llvm-3.0: automatic rebuild via rev-upgrade fails with 'Undefined symbols for architecture x86_64: "_LLVMInitializeARMDisassembler"'

[lpsinger (Leo Singer)]

An automatic rebuild of llvm-3.0 triggered by an upgrade of libffi from libffi @3.0.10_2+universal to libffi @3.0.10_2+universal fails on my OS X Lion machine. The relevant part of the (attached) build log appears to be:

:info:build ld: warning: ignoring file /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-3.0/llvm-3.0/work/llvm-3.0.src/Release+Debug/lib/libLLVMARMDisassembler.a, file was built for archive which is not the architecture being linked (x86_64)
:info:build Undefined symbols for architecture x86_64:
:info:build   "_LLVMInitializeARMDisassembler", referenced from:
:info:build       _LLVMCreateDisasm in libLLVMMCDisassembler.a(Disassembler.o)
:info:build       llvm::EDDisassembler::initialize() in libLLVMMCDisassembler.a(EDDisassembler.o)
:info:build ld: symbol(s) not found for architecture x86_64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)

[jeremyhu (Jeremy Huddleston Sequoia)]

Works for me...

/opt/local/libexec/llvm-3.0/lib $ nm libLLVMARMDisassembler.a | grep _LLVMInitializeARMDisassembler
0000000000000000 T _LLVMInitializeARMDisassembler
000000000010d3b8 S _LLVMInitializeARMDisassembler.eh

[jeremyhu (Jeremy Huddleston Sequoia)]

And I *just* rebuilt it due to the same libffi issue.

[jeremyhu (Jeremy Huddleston Sequoia)]

Any further info? I can't reproduce your failure...

[lpsinger (Leo Singer)]

No; the issue went away on its own.