted_targets ${LLVM_ALL_TARGETS})
if (LLVM_TARGETS_TO_BUILD)
list(REMOVE_ITEM omitted_targets ${LLVM_TARGETS_TO_BUILD})
endif()
string(TOUPPER "${omitted_targets}" targets)
else()
string(TOUPPER "${LLVM_ALL_TARGETS}" targets)
endif()
foreach(t ${targets})
if( capitalized_lib STREQUAL t OR
capitalized_lib STREQUAL "${t}" OR
capitalized_lib STREQUAL "${t}DESC" OR
capitalized_lib STREQUAL "${t}CODEGEN" OR
capitalized_lib STREQUAL "${t}ASMPARSER" OR
capitalized_lib STREQUAL "${t}ASMPRINTER" OR
capitalized_lib STREQUAL "${t}DISASSEMBLER" OR
capitalized_lib STREQUAL "${t}INFO" OR
capitalized_lib STREQUAL "${t}UTILS" )
set(${return_var} ON PARENT_SCOPE)
break()
endif()
endforeach()
endfunction(is_llvm_target_library)
function(is_llvm_target_specifier library return_var)
is_llvm_target_library(${library} ${return_var} ${ARGN})
string(TOUPPER "${library}" capitalized_lib)
if(NOT ${return_var})
if( capitalized_lib STREQUAL "ALLTARGETSASMPARSERS" OR
capitalized_lib STREQUAL "ALLTARGETSDESCS" OR
capitalized_lib STREQUAL "ALLTARGETSDISASSEMBLERS" OR
capitalized_lib STREQUAL "ALLTARGETSINFOS" OR
capitalized_lib STREQUAL "NATIVE" OR
capitalized_lib STREQUAL "NATIVECODEGEN" )
set(${return_var} ON PARENT_SCOPE)
endif()
endif()
endfunction()
macro(llvm_config executable)
cmake_parse_arguments(ARG "USE_SHARED" "" "" ${ARGN})
set(link_components ${ARG_UNPARSED_ARGUMENTS})
if(ARG_USE_SHARED)
# If USE_SHARED is specified, then we link against libLLVM,
# but also against the component libraries below. This is
# done in case libLLVM does not contain all of the components
# the target requires.
#
# Strip LLVM_DYLIB_COMPONENTS out of link_components.
# To do this, we need special handling for "all", since that
# may imply linking to libraries that are not included in
# libLLVM.
if (DEFINED link_components AND DEFINED LLVM_DYLIB_COMPONENTS)
if("${LLVM_DYLIB_COMPONENTS}" STREQUAL "all")
set(link_components "")
else()
list(REMOVE_ITEM link_components ${LLVM_DYLIB_COMPONENTS})
endif()
endif()
target_link_libraries(${executable} PRIVATE LLVM)
endif()
explicit_llvm_config(${executable} ${link_components})
endmacro(llvm_config)
function(explicit_llvm_config executable)
set( link_components ${ARGN} )
llvm_map_components_to_libnames(LIBRARIES ${link_components})
get_target_property(t ${executable} TYPE)
if(t STREQUAL "STATIC_LIBRARY")
target_link_libraries(${executable} INTERFACE ${LIBRARIES})
elseif(t STREQUAL "EXECUTABLE" OR t STREQUAL "SHARED_LIBRARY" OR t STREQUAL "MODULE_LIBRARY")
target_link_libraries(${executable} PRIVATE ${LIBRARIES})
else()
# Use plain form for legacy user.
target_link_libraries(${executable} ${LIBRARIES})
endif()
endfunction(explicit_llvm_config)
# This is Deprecated
function(llvm_map_components_to_libraries OUT_VAR)
message(AUTHOR_WARNING "Using llvm_map_components_to_libraries() is deprecated. Use llvm_map_components_to_libnames() instead")
explicit_map_components_to_libraries(result ${ARGN})
set( ${OUT_VAR} ${result} ${sys_result} PARENT_SCOPE )
endfunction(llvm_map_components_to_libraries)
