function(get_system_libs return_var) # Returns in `return_var' a list of system libraries used by LLVM. if( NOT MSVC ) if( MINGW ) set(system_libs ${system_libs} imagehlp psapi) elseif( CMAKE_HOST_UNIX ) if( HAVE_LIBDL ) set(system_libs ${system_libs} ${CMAKE_DL_LIBS}) endif() if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD ) set(system_libs ${system_libs} pthread) endif() endif( MINGW ) endif( NOT MSVC ) set(${return_var} ${system_libs} PARENT_SCOPE) endfunction(get_system_libs) function(is_llvm_target_library library return_var) # Sets variable `return_var' to ON if `library' corresponds to a # LLVM supported target. To OFF if it doesn't. set(${return_var} OFF PARENT_SCOPE) string(TOUPPER "${library}" capitalized_lib) string(TOUPPER "${LLVM_ALL_TARGETS}" targets) foreach(t ${targets}) if( capitalized_lib STREQUAL "LLVM${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} ) explicit_map_components_to_libraries(LIBRARIES ${link_components}) target_link_libraries(${executable} ${LIBRARIES}) endfunction(explicit_llvm_config) # This is a variant intended for the final user: function(llvm_map_components_to_libraries OUT_VAR) explicit_map_components_to_libraries(result ${ARGN}) get_system_libs(sys_result) set( ${OUT_VAR} ${result} ${sys_result} PARENT_SCOPE ) endfunction(llvm_map_components_to_libraries) function(explicit_map_components_to_libraries out_libs) set( link_components ${ARGN} ) get_property(llvm_libs GLOBAL PROPERTY LLVM_LIBS) string(TOUPPER "${llvm_libs}" capitalized_libs) # Expand some keywords: list(FIND link_components "engine" engine_required) if( engine_required ) # TODO: as we assume we are on X86, this is `jit'. list(APPEND link_components "jit") list(APPEND link_components "native") endif() list(FIND link_components "native" native_required) if( native_required ) list(APPEND link_components "X86") endif() # Translate symbolic component names to real libraries: foreach(c ${link_components}) # add codegen, asmprinter, asmparser, disassembler list(FIND LLVM_TARGETS_TO_BUILD ${c} idx) if( NOT idx LESS 0 ) list(FIND llvm_libs "LLVM${c}CodeGen" idx) if( NOT idx LESS 0 ) list(APPEND expanded_components "LLVM${c}CodeGen") else() list(FIND llvm_libs "LLVM${c}" idx) if( NOT idx LESS 0 ) list(APPEND expanded_components "LLVM${c}") else() message(FATAL_ERROR "Target ${c} is not in the set of libraries.") endif() endif() list(FIND llvm_libs "LLVM${c}AsmPrinter" asmidx) if( NOT asmidx LESS 0 ) list(APPEND expanded_components "LLVM${c}AsmPrinter") endif() list(FIND llvm_libs "LLVM${c}AsmParser" asmidx) if( NOT asmidx LESS 0 ) list(APPEND expanded_components "LLVM${c}AsmParser") endif() list(FIND llvm_libs "LLVM${c}Info" asmidx) if( NOT asmidx LESS 0 ) list(APPEND expanded_components "LLVM${c}Info") endif() list(FIND llvm_libs "LLVM${c}Disassembler" asmidx) if( NOT asmidx LESS 0 ) 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") elseif( c STREQUAL "backend" ) # same case as in `native'. elseif( c STREQUAL "engine" ) # already processed elseif( c STREQUAL "all" ) list(APPEND expanded_components ${llvm_libs}) else( NOT idx LESS 0 ) # Canonize the component name: string(TOUPPER "${c}" capitalized) list(FIND capitalized_libs LLVM${capitalized} lib_idx) if( lib_idx LESS 0 ) # The component is unkown. Maybe is an ommitted target? is_llvm_target_library(${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_libs ${lib_idx} canonical_lib) list(APPEND expanded_components ${canonical_lib}) endif( lib_idx LESS 0 ) endif( NOT idx LESS 0 ) endforeach(c) # Expand dependencies while topologically sorting the list of libraries: list(LENGTH expanded_components lst_size) set(cursor 0) set(processed) while( cursor LESS lst_size ) list(GET expanded_components ${cursor} lib) list(APPEND expanded_components ${MSVC_LIB_DEPS_${lib}}) # Remove duplicates at the front: list(REVERSE expanded_components) list(REMOVE_DUPLICATES expanded_components) list(REVERSE expanded_components) list(APPEND processed ${lib}) # Find the maximum index that doesn't have to be re-processed: while(NOT "${expanded_components}" MATCHES "^${processed}.*" ) list(REMOVE_AT processed -1) endwhile() list(LENGTH processed cursor) list(LENGTH expanded_components lst_size) endwhile( cursor LESS lst_size ) # Return just the libraries included in this build: set(result) foreach(c ${expanded_components}) list(FIND llvm_libs ${c} lib_idx) if( NOT lib_idx LESS 0 ) set(result ${result} ${c}) endif() endforeach(c) set(${out_libs} ${result} PARENT_SCOPE) endfunction(explicit_map_components_to_libraries) # The library dependency data is contained in the file # LLVMLibDeps.cmake on this directory. It is automatically generated # by tools/llvm-config/CMakeLists.txt when the build comprises all the # targets and we are on a environment Posix enough to build the # llvm-config script. This, in practice, just excludes MSVC. # When you remove or rename a library from the build, be sure to # remove its file from lib/ as well, or the GenLibDeps.pl script will # include it on its analysis! # The format generated by GenLibDeps.pl # LLVMARMAsmPrinter.o: LLVMARMCodeGen.o libLLVMAsmPrinter.a libLLVMCodeGen.a libLLVMCore.a libLLVMSupport.a libLLVMTarget.a # is translated to: # set(MSVC_LIB_DEPS_LLVMARMAsmPrinter LLVMARMCodeGen LLVMAsmPrinter LLVMCodeGen LLVMCore LLVMSupport LLVMTarget) # It is necessary to remove the `lib' prefix and the `.a'. # This 'sed' script should do the trick: # 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 include(LLVMLibDeps)