llvm-6502/cmake/modules/LLVM-Config.cmake
Pete Cooper e6308656a6 Add targets to cmake for specific target components.
This adds the following targets to cmake.  These can be used to build and link only specific parts of a backend, instead of having to link the whole backend.

- AllTargetsAsmPrinters, AllTargetsAsmParsers, AllTargetsDescs, AllTargetsDisassemblers, AllTargetsInfos

A typical use for these is instead of linking ${LLVM_TARGETS_TO_BUILD}.  This commit changes llvm-mc to show how to use the new targets.

Reviewed by Chris Bieneman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235324 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-20 18:22:05 +00:00

237 lines
8.6 KiB
CMake

function(get_system_libs return_var)
message(AUTHOR_WARNING "get_system_libs no longer needed")
set(${return_var} "" PARENT_SCOPE)
endfunction()
function(link_system_libs target)
message(AUTHOR_WARNING "link_system_libs no longer needed")
endfunction()
function(is_llvm_target_library library return_var)
# Sets variable `return_var' to ON if `library' corresponds to a
# LLVM supported target. To OFF if it doesn't.
set(${return_var} OFF PARENT_SCOPE)
string(TOUPPER "${library}" capitalized_lib)
string(TOUPPER "${LLVM_ALL_TARGETS}" targets)
foreach(t ${targets})
if( capitalized_lib STREQUAL t OR
capitalized_lib STREQUAL "LLVM${t}" OR
capitalized_lib STREQUAL "LLVM${t}CODEGEN" OR
capitalized_lib STREQUAL "LLVM${t}ASMPARSER" OR
capitalized_lib STREQUAL "LLVM${t}ASMPRINTER" OR
capitalized_lib STREQUAL "LLVM${t}DISASSEMBLER" OR
capitalized_lib STREQUAL "LLVM${t}INFO" )
set(${return_var} ON PARENT_SCOPE)
break()
endif()
endforeach()
endfunction(is_llvm_target_library)
macro(llvm_config executable)
explicit_llvm_config(${executable} ${ARGN})
endmacro(llvm_config)
function(explicit_llvm_config executable)
set( link_components ${ARGN} )
llvm_map_components_to_libnames(LIBRARIES ${link_components})
get_target_property(t ${executable} TYPE)
if("x${t}" STREQUAL "xSTATIC_LIBRARY")
target_link_libraries(${executable} INTERFACE ${LIBRARIES})
elseif("x${t}" STREQUAL "xSHARED_LIBRARY" OR "x${t}" STREQUAL "xMODULE_LIBRARY")
target_link_libraries(${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)
# 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)
# Expand some keywords:
list(FIND LLVM_TARGETS_TO_BUILD "${LLVM_NATIVE_ARCH}" have_native_backend)
list(FIND link_components "engine" engine_required)
if( NOT engine_required EQUAL -1 )
list(FIND LLVM_TARGETS_WITH_JIT "${LLVM_NATIVE_ARCH}" have_jit)
if( NOT have_native_backend EQUAL -1 AND NOT have_jit EQUAL -1 )
list(APPEND link_components "jit")
list(APPEND link_components "native")
else()
list(APPEND link_components "interpreter")
endif()
endif()
list(FIND link_components "native" native_required)
if( NOT native_required EQUAL -1 )
if( NOT have_native_backend EQUAL -1 )
list(APPEND link_components ${LLVM_NATIVE_ARCH})
endif()
endif()
# Translate symbolic component names to real libraries:
foreach(c ${link_components})
# add codegen, asmprinter, asmparser, disassembler
list(FIND LLVM_TARGETS_TO_BUILD ${c} idx)
if( NOT idx LESS 0 )
if( TARGET LLVM${c}CodeGen )
list(APPEND expanded_components "LLVM${c}CodeGen")
else()
if( TARGET LLVM${c} )
list(APPEND expanded_components "LLVM${c}")
else()
message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
endif()
endif()
if( TARGET LLVM${c}AsmPrinter )
list(APPEND expanded_components "LLVM${c}AsmPrinter")
endif()
if( TARGET LLVM${c}AsmParser )
list(APPEND expanded_components "LLVM${c}AsmParser")
endif()
if( TARGET LLVM${c}Desc )
list(APPEND expanded_components "LLVM${c}Desc")
endif()
if( TARGET LLVM${c}Info )
list(APPEND expanded_components "LLVM${c}Info")
endif()
if( TARGET LLVM${c}Disassembler )
list(APPEND expanded_components "LLVM${c}Disassembler")
endif()
elseif( c STREQUAL "native" )
# already processed
elseif( c STREQUAL "nativecodegen" )
list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}CodeGen")
if( TARGET LLVM${LLVM_NATIVE_ARCH}Desc )
list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}Desc")
endif()
if( TARGET LLVM${LLVM_NATIVE_ARCH}Info )
list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}Info")
endif()
elseif( c STREQUAL "backend" )
# same case as in `native'.
elseif( c STREQUAL "engine" )
# already processed
elseif( c STREQUAL "all" )
list(APPEND expanded_components ${LLVM_AVAILABLE_LIBS})
elseif( c STREQUAL "AllTargetsAsmPrinters" )
# Link all the asm printers from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}AsmPrinter )
list(APPEND expanded_components "LLVM${t}AsmPrinter")
endif()
endforeach(t)
elseif( c STREQUAL "AllTargetsAsmParsers" )
# Link all the asm parsers from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}AsmParser )
list(APPEND expanded_components "LLVM${t}AsmParser")
endif()
endforeach(t)
elseif( c STREQUAL "AllTargetsDescs" )
# Link all the descs from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}Desc )
list(APPEND expanded_components "LLVM${t}Desc")
endif()
endforeach(t)
elseif( c STREQUAL "AllTargetsDisassemblers" )
# Link all the disassemblers from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}Disassembler )
list(APPEND expanded_components "LLVM${t}Disassembler")
endif()
endforeach(t)
elseif( c STREQUAL "AllTargetsInfos" )
# Link all the infos from all the targets
foreach(t ${LLVM_TARGETS_TO_BUILD})
if( TARGET LLVM${t}Info )
list(APPEND expanded_components "LLVM${t}Info")
endif()
endforeach(t)
else( NOT idx LESS 0 )
# Canonize the component name:
string(TOUPPER "${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)
if( NOT iltl_result )
message(FATAL_ERROR "Library `${c}' not found in list of llvm libraries.")
endif()
else( lib_idx LESS 0 )
list(GET LLVM_AVAILABLE_LIBS ${lib_idx} canonical_lib)
list(APPEND expanded_components ${canonical_lib})
endif( lib_idx LESS 0 )
endif( NOT idx LESS 0 )
endforeach(c)
set(${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)
list(FIND visited_libs ${name} found)
if( found LESS 0 )
list(APPEND visited_libs ${name})
set(visited_libs ${visited_libs} PARENT_SCOPE)
get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${name})
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 ${name})
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()
list(REVERSE required_libs)
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)