cmake/modules/LLVM-Config.cmake

   1 function(get_system_libs return_var)
   2   message(AUTHOR_WARNING "get_system_libs no longer needed")
   3   set(${return_var} "" PARENT_SCOPE)
   4 endfunction()
   5
   6
   7 function(link_system_libs target)
   8   message(AUTHOR_WARNING "link_system_libs no longer needed")
   9 endfunction()
  10
  11
  12 function(is_llvm_target_library library return_var)
  13   # Sets variable `return_var' to ON if `library' corresponds to a
  14   # LLVM supported target. To OFF if it doesn't.
  15   set(${return_var} OFF PARENT_SCOPE)
  16   string(TOUPPER "${library}" capitalized_lib)
  17   string(TOUPPER "${LLVM_ALL_TARGETS}" targets)
  18   foreach(t ${targets})
  19     if( capitalized_lib STREQUAL t OR
  20         capitalized_lib STREQUAL "LLVM${t}" OR
  21         capitalized_lib STREQUAL "LLVM${t}CODEGEN" OR
  22         capitalized_lib STREQUAL "LLVM${t}ASMPARSER" OR
  23         capitalized_lib STREQUAL "LLVM${t}ASMPRINTER" OR
  24         capitalized_lib STREQUAL "LLVM${t}DISASSEMBLER" OR
  25         capitalized_lib STREQUAL "LLVM${t}INFO" )
  26       set(${return_var} ON PARENT_SCOPE)
  27       break()
  28     endif()
  29   endforeach()
  30 endfunction(is_llvm_target_library)
  31
  32
  33 macro(llvm_config executable)
  34   explicit_llvm_config(${executable} ${ARGN})
  35 endmacro(llvm_config)
  36
  37
  38 function(explicit_llvm_config executable)
  39   set( link_components ${ARGN} )
  40
  41   llvm_map_components_to_libnames(LIBRARIES ${link_components})
  42   get_target_property(t ${executable} TYPE)
  43   if("x${t}" STREQUAL "xSTATIC_LIBRARY")
  44     target_link_libraries(${executable} ${cmake_2_8_12_INTERFACE} ${LIBRARIES})
  45   elseif("x${t}" STREQUAL "xSHARED_LIBRARY" OR "x${t}" STREQUAL "xMODULE_LIBRARY")
  46     target_link_libraries(${executable} ${cmake_2_8_12_PRIVATE} ${LIBRARIES})
  47   else()
  48     # Use plain form for legacy user.
  49     target_link_libraries(${executable} ${LIBRARIES})
  50   endif()
  51 endfunction(explicit_llvm_config)
  52
  53
  54 # This is Deprecated
  55 function(llvm_map_components_to_libraries OUT_VAR)
  56   message(AUTHOR_WARNING "Using llvm_map_components_to_libraries() is deprecated. Use llvm_map_components_to_libnames() instead")
  57   explicit_map_components_to_libraries(result ${ARGN})
  58   set( ${OUT_VAR} ${result} ${sys_result} PARENT_SCOPE )
  59 endfunction(llvm_map_components_to_libraries)
  60
  61 # This is a variant intended for the final user:
  62 # Map LINK_COMPONENTS to actual libnames.
  63 function(llvm_map_components_to_libnames out_libs)
  64   set( link_components ${ARGN} )
  65   if(NOT LLVM_AVAILABLE_LIBS)
  66     # Inside LLVM itself available libs are in a global property.
