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204 lines
7.1 KiB
CMake
Executable File
204 lines
7.1 KiB
CMake
Executable File
function(get_system_libs return_var)
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# Returns in `return_var' a list of system libraries used by LLVM.
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if( NOT MSVC )
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if( MINGW )
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set(system_libs ${system_libs} imagehlp psapi)
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elseif( CMAKE_HOST_UNIX )
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if( HAVE_LIBDL )
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set(system_libs ${system_libs} ${CMAKE_DL_LIBS})
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endif()
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if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD )
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set(system_libs ${system_libs} pthread)
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endif()
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endif( MINGW )
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endif( NOT MSVC )
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set(${return_var} ${system_libs} PARENT_SCOPE)
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endfunction(get_system_libs)
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function(link_system_libs target)
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get_system_libs(llvm_system_libs)
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target_link_libraries(${target} ${llvm_system_libs})
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endfunction(link_system_libs)
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function(is_llvm_target_library library return_var)
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# Sets variable `return_var' to ON if `library' corresponds to a
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# LLVM supported target. To OFF if it doesn't.
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set(${return_var} OFF PARENT_SCOPE)
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string(TOUPPER "${library}" capitalized_lib)
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string(TOUPPER "${LLVM_ALL_TARGETS}" targets)
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foreach(t ${targets})
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if( capitalized_lib STREQUAL t OR
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capitalized_lib STREQUAL "LLVM${t}" OR
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capitalized_lib STREQUAL "LLVM${t}CODEGEN" OR
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capitalized_lib STREQUAL "LLVM${t}ASMPARSER" OR
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capitalized_lib STREQUAL "LLVM${t}ASMPRINTER" OR
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capitalized_lib STREQUAL "LLVM${t}DISASSEMBLER" OR
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capitalized_lib STREQUAL "LLVM${t}INFO" )
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set(${return_var} ON PARENT_SCOPE)
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break()
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endif()
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endforeach()
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endfunction(is_llvm_target_library)
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macro(llvm_config executable)
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explicit_llvm_config(${executable} ${ARGN})
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endmacro(llvm_config)
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function(explicit_llvm_config executable)
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set( link_components ${ARGN} )
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explicit_map_components_to_libraries(LIBRARIES ${link_components})
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target_link_libraries(${executable} ${LIBRARIES})
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endfunction(explicit_llvm_config)
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# This is a variant intended for the final user:
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function(llvm_map_components_to_libraries OUT_VAR)
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explicit_map_components_to_libraries(result ${ARGN})
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get_system_libs(sys_result)
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set( ${OUT_VAR} ${result} ${sys_result} PARENT_SCOPE )
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endfunction(llvm_map_components_to_libraries)
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function(explicit_map_components_to_libraries out_libs)
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set( link_components ${ARGN} )
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get_property(llvm_libs GLOBAL PROPERTY LLVM_LIBS)
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string(TOUPPER "${llvm_libs}" capitalized_libs)
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# Expand some keywords:
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list(FIND LLVM_TARGETS_TO_BUILD "${LLVM_NATIVE_ARCH}" have_native_backend)
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list(FIND link_components "engine" engine_required)
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if( NOT engine_required EQUAL -1 )
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list(FIND LLVM_TARGETS_WITH_JIT "${LLVM_NATIVE_ARCH}" have_jit)
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if( NOT have_native_backend EQUAL -1 AND NOT have_jit EQUAL -1 )
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list(APPEND link_components "jit")
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list(APPEND link_components "native")
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else()
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list(APPEND link_components "interpreter")
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endif()
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endif()
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list(FIND link_components "native" native_required)
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if( NOT native_required EQUAL -1 )
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if( NOT have_native_backend EQUAL -1 )
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list(APPEND link_components ${LLVM_NATIVE_ARCH})
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endif()
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endif()
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# Translate symbolic component names to real libraries:
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foreach(c ${link_components})
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# add codegen, asmprinter, asmparser, disassembler
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list(FIND LLVM_TARGETS_TO_BUILD ${c} idx)
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if( NOT idx LESS 0 )
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list(FIND llvm_libs "LLVM${c}CodeGen" idx)
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if( NOT idx LESS 0 )
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list(APPEND expanded_components "LLVM${c}CodeGen")
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else()
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list(FIND llvm_libs "LLVM${c}" idx)
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if( NOT idx LESS 0 )
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list(APPEND expanded_components "LLVM${c}")
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else()
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message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
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endif()
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endif()
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list(FIND llvm_libs "LLVM${c}AsmPrinter" asmidx)
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if( NOT asmidx LESS 0 )
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list(APPEND expanded_components "LLVM${c}AsmPrinter")
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endif()
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list(FIND llvm_libs "LLVM${c}AsmParser" asmidx)
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if( NOT asmidx LESS 0 )
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list(APPEND expanded_components "LLVM${c}AsmParser")
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endif()
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list(FIND llvm_libs "LLVM${c}Info" asmidx)
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if( NOT asmidx LESS 0 )
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list(APPEND expanded_components "LLVM${c}Info")
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endif()
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list(FIND llvm_libs "LLVM${c}Disassembler" asmidx)
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if( NOT asmidx LESS 0 )
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list(APPEND expanded_components "LLVM${c}Disassembler")
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endif()
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elseif( c STREQUAL "native" )
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# already processed
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elseif( c STREQUAL "nativecodegen" )
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list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}CodeGen")
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elseif( c STREQUAL "backend" )
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# same case as in `native'.
