This morning, I tried to launch
rtorrent on Mac OS X 10.10.3, and it failed with a "symbol not found" in libtorrent (I've lost the backtrace from my screen).
Tried a bunch of stuff, as documented below, but no luck on getting it to build.
I've seen that error before, and as I recall, it requires rebuilding
libtorrent, so I did
brew uninstall rtorrent libtorrent brew install libtorrent brew install rtorrent
The latter now fails due to an error in
brew install -vd rtorrent shows the following:
libtool: link: g++-5 -g -O2 -DNDEBUG -D_THREAD_SAFE -I/usr/local/Cellar/libtorrent/0.13.4/include -o rtorrent main.o -Wl,-bind_at_load libsub_root.a ui/libsub_ui.a core/libsub_core.a display/libsub_display.a input/libsub_input.a rpc/libsub_rpc.a utils/libsub_utils.a -lncurses -lcurl -L/usr/local/Cellar/libtorrent/0.13.4/lib -ltorrent Undefined symbols for architecture x86_64: "std::__basic_file<char>::is_open() const", referenced from: rpc::parse_command_file(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) in libsub_rpc.a(parse_commands.o) [...]
and so on for lots of pages. So it appears to be a linker failure?
In Brew Install Rtorrent not Working, it seems the problem is with gcc 5.0.1. I tried following the instructions there (downgrade to gcc 4.9.2):
brew switch gcc 4.9.2
That works, but then
brew install rtorrent fails even more spectacularly:
checking for Cppunit - version >= 1.9.6... no checking whether the C++ compiler works... no configure: error: in `/private/tmp/rtorrent20150526-82101-c1xxo5/rtorrent-0.9.4': configure: error: C++ compiler cannot create executables See `config.log' for more details
I look in
config.log, and the problem is here:
configure:3319: checking whether the C++ compiler works configure:3341: g++-4.9 conftest.cpp >&5 dyld: Library not loaded: /usr/local/lib/libisl.10.dylib Referenced from: /usr/local/Cellar/gcc/4.9.2/libexec/gcc/x86_64-apple-darwin14.0.0/4.9.2/cc1plus Reason: image not found g++-4.9: internal compiler error: Trace/BPT trap: 5 (program cc1plus) ./configure: line 3343: 82310 Abort trap: 6 $CXX $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5
That ain't good. Wonder where
libisl10.dylib might have gotten to?