[FreeBSD 10-3] undefined reference to getsourcefilter /setsourcefilter

[Adrian Chadd]

Some extern "C" { } around some includes? :)


-a


On 8 May 2016 at 14:46, Victor Toni <victor.toni at gmail.com> wrote:
> Trying to port mcproxy to FreeBSD I encountered a quite strange problem.
> Compiling everything works but linking fails with the following error:
>
> $ c++ -v -Wl,-rpath,/usr/local/lib -pthread -o mcproxy main.o
>  hamcast_logging.o  mc_socket.o  addr_storage.o  mroute_socket.o  if_prop.o
>  reverse_path_filter.o  proxy.o  sender.o  receiver.o  mld_receiver.o
>  igmp_receiver.o  mld_sender.o  igmp_sender.o  proxy_instance.o  routing.o
>  worker.o  timing.o  check_if.o  check_kernel.o  membership_db.o  querier.o
>  timers_values.o  interfaces.o  def.o  simple_mc_proxy_routing.o
>  simple_routing_data.o  scanner.o  token.o  configuration.o  parser.o
>  interface.o    -L/usr/local/lib -L/usr/lib -lpthread
> FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
> Target: i386-unknown-freebsd10.3
> Thread model: posix
> Selected GCC installation:
>  "/usr/bin/ld" --eh-frame-hdr -dynamic-linker /libexec/ld-elf.so.1
> --hash-style=both --enable-new-dtags -m elf_i386_fbsd -o mcproxy
> /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/local/lib
> -L/usr/lib -L/usr/lib -rpath /usr/local/lib main.o hamcast_logging.o
> mc_socket.o addr_storage.o mroute_socket.o if_prop.o reverse_path_filter.o
> proxy.o sender.o receiver.o mld_receiver.o igmp_receiver.o mld_sender.o
> igmp_sender.o proxy_instance.o routing.o worker.o timing.o check_if.o
> check_kernel.o membership_db.o querier.o timers_values.o interfaces.o def.o
> simple_mc_proxy_routing.o simple_routing_data.o scanner.o token.o
> configuration.o parser.o interface.o -lpthread -lc++ -lm -lgcc --as-needed
> -lgcc_s --no-as-needed -lpthread -lc -lgcc --as-needed -lgcc_s
> --no-as-needed /usr/lib/crtend.o /usr/lib/crtn.o
> mc_socket.o: In function `mc_socket::set_source_filter(unsigned int,
> addr_storage const&, unsigned int, std::__1::list<addr_storage,
> std::__1::allocator<addr_storage> > const&) const':
> src/utils/mc_socket.cpp:(.text+0x29cc): undefined reference to
> `setsourcefilter(int, unsigned int, sockaddr*, unsigned int, unsigned int,
> unsigned int, sockaddr_storage*)'
> mc_socket.o: In function `mc_socket::get_source_filter(unsigned int,
> addr_storage const&, unsigned int&, std::__1::list<addr_storage,
> std::__1::allocator<addr_storage> >&) const':
> src/utils/mc_socket.cpp:(.text+0x2c29): undefined reference to
> `getsourcefilter(int, unsigned int, sockaddr*, unsigned int, unsigned int*,
> unsigned int*, sockaddr_storage*)'
> src/utils/mc_socket.cpp:(.text+0x2cae): undefined reference to
> `getsourcefilter(int, unsigned int, sockaddr*, unsigned int, unsigned int*,
> unsigned int*, sockaddr_storage*)'
> c++: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
> The methods should be found:
>
> $ readelf -s /usr/lib/libc.a | grep etsourcefilter
>     10: 00000600   392 FUNC    GLOBAL DEFAULT    1 getsourcefilter
>     12: 00000290   305 FUNC    GLOBAL DEFAULT    1 setsourcefilter
>
>
> What am I missing?
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