NIF compiled as Mach format on Linux

[pallix]

Hello,

Using crc on Linux causes the following problem:

iex(1)> CRC.crc_16("hello")
2017-11-23 12:37:09.102 pid=<0.1289.0> [warn] : The on_load function for module crc_nif returned:
{:error,
 {:load_failed,
  'Failed to load NIF library: \'/home/user/projects/xyz/_build/dev/lib/crc/priv/crc_nif.so: invalid ELF header\''}}

** (UndefinedFunctionError) function :crc_nif.crc_16/1 is undefined (module :crc_nif is not available)
    (crc) :crc_nif.crc_16("hello")

The error is due to crc-0.7.0 package, containing the files c_src/env.mk and priv/crc_nif.so. Since these files are built and environment dependent, they must not be included in the package. priv/crc_nif.so is a MACH format compiled binary, causing the error.

[TattdCodeMonkey]

There were changes to the make file in v0.7 which is the likely cause here.

All the previous versions also had nifs and .so files too.

I’ll see about reproducing and working on a solution to this sometime this week. Thanks for logging the issue.

Cc: @potatosalad

[potatosalad]

@TattdCodeMonkey (initial guess) It sounds like c_src/env.mk and the compiled shared library was included in the package published to hex.

[TattdCodeMonkey]

@pallix I just published v0.7.1 That should not include c_src/env.mk, *.o or *.so files.

[TattdCodeMonkey]

Tested v0.7.1 in vagrant with ubuntu and latest elixir & erlang and everything compiled and tested 👍 closing this issue. Thanks again for reporting.