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 ${executable} TYPE)
  43   if("${t}" STREQUAL "STATIC_LIBRARY")
  44     target_link_libraries(${executable} ${cmake_2_8_12_INTERFACE} ${LIBRARIES})
  45   elseif("${t}" STREQUAL "SHARED_LIBRARY" OR "${t}" STREQUAL "MODULE_LIBRARY")
  46     target_link_libraries(${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 a variant intended for the final user:
  55 function(llvm_map_components_to_libraries OUT_VAR)
  56   explicit_map_components_to_libraries(result ${ARGN})
  57   set( ${OUT_VAR} ${result} ${sys_result} PARENT_SCOPE )
  58 endfunction(llvm_map_components_to_libraries)
  59
  60 # Map LINK_COMPONENTS to actual libnames.
  61 function(llvm_map_components_to_libnames out_libs)
  62   set( link_components ${ARGN} )
  63   if(NOT LLVM_AVAILABLE_LIBS)
  64     # Inside LLVM itself available libs are in a global property.
  65     get_property(LLVM_AVAILABLE_LIBS GLOBAL PROPERTY LLVM_LIBS)
  66   endif()
  67   string(TOUPPER "${LLVM_AVAILABLE_LIBS}" capitalized_libs)
  68
  69   # Expand some keywords:
  70   list(FIND LLVM_TARGETS_TO_BUILD "${LLVM_NATIVE_ARCH}" have_native_backend)
  71   list(FIND link_components "engine" engine_required)
  72   if( NOT engine_required EQUAL -1 )
  73     list(FIND LLVM_TARGETS_WITH_JIT "${LLVM_NATIVE_ARCH}" have_jit)
  74     if( NOT have_native_backend EQUAL -1 AND NOT have_jit EQUAL -1 )
  75       list(APPEND link_components "jit")
  76       list(APPEND link_components "native")
  77     else()
  78       list(APPEND link_components "interpreter")
  79     endif()
  80   endif()
  81   list(FIND link_components "native" native_required)
  82   if( NOT native_required EQUAL -1 )
  83     if( NOT have_native_backend EQUAL -1 )
  84       list(APPEND link_components ${LLVM_NATIVE_ARCH})
  85     endif()
  86   endif()
  87
  88   # Translate symbolic component names to real libraries:
  89   foreach(c ${link_components})
  90     # add codegen, asmprinter, asmparser, disassembler
  91     list(FIND LLVM_TARGETS_TO_BUILD ${c} idx)
  92     if( NOT idx LESS 0 )
  93       if( TARGET LLVM${c}CodeGen )
  94         list(APPEND expanded_components "LLVM${c}CodeGen")
  95       else()
  96         if( TARGET LLVM${c} )
  97           list(APPEND expanded_components "LLVM${c}")
  98         else()
  99           message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
 100         endif()
 101       endif()
 102       if( TARGET LLVM${c}AsmPrinter )
 103         list(APPEND expanded_components "LLVM${c}AsmPrinter")
 104       endif()
 105       if( TARGET LLVM${c}AsmParser )
 106         list(APPEND expanded_components "LLVM${c}AsmParser")
 107       endif()
 108       if( TARGET LLVM${c}Info )
 109         list(APPEND expanded_components "LLVM${c}Info")
 110       endif()
 111       if( TARGET LLVM${c}Disassembler )
 112         list(APPEND expanded_components "LLVM${c}Disassembler")
 113       endif()
 114     elseif( c STREQUAL "native" )
 115       # already processed
 116     elseif( c STREQUAL "nativecodegen" )
 117       list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}CodeGen")
 118     elseif( c STREQUAL "backend" )
 119       # same case as in `native'.
 120     elseif( c STREQUAL "engine" )
 121       # already processed
 122     elseif( c STREQUAL "all" )
 123       list(APPEND expanded_components ${LLVM_AVAILABLE_LIBS})
 124     else( NOT idx LESS 0 )
 125       # Canonize the component name:
 126       string(TOUPPER "${c}" capitalized)
 127       list(FIND capitalized_libs LLVM${capitalized} lib_idx)
 128       if( lib_idx LESS 0 )
 129         # The component is unknown. Maybe is an omitted target?
 130         is_llvm_target_library(${c} iltl_result)
 131         if( NOT iltl_result )
 132           message(FATAL_ERROR "Library `${c}' not found in list of llvm libraries.")
 133         endif()
 134       else( lib_idx LESS 0 )
 135         list(GET LLVM_AVAILABLE_LIBS ${lib_idx} canonical_lib)
 136         list(APPEND expanded_components ${canonical_lib})
 137       endif( lib_idx LESS 0 )
 138     endif( NOT idx LESS 0 )
 139   endforeach(c)
 140
 141   set(${out_libs} ${expanded_components} PARENT_SCOPE)
 142 endfunction()
 143
 144 # Expand dependencies while topologically sorting the list of libraries:
 145 function(llvm_expand_dependencies out_libs)
 146   set(expanded_components ${ARGN})
 147   list(LENGTH expanded_components lst_size)
 148   set(cursor 0)
 149   set(processed)
 150   while( cursor LESS lst_size )
 151     list(GET expanded_components ${cursor} lib)
 152     get_property(lib_deps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_${lib})
 153     list(APPEND expanded_components ${lib_deps})
 154     # Remove duplicates at the front:
 155     list(REVERSE expanded_components)
 156     list(REMOVE_DUPLICATES expanded_components)
 157     list(REVERSE expanded_components)
 158     list(APPEND processed ${lib})
 159     # Find the maximum index that doesn't have to be re-processed:
 160     while(NOT "${expanded_components}" MATCHES "^${processed}.*" )
 161       list(REMOVE_AT processed -1)
 162     endwhile()
 163     list(LENGTH processed cursor)
 164     list(LENGTH expanded_components lst_size)
 165   endwhile( cursor LESS lst_size )
 166   set(${out_libs} ${expanded_components} PARENT_SCOPE)
 167 endfunction()
 168
 169 function(explicit_map_components_to_libraries out_libs)
 170   llvm_map_components_to_libnames(link_libs ${ARGN})
 171   llvm_expand_dependencies(expanded_components ${link_libs})
 172   # Return just the libraries included in this build:
 173   set(result)
 174   foreach(c ${expanded_components})
 175     if( TARGET ${c} )
 176       set(result ${result} ${c})
 177     endif()
 178   endforeach(c)
 179   set(${out_libs} ${result} PARENT_SCOPE)
 180 endfunction(explicit_map_components_to_libraries)