fix build on xcode with openmp

build_files/cmake/platform/platform_apple.cmake

@@ -394,10 +394,16 @@ if(WITH_OPENMP)
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L${LIBDIR}/openmp/lib -lomp")
 
 		# Copy libomp.dylib to allow executables like datatoc to work.
-		execute_process(
-			COMMAND mkdir -p ${CMAKE_BINARY_DIR}/Resources/lib
-			COMMAND cp -p ${LIBDIR}/openmp/lib/libomp.dylib ${CMAKE_BINARY_DIR}/Resources/lib/libomp.dylib
-		)
+    if(CMAKE_MAKE_PROGRAM MATCHES "xcodebuild")
+      set(OPENMP_DYLIB_AUX_PATH "${CMAKE_BINARY_DIR}/bin")
+    else()
+      set(OPENMP_DYLIB_AUX_PATH "${CMAKE_BINARY_DIR}")
+    endif()
+
+    execute_process(
+      COMMAND mkdir -p ${OPENMP_DYLIB_AUX_PATH}/Resources/lib
+      COMMAND cp -p ${LIBDIR}/openmp/lib/libomp.dylib ${OPENMP_DYLIB_AUX_PATH}/Resources/lib/libomp.dylib
+      )
 	endif()
 endif()