# Expand pseudo-components into real components.
# Does not cover 'native', 'backend', or 'engine' as these require special
# handling. Also does not cover 'all' as we only have a list of the libnames
# available and not a list of the components.
function(llvm_expand_pseudo_components out_components)
set( link_components ${ARGN} )
if(NOT LLVM_AVAILABLE_LIBS)
# Inside LLVM itself available libs are in a global property.
get_property(LLVM_AVAILABLE_LIBS GLOBAL PROPERTY LLVM_LIBS)
endif()
foreach(c ${link_components})
# add codegen, asmprinter, asmparser, disassembler
if("${c}" IN_LIST LLVM_TARGETS_TO_BUILD)
if(LLVM${c}CodeGen IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${c}CodeGen")
else()
if(LLVM${c} IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${c}")
else()
message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
endif()
endif()
foreach(subcomponent IN ITEMS AsmPrinter AsmParser Desc Disassembler Info Utils)
if(LLVM${c}${subcomponent} IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${c}${subcomponent}")
endif()
endforeach()
elseif("${c}" STREQUAL "nativecodegen" )
foreach(subcomponent IN ITEMS CodeGen Desc Info)
if(LLVM${LLVM_NATIVE_ARCH}${subcomponent} IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${LLVM_NATIVE_ARCH}${subcomponent}")
endif()
endforeach()
elseif("${c}" STREQUAL "AllTargetsCodeGens" )
# Link all the codegens from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}CodeGen)
list(APPEND expanded_components "${t}CodeGen")
endif()
endforeach(t)
elseif("${c}" STREQUAL "AllTargetsAsmParsers" )
# Link all the asm parsers from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if(LLVM${t}AsmParser IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${t}AsmParser")
endif()
endforeach(t)
elseif( "${c}" STREQUAL "AllTargetsDescs" )
# Link all the descs from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if(LLVM${t}Desc IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${t}Desc")
endif()
endforeach(t)
elseif("${c}" STREQUAL "AllTargetsDisassemblers" )
# Link all the disassemblers from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if(LLVM${t}Disassembler IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${t}Disassembler")
endif()
endforeach(t)
elseif("${c}" STREQUAL "AllTargetsInfos" )
# Link all the infos from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if(LLVM${t}Info IN_LIST LLVM_AVAILABLE_LIBS)
list(APPEND expanded_components "${t}Info")
endif()
endforeach(t)
elseif("${c}" STREQUAL "AllTargetsMCAs" )
# Link all the TargetMCAs from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}TargetMCA )
list(APPEND expanded_components "${t}TargetMCA")
endif()
endforeach(t)
else()
list(APPEND expanded_components "${c}")
endif()
endforeach()
set(${out_components} ${expanded_components} PARENT_SCOPE)
endfunction(llvm_expand_pseudo_components out_components)
# This is a variant intended for the final user:
# Map LINK_COMPONENTS to actual libnames.
function(llvm_map_components_to_libnames out_libs)
set( link_components ${ARGN} )
if(NOT LLVM_AVAILABLE_LIBS)
# Inside LLVM itself available libs are in a global property.
get_property(LLVM_AVAILABLE_LIBS GLOBAL PROPERTY LLVM_LIBS)
endif()
string(TOUPPER "${LLVM_AVAILABLE_LIBS}" capitalized_libs)
get_property(LLVM_TARGETS_CONFIGURED GLOBAL PROPERTY LLVM_TARGETS_CONFIGURED)
# Generally in our build system we avoid order-dependence. Unfortunately since
# not all targets create the same set of libraries we actually need to ensure
# that all build targets associated with a target are added before we can
# process target dependencies.
if(NOT LLVM_TARGETS_CONFIGURED)
foreach(c ${link_components})
is_llvm_target_specifier("${c}" iltl_result ALL_TARGETS)
if(iltl_result)
message(FATAL_ERROR "Specified target library before target registration is complete.")
