modules_api fix for MacOS. test fixed

test/app/CMakeLists.txt

 include_directories(${CMAKE_BINARY_DIR}/src/trivia)
 add_library(module_api SHARED module_api.c)
-target_link_libraries(module_api -rdynamic)
 set_target_properties(module_api PROPERTIES PREFIX "")
+if(TARGET_OS_DARWIN)
+    set_target_properties(module_api PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
+endif(TARGET_OS_DARWIN)
 add_dependencies(module_api generate_module_api)

test/app/module_api.test.lua

@@ -2,7 +2,7 @@
 
 box.cfg{logger = "tarantool.log"}
 
-package.cpath = '../app/?.so;'..package.cpath
+package.cpath = '../app/?.so;../app/?.dylib;'..package.cpath
 
 local test = require('tap').test("module_api", function(test)
     test:plan(7)