Add file log support

CMakeLists.txt

@@ -68,24 +68,6 @@ if(WIN32)
 	add_definitions(-D_SCL_SECURE_NO_WARNINGS)
 endif()
 
-# Group sources by dir.
-# Usage: source_group_by_dir(SRCS)
-macro(GROUP_SOURCES_BY_DIR source_files)
-    set(sgbd_cur_dir ${CMAKE_CURRENT_BINARY_DIR})
-    foreach(sgbd_file ${${source_files}})
-        #message("sgbd_fpath=${sgbd_fpath}")
-        string(REGEX REPLACE ${sgbd_cur_dir}/\(.*\) \\1 sgbd_fpath ${sgbd_file})
-        string(REGEX REPLACE "\(.*\)/.*" \\1 sgbd_group_name ${sgbd_fpath})
-        string(COMPARE EQUAL ${sgbd_fpath} ${sgbd_group_name} sgbd_nogroup)
-        string(REPLACE "/" "\\" sgbd_group_name ${sgbd_group_name})
-        if(sgbd_nogroup)
-            set(sgbd_group_name "\\")
-        endif()
-        #message("group name=${sgbd_group_name}")
-        source_group(${sgbd_group_name} FILES ${sgbd_file})
-    endforeach()
-endmacro()
-
 # C++ standard requirements.
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)