  67     get_property(LLVM_AVAILABLE_LIBS GLOBAL PROPERTY LLVM_LIBS)
  68   endif()
  69   string(TOUPPER "${LLVM_AVAILABLE_LIBS}" capitalized_libs)
  70
  71   # Expand some keywords:
  72   list(FIND LLVM_TARGETS_TO_BUILD "${LLVM_NATIVE_ARCH}" have_native_backend)
  73   list(FIND link_components "engine" engine_required)
  74   if( NOT engine_required EQUAL -1 )
  75     list(FIND LLVM_TARGETS_WITH_JIT "${LLVM_NATIVE_ARCH}" have_jit)
  76     if( NOT have_native_backend EQUAL -1 AND NOT have_jit EQUAL -1 )
  77       list(APPEND link_components "jit")
  78       list(APPEND link_components "native")
  79     else()
  80       list(APPEND link_components "interpreter")
  81     endif()
  82   endif()
  83   list(FIND link_components "native" native_required)
  84   if( NOT native_required EQUAL -1 )
  85     if( NOT have_native_backend EQUAL -1 )
  86       list(APPEND link_components ${LLVM_NATIVE_ARCH})
  87     endif()
  88   endif()
  89
  90   # Translate symbolic component names to real libraries:
  91   foreach(c ${link_components})
  92     # add codegen, asmprinter, asmparser, disassembler
  93     list(FIND LLVM_TARGETS_TO_BUILD ${c} idx)
  94     if( NOT idx LESS 0 )
  95       if( TARGET LLVM${c}CodeGen )
  96         list(APPEND expanded_components "LLVM${c}CodeGen")
  97       else()
  98         if( TARGET LLVM${c} )
  99           list(APPEND expanded_components "LLVM${c}")
 100         else()
 101           message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
 102         endif()
 103       endif()
 104       if( TARGET LLVM${c}AsmPrinter )
 105         list(APPEND expanded_components "LLVM${c}AsmPrinter")
 106       endif()
 107       if( TARGET LLVM${c}AsmParser )
 108         list(APPEND expanded_components "LLVM${c}AsmParser")
 109       endif()
 110       if( TARGET LLVM${c}Desc )
 111         list(APPEND expanded_components "LLVM${c}Desc")
 112       endif()
 113       if( TARGET LLVM${c}Info )
 114         list(APPEND expanded_components "LLVM${c}Info")
 115       endif()
 116       if( TARGET LLVM${c}Disassembler )
 117         list(APPEND expanded_components "LLVM${c}Disassembler")
 118       endif()
 119     elseif( c STREQUAL "native" )
 120       # already processed
 121     elseif( c STREQUAL "nativecodegen" )
 122       list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}CodeGen")
 123       if( TARGET LLVM${LLVM_NATIVE_ARCH}Desc )
 124         list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}Desc")
 125       endif()
 126       if( TARGET LLVM${LLVM_NATIVE_ARCH}Info )
 127         list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}Info")
 128       endif()
 129     elseif( c STREQUAL "backend" )
 130       # same case as in `native'.
 131     elseif( c STREQUAL "engine" )
 132       # already processed
 133     elseif( c STREQUAL "all" )
 134       list(APPEND expanded_components ${LLVM_AVAILABLE_LIBS})
 135     else( NOT idx LESS 0 )
 136       # Canonize the component name:
 137       string(TOUPPER "${c}" capitalized)
 138       list(FIND capitalized_libs LLVM${capitalized} lib_idx)
 139       if( lib_idx LESS 0 )
 140         # The component is unknown. Maybe is an omitted target?
 141         is_llvm_target_library(${c} iltl_result)
 142         if( NOT iltl_result )
 143           message(FATAL_ERROR "Library `${c}' not found in list of llvm libraries.")
 144         endif()
 145       else( lib_idx LESS 0 )
 146         list(GET LLVM_AVAILABLE_LIBS ${lib_idx} canonical_lib)
 147         list(APPEND expanded_components ${canonical_lib})
 148       endif( lib_idx LESS 0 )
 149     endif( NOT idx LESS 0 )
 150   endforeach(c)
 151
 152   set(${out_libs} ${expanded_components} PARENT_SCOPE)
 153 endfunction()
 154
 155 # Perform a post-order traversal of the dependency graph.
 156 # This duplicates the algorithm used by llvm-config, originally
 157 # in tools/llvm-config/llvm-config.cpp, function ComputeLibsForComponents.
 158 function(expand_topologically name required_libs visited_libs)
 159   list(FIND visited_libs ${name} found)
 160   if( found LESS 0 )
 161     list(APPEND visited_libs ${name})
 162     set(visited_libs ${visited_libs} PARENT_SCOPE)
 163
 164     get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${name})
 165     foreach( lib_dep ${lib_deps} )
 166       expand_topologically(${lib_dep} "${required_libs}" "${visited_libs}")
 167       set(required_libs ${required_libs} PARENT_SCOPE)
 168       set(visited_libs ${visited_libs} PARENT_SCOPE)
 169     endforeach()
 170
 171     list(APPEND required_libs ${name})
 172     set(required_libs ${required_libs} PARENT_SCOPE)
 173   endif()
 174 endfunction()
 175
 176 # Expand dependencies while topologically sorting the list of libraries:
 177 function(llvm_expand_dependencies out_libs)
 178   set(expanded_components ${ARGN})
 179
 180   set(required_libs)
 181   set(visited_libs)
 182   foreach( lib ${expanded_components} )
 183     expand_topologically(${lib} "${required_libs}" "${visited_libs}")
 184   endforeach()
 185
 186   list(REVERSE required_libs)
 187   set(${out_libs} ${required_libs} PARENT_SCOPE)
 188 endfunction()
 189
 190 function(explicit_map_components_to_libraries out_libs)
 191   llvm_map_components_to_libnames(link_libs ${ARGN})
 192   llvm_expand_dependencies(expanded_components ${link_libs})
 193   # Return just the libraries included in this build:
 194   set(result)
 195   foreach(c ${expanded_components})
 196     if( TARGET ${c} )
 197       set(result ${result} ${c})
 198     endif()
 199   endforeach(c)
 200   set(${out_libs} ${result} PARENT_SCOPE)
 201 endfunction(explicit_map_components_to_libraries)