endif()
endforeach()
endif()
# Expand some keywords:
if(engine IN_LIST link_components)
if(${LLVM_NATIVE_ARCH} IN_LIST LLVM_TARGETS_TO_BUILD AND
${LLVM_NATIVE_ARCH} IN_LIST LLVM_TARGETS_WITH_JIT)
list(APPEND link_components "jit")
list(APPEND link_components "native")
else()
list(APPEND link_components "interpreter")
endif()
endif()
if(native IN_LIST link_components AND "${LLVM_NATIVE_ARCH}" IN_LIST LLVM_TARGETS_TO_BUILD)
list(APPEND link_components ${LLVM_NATIVE_ARCH})
endif()
# Translate symbolic component names to real libraries:
llvm_expand_pseudo_components(link_components ${link_components})
foreach(c ${link_components})
get_property(c_rename GLOBAL PROPERTY LLVM_COMPONENT_NAME_${c})
if(c_rename)
set(c ${c_rename})
endif()
if("${c}" STREQUAL "native" )
# already processed
elseif("${c}" STREQUAL "backend" )
# same case as in `native'.
elseif("${c}" STREQUAL "engine" )
# already processed
elseif("${c}" STREQUAL "all" )
get_property(all_components GLOBAL PROPERTY LLVM_COMPONENT_LIBS)
list(APPEND expanded_components ${all_components})
else()
# Canonize the component name:
string(TOUPPER "${c}" capitalized)
list(FIND capitalized_libs LLVM${capitalized} lib_idx)
if( lib_idx LESS 0 )
# The component is unknown. Maybe is an omitted target?
is_llvm_target_library("${c}" iltl_result OMITTED_TARGETS)
if(iltl_result)
# A missing library to a directly referenced omitted target would be bad.
message(FATAL_ERROR "Library '${c}' is a direct reference to a target library for an omitted target.")
else()
# If it is not an omitted target we should assume it is a component
# that hasn't yet been processed by CMake. Missing components will
# cause errors later in the configuration, so we can safely assume
# that this is valid here.
list(APPEND expanded_components LLVM${c})
endif()
else( lib_idx LESS 0 )
list(GET LLVM_AVAILABLE_LIBS ${lib_idx} canonical_lib)
list(APPEND expanded_components ${canonical_lib})
endif( lib_idx LESS 0 )
endif("${c}" STREQUAL "native" )
endforeach(c)
set(${out_libs} ${expanded_components} PARENT_SCOPE)
endfunction()
# Perform a post-order traversal of the dependency graph.
# This duplicates the algorithm used by llvm-config, originally
# in tools/llvm-config/llvm-config.cpp, function ComputeLibsForComponents.
function(expand_topologically name required_libs visited_libs)
if(NOT ${name} IN_LIST visited_libs)
list(APPEND visited_libs ${name})
set(visited_libs ${visited_libs} PARENT_SCOPE)
#
get_property(libname GLOBAL PROPERTY LLVM_COMPONENT_NAME_${name})
if(libname)
set(cname LLVM${libname})
elseif(TARGET ${name})
set(cname ${name})
elseif(TARGET LLVM${name})
set(cname LLVM${name})
else()
message(FATAL_ERROR "unknown component ${name}")
endif()
get_property(lib_deps TARGET ${cname} PROPERTY LLVM_LINK_COMPONENTS)
foreach( lib_dep ${lib_deps} )
expand_topologically(${lib_dep} "${required_libs}" "${visited_libs}")
set(required_libs ${required_libs} PARENT_SCOPE)
set(visited_libs ${visited_libs} PARENT_SCOPE)
endforeach()
list(APPEND required_libs ${cname})
set(required_libs ${required_libs} PARENT_SCOPE)
endif()
endfunction()
# Expand dependencies while topologically sorting the list of libraries:
function(llvm_expand_dependencies out_libs)
set(expanded_components ${ARGN})
set(required_libs)
set(visited_libs)
foreach( lib ${expanded_components} )
expand_topologically(${lib} "${required_libs}" "${visited_libs}")
endforeach()
if(required_libs)
list(REVERSE required_libs)
endif()
set(${out_libs} ${required_libs} PARENT_SCOPE)
endfunction()
function(explicit_map_components_to_libraries out_libs)
llvm_map_components_to_libnames(link_libs ${ARGN})
llvm_expand_dependencies(expanded_components ${link_libs})
# Return just the libraries included in this build:
set(result)
foreach(c ${expanded_components})
if( TARGET ${c} )
set(result ${result} ${c})
endif()
endforeach(c)
set(${out_libs} ${result} PARENT_SCOPE)
endfunction(explicit_map_components_to_libraries)
cmake_policy(POP)
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