xcode adjustments

CMakeLists.txt

@@ -47,7 +47,7 @@ else()
   else()
     set(ARCH_FLAG "-march=${ARCH}")
   endif()
-  set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wundef -Wvla -Wwrite-strings -Werror -Wno-error=extra -Wno-error=deprecated-declarations -Wno-error=sign-compare -Wno-error=strict-aliasing -Wno-error=type-limits -Wno-unused-parameter -Wno-error=unused-variable")
+  set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wundef -Wvla -Wwrite-strings -Wno-error=extra -Wno-error=deprecated-declarations -Wno-error=sign-compare -Wno-error=strict-aliasing -Wno-error=type-limits -Wno-unused-parameter -Wno-error=unused-variable -Wundef")
   if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
     set(WARNINGS "${WARNINGS} -Wno-error=mismatched-tags -Wno-error=null-conversion -Wno-overloaded-shift-op-parentheses -Wno-error=shift-count-overflow -Wno-error=tautological-constant-out-of-range-compare -Wno-error=unused-private-field -Wno-error=unneeded-internal-declaration")
   else()
@@ -132,6 +132,7 @@ if(MSVC AND (${Boost_MAJOR_VERSION} EQUAL 1) AND (${Boost_MINOR_VERSION} EQUAL 5
   message(SEND_ERROR "Boost version 1.54 is unsupported, more details are available here http://goo.gl/RrCFmA")
 endif()
 
+
 include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
 if(MINGW)
   set(Boost_LIBRARIES "${Boost_LIBRARIES};ws2_32;mswsock")