Linking error on latest rust "error: linking with cc failed: exit code: 1"

[mitchmindtree]

Really not sure why this has appeared all of a sudden, but it's appearing on both travis and my local machine.

   Compiling portaudio v0.4.9 (file:///Users/Mitch/Programming/Rust/rust-portaudio)
error: linking with `cc` failed: exit code: 1
note: "cc" "-m64" "-L" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib" "-o" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/examples/non_blocking" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/examples/non_blocking.o" "-Wl,-force_load,/usr/local/lib/rustlib/x86_64-apple-darwin/lib/libmorestack.a" "-Wl,-dead_strip" "-nodefaultlibs" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/libportaudio.rlib" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps/libnum-b6664aad0573bf89.rlib" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps/librustc_serialize-9ef26f158d5284e0.rlib" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps/libbitflags-518ea12e21428edd.rlib" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps/librand-b924d9fc5b3eb5b8.rlib" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps/liblibc-674726c388d62fa2.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/libstd-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/libcollections-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/librustc_unicode-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/librand-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/liballoc-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/liblibc-4e7c5e5c.rlib" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib/libcore-4e7c5e5c.rlib" "-L" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug" "-L" "/Users/Mitch/Programming/Rust/rust-portaudio/target/debug/deps" "-L" "/usr/local/lib" "-L" "/usr/local/lib" "-L" "/usr/local/lib/rustlib/x86_64-apple-darwin/lib" "-L" "/Users/Mitch/Programming/Rust/rust-portaudio/.rust/lib/x86_64-apple-darwin" "-L" "/Users/Mitch/Programming/Rust/rust-portaudio/lib/x86_64-apple-darwin" "-L" "/Users/Mitch/.rust/lib/x86_64-apple-darwin" "-lportaudio" "-lportaudio" "-framework" "CoreAudio" "-framework" "AudioToolbox" "-framework" "AudioUnit" "-framework" "Carbon" "-lc" "-lm" "-lSystem" "-lpthread" "-lc" "-lm" "-lcompiler-rt"
note: ld: warning: directory not found for option '-L/Users/Mitch/Programming/Rust/rust-portaudio/.rust/lib/x86_64-apple-darwin'
ld: warning: directory not found for option '-L/Users/Mitch/Programming/Rust/rust-portaudio/lib/x86_64-apple-darwin'
Undefined symbols for architecture x86_64:
  "_Pa_IsFormatSupported", referenced from:
      pa::is_format_supported::h1ef3fd3c748d2d7bwUc in libportaudio.rlib(portaudio.o)
  "_Pa_Terminate", referenced from:
      pa::terminate::h856c916ea7636e63ZTc in libportaudio.rlib(portaudio.o)
  "_Pa_GetVersionText", referenced from:
      pa::get_version_text::h1d9d5a55302362ecgTc in libportaudio.rlib(portaudio.o)
  "_Pa_GetDefaultInputDevice", referenced from:
      pa::device::get_default_input::h924f4c1b20bf1a283Qc in libportaudio.rlib(portaudio.o)
  "_Pa_GetHostApiInfo", referenced from:
      pa::host::get_api_info::h2fbcc6a5c8c1e723cSc in libportaudio.rlib(portaudio.o)
  "_Pa_GetDefaultOutputDevice", referenced from:
      pa::device::get_default_output::hed9ab2ede0d6545abRc in libportaudio.rlib(portaudio.o)
  "_Pa_StartStream", referenced from:
      pa::Stream$LT$I$C$$u20$O$GT$::start::h15868907980879137214 in non_blocking.o
  "_Pa_GetDeviceInfo", referenced from:
      pa::device::get_info::h769a764d65668102jRc in libportaudio.rlib(portaudio.o)
  "_Pa_IsStreamActive", referenced from:
      pa::Stream$LT$I$C$$u20$O$GT$::is_active::h16392955518606313780 in non_blocking.o
  "_Pa_Initialize", referenced from:
      pa::initialize::h3439edf44263d4b1GTc in libportaudio.rlib(portaudio.o)
  "_Pa_GetVersion", referenced from:
      pa::get_version::hd1aab81cb90c65618Sc in libportaudio.rlib(portaudio.o)
  "_Pa_GetDefaultHostApi", referenced from:
      pa::host::get_default_api::h27f764f218f6182e4Rc in libportaudio.rlib(portaudio.o)
  "_Pa_CloseStream", referenced from:
      pa::Stream$LT$I$C$$u20$O$GT$::close::h10379566129765308786 in non_blocking.o
  "_Pa_GetHostApiCount", referenced from:
      pa::host::get_api_count::ha9d2e7fee5b02461WRc in libportaudio.rlib(portaudio.o)
  "_Pa_OpenStream", referenced from:
      pa::Stream$LT$I$C$$u20$O$GT$::open::h2200290684482684206 in non_blocking.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

error: aborting due to previous error
Could not compile `portaudio`.

[mitchmindtree]

Might be related to this - investigating now.

[mitchmindtree]

Only occurs when building the examples, the crate itself seems to build fine.

[mitchmindtree]

Here are the error logs produced by travis.

[mitchmindtree]

It seems this issue was introduced when cargo decided to remove the hash from the compiled libs, resulting in a conflict between the system libportaudio and the produced libportaudio.

I've posted an issue at the Cargo repo for discussion.

In the mean-time we can avoid this by either 1. renaming the crate or 2. not producing a dylib - I think we might as well wait to see the fait of the above issue as it would be nice to avoid both of these options :)