$ sudo port install -u llvm-gcc42
--->  Building llvm-gcc42
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-gcc42/work/build" && make all " returned error 2
Command output: [ -f stage_final ] || echo stage3 > stage_final
rm -f stage_current
make[4]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[4]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
rm -f stage_current
make[4]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[4]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all'.
/usr/bin/g++-4.0   -g -O2 -mdynamic-no-pic -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wmissing-format-attribute    -DHAVE_CONFIG_H  -o cc1-dummy c-lang.o stub-objc.o attribs.o c-errors.o c-lex.o c-pragma.o c-decl.o c-typeck.o c-convert.o c-aux-info.o c-common.o c-opts.o c-format.o c-semantics.o c-incpath.o cppdefault.o c-ppoutput.o c-cppbuiltin.o prefix.o c-objc-common.o c-dump.o c-pch.o c-parser.o darwin-c.o rs6000-c.o c-gimplify.o tree-mudflap.o c-pretty-print.o c-omp.o dummy-checksum.o \
  llvm-main.o  libbackend.a ../libcpp/libcpp.a /opt/local/lib/llvm/obj/Release/lib/libLLVMBitReader.a /opt/local/lib/llvm/obj/Release/lib/libLLVMipo.a /opt/local/lib/llvm/obj/Release/lib/libLLVMBitWriter.a /opt/local/lib/llvm/obj/Release/lib/LLVMPowerPCAsmPrinter.o /opt/local/lib/llvm/obj/Release/lib/LLVMPowerPCCodeGen.o /opt/local/lib/llvm/obj/Release/lib/libLLVMSelectionDAG.a /opt/local/lib/llvm/obj/Release/lib/libLLVMAsmPrinter.a /opt/local/lib/llvm/obj/Release/lib/libLLVMCodeGen.a /opt/local/lib/llvm/obj/Release/lib/libLLVMScalarOpts.a /opt/local/lib/llvm/obj/Release/lib/libLLVMTransformUtils.a /opt/local/lib/llvm/obj/Release/lib/libLLVMipa.a /opt/local/lib/llvm/obj/Release/lib/libLLVMAnalysis.a /opt/local/lib/llvm/obj/Release/lib/libLLVMTarget.a /opt/local/lib/llvm/obj/Release/lib/libLLVMCore.a /opt/local/lib/llvm/obj/Release/lib/libLLVMSupport.a /opt/local/lib/llvm/obj/Release/lib/libLLVMSystem.a ../libcpp/libcpp.a -L/opt/local/lib -lintl -liconv -lc  -L/opt/local/lib -liconv ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -L/opt/local/lib/llvm/obj/Release/lib  -lpthread -lm 
/usr/libexec/gcc/powerpc-apple-darwin8/4.0.1/ld: Undefined symbols:
___floatundidf
collect2: ld returned 1 exit status
make[3]: *** [cc1-dummy] Error 1
make[2]: *** [all-stage2-gcc] Error 2
make[1]: *** [stage2-bubble] Error 2
make: *** [all] Error 2

Error: Status 1 encountered during processing.