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elseif( c STREQUAL "engine" )
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# already processed
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elseif( c STREQUAL "all" )
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list(APPEND expanded_components ${llvm_libs})
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else( NOT idx LESS 0 )
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# Canonize the component name:
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string(TOUPPER "${c}" capitalized)
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list(FIND capitalized_libs LLVM${capitalized} lib_idx)
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if( lib_idx LESS 0 )
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# The component is unknown. Maybe is an omitted target?
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is_llvm_target_library(${c} iltl_result)
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if( NOT iltl_result )
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message(FATAL_ERROR "Library `${c}' not found in list of llvm libraries.")
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endif()
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else( lib_idx LESS 0 )
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list(GET llvm_libs ${lib_idx} canonical_lib)
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list(APPEND expanded_components ${canonical_lib})
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endif( lib_idx LESS 0 )
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endif( NOT idx LESS 0 )
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endforeach(c)
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# Expand dependencies while topologically sorting the list of libraries:
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list(LENGTH expanded_components lst_size)
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set(cursor 0)
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set(processed)
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while( cursor LESS lst_size )
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list(GET expanded_components ${cursor} lib)
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list(APPEND expanded_components ${MSVC_LIB_DEPS_${lib}})
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# Remove duplicates at the front:
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list(REVERSE expanded_components)
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list(REMOVE_DUPLICATES expanded_components)
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list(REVERSE expanded_components)
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list(APPEND processed ${lib})
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# Find the maximum index that doesn't have to be re-processed:
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while(NOT "${expanded_components}" MATCHES "^${processed}.*" )
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list(REMOVE_AT processed -1)
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endwhile()
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list(LENGTH processed cursor)
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list(LENGTH expanded_components lst_size)
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endwhile( cursor LESS lst_size )
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# Return just the libraries included in this build:
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set(result)
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foreach(c ${expanded_components})
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list(FIND llvm_libs ${c} lib_idx)
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if( NOT lib_idx LESS 0 )
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set(result ${result} ${c})
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endif()
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endforeach(c)
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set(${out_libs} ${result} PARENT_SCOPE)
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endfunction(explicit_map_components_to_libraries)
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# The library dependency data is contained in the file
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# LLVMLibDeps.cmake on this directory. It is automatically generated
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# by tools/llvm-config/CMakeLists.txt when the build comprises all the
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# targets and we are on a environment Posix enough to build the
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# llvm-config script. This, in practice, just excludes MSVC.
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# When you remove or rename a library from the build, be sure to
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# remove its file from lib/ as well, or the GenLibDeps.pl script will
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# include it on its analysis!
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# The format generated by GenLibDeps.pl
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# LLVMARMAsmPrinter.o: LLVMARMCodeGen.o libLLVMAsmPrinter.a libLLVMCodeGen.a libLLVMCore.a libLLVMSupport.a libLLVMTarget.a
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# is translated to:
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# set(MSVC_LIB_DEPS_LLVMARMAsmPrinter LLVMARMCodeGen LLVMAsmPrinter LLVMCodeGen LLVMCore LLVMSupport LLVMTarget)
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# It is necessary to remove the `lib' prefix and the `.a'.
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# This 'sed' script should do the trick:
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# sed -e s'#\.a##g' -e 's#libLLVM#LLVM#g' -e 's#: # #' -e 's#\(.*\)#set(MSVC_LIB_DEPS_\1)#' ~/llvm/tools/llvm-config/LibDeps.txt
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include(LLVMLibDeps)
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