llvm-2.1 fails to build on Leopard (10.5.1)

[kain.nomad@…]

I've already installed llvm-2.0 on Mac OS X 10.5.1. But, llvm-2.1 fails to build. (port selfupdate is done, of course)

--->  Fetching llvm
--->  Verifying checksum(s) for llvm
--->  Extracting llvm
--->  Configuring llvm
--->  Building llvm with target tools-only
Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_llvm/work/build" && make tools-only " returned error 2
Command output: llvm[1]: Building llvm-config script.
make[2]: Nothing to be done for `all'.
llvm[2]: Compiling AnalysisWrappers.cpp for Release build 
llvm[2]: Compiling GraphPrinters.cpp for Release build 
llvm[2]: Compiling PrintSCC.cpp for Release build 
llvm[2]: Compiling opt.cpp for Release build 
llvm[2]: Linking Release executable opt (without symbols)
Undefined symbols:
  "llvm::createGVNPREPass()", referenced from:
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
  "llvm::createLoopUnswitchPass(bool)", referenced from:
      (anonymous namespace)::AddStandardCompilePasses(llvm::PassManager&)                                                                                                                                                          in opt.o
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
  "llvm::createScalarReplAggregatesPass(int)", referenced from:
      (anonymous namespace)::AddStandardCompilePasses(llvm::PassManager&)                                                                                                                                                          in opt.o
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
  "llvm::createGVNPass()", referenced from:
      (anonymous namespace)::AddStandardCompilePasses(llvm::PassManager&)                                                                                                                                                          in opt.o
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
  "llvm::CheckBitcodeOutputToConsole(std::basic_ostream<char, std::char_traits<char> >*, bool)", referenced from:
      _main in opt.o
  "llvm::createLoopIndexSplitPass()", referenced from:
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
  "llvm::createRedundantLoadEliminationPass()", referenced from:
      (anonymous namespace)::ForcePassLinking::ForcePassLinking()                                                                                                                                        in opt.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_llvm/work/build/Release/bin/opt] Error 1
make[1]: *** [opt/.makeall] Error 2
make: *** [all] Error 1

Error: Status 1 encountered during processing.