Mac OS X Sierra : Undefined symbols for architecture x86_64

Question

I am trying to build a C source file based on Linphone in Mac OS X Sierra but getting the following error.

This is the link for the C source file. http://www.linphone.org/docs/liblinphone/group__basic__call__tutorials.html

Edited:

I am trying to compile the source code with this command

clang -o tt tt.c -I/Users/softdev/Downloads/linphone-sdk-3.11.1-mac/include/

Error:

Undefined symbols for architecture x86_64
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I have tried to change the target cpu but didn't work.

My system has XCode 8. Any help regarding this will be appreciated.

Edited: Complete Output

Undefined symbols for architecture x86_64:
  "_linphone_call_get_state", referenced from:
      _main in tt-ca2045.o
  "_linphone_call_ref", referenced from:
      _main in tt-ca2045.o
  "_linphone_call_unref", referenced from:
      _main in tt-ca2045.o
  "_linphone_core_destroy", referenced from:
      _main in tt-ca2045.o
  "_linphone_core_invite", referenced from:
      _main in tt-ca2045.o
  "_linphone_core_iterate", referenced from:
      _main in tt-ca2045.o
  "_linphone_core_new", referenced from:
      _main in tt-ca2045.o
  "_linphone_core_terminate_call", referenced from:
      _main in tt-ca2045.o
  "_ms_usleep", referenced from:
      _main in tt-ca2045.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Solution

I got the sample code to compile using this:

clang -o hello hello.c -Ilinphone-sdk-3/include -Llinphone-sdk-3/lib -llinphone -lmediastreamer_base

Clang's -I parameter points to the where the header (.h) files live

And as for my additions, -L specifies the path for clang to get to where the lib files live. In your case, it might live in -L/Users/softdev/Downloads/linphone-sdk-3.11.1-mac/lib

then -l specifies which dylibs you want to include (strip off the lib prefix and the dylib suffix).

Lastly, you need to add a missing line to the sample code you pointed to. Add:

#include <unistd.h>

after signal.h