Problem while running Ruby code from C

[madgen]

After a clean compilation I get the following error when I try to run the compiled binary on OS X El Capitan.

dyld: lazy symbol binding failed: Symbol not found: _ruby_init
  Referenced from: /Users/user/p/c/playground/./a.out
  Expected in: flat namespace

dyld: Symbol not found: _ruby_init
  Referenced from: /Users/user/p/c/playground/./a.out
  Expected in: flat namespace

[1]    64228 trace trap  ./a.out

The compilation flags are as follows:

$ gcc call_ruby.c $(pkg-config --cflags --libs ruby-2.2)

And pkg-config evaluates to the following:

-I/Users/user/.rbenv/versions/2.2.2/include/ruby-2.2.0/x86_64-darwin15 -I/Users/user/.rbenv/versions/2.2.2/include/ruby-2.2.0 -Wl,-undefined,dynamic_lookup -Wl,-multiply_defined,suppress -lpthread -lgmp -ldl -lobjc

I tried to recompile Ruby as I upgraded OS version in the meantime, but didn't change anything.

[dmitry]

@madgen post a ruby and C code here :)

[silverhammermba]

Sorry for being insanely late seeing this. I don't have an OSX machine so I can't reproduce. But at a glance I don't see any -lruby for linking with the Ruby lib. That seems consistent with the missing symbol. I'm not sure why pkg-config doesn't pick that up.

[silverhammermba]

Years later and now I have an OSX machine. I still can't reproduce this sort of error. Check out the Makefiles from _test and _include in the repo: they work fine on OSX.