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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} dl)
endif()
if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD )
set(system_libs ${system_libs} pthread)
endif()
endif( MINGW )
endif( NOT MSVC )
set(${return_var} ${system_libs} PARENT_SCOPE)
endfunction(get_system_libs)
macro(llvm_config executable)
explicit_llvm_config(${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)
function(explicit_map_components_to_libraries out_libs)
set( link_components ${ARGN} )
foreach(c ${link_components})
# add codegen, asmprinter, asmparser
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${c}Info")
endif()
elseif( c STREQUAL "native" )
list(APPEND expanded_components "LLVM${LLVM_NATIVE_ARCH}CodeGen")
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" )
# TODO: as we assume we are on X86, this is `jit'.
list(APPEND expanded_components "LLVMJIT")
elseif( c STREQUAL "all" )
list(APPEND expanded_components ${llvm_libs})
else( NOT idx LESS 0 )
list(APPEND expanded_components LLVM${c})
endif( NOT idx LESS 0 )
endforeach(c)
# We must match capitalization.
string(TOUPPER "${llvm_libs}" capitalized_libs)
list(REMOVE_DUPLICATES expanded_components)
list(LENGTH expanded_components lst_size)
set(result "")
while( 0 LESS ${lst_size} )
list(GET expanded_components 0 c)
string(TOUPPER "${c}" capitalized)
list(FIND capitalized_libs ${capitalized} idx)
if( idx LESS 0 )
message(FATAL_ERROR "Library ${c} not found in list of llvm libraries.")
endif( idx LESS 0 )
list(GET llvm_libs ${idx} canonical_lib)
list(REMOVE_ITEM result ${canonical_lib})
list(APPEND result ${canonical_lib})
foreach(c ${MSVC_LIB_DEPS_${canonical_lib}})
list(REMOVE_ITEM expanded_components ${c})
endforeach()
list(APPEND expanded_components ${MSVC_LIB_DEPS_${canonical_lib}})
list(REMOVE_AT expanded_components 0)
list(LENGTH expanded_components lst_size)
endwhile( 0 LESS ${lst_size} )
set(${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)
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