REMOVE UNNECESSARY COMPILE FLAGS

- Remove -DUNICODE.
- Remove -municode.
- Simplify MSVC warning adjustments.

CMakeLists.txt

@@ -42,23 +42,13 @@ if (NOT BASE64_INCLUDED)
 
     ####################################################################
     # platform/compiler specific configuration
-    if(WIN32)
-        add_definitions(-DUNICODE)
-        if(MINGW)
-            set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -municode")
-        elseif(MSVC)
-            macro(ADJUST_MSVC_WARNING_LEVEL FLAGS_VAR_NAME)
-                if(${${FLAGS_VAR_NAME}} MATCHES "/W[0-4]")
-                    string(REGEX REPLACE "/W[0-4]" "/W4" ${FLAGS_VAR_NAME} "${${FLAGS_VAR_NAME}}")
-                else()
-                    set(${FLAGS_VAR_NAME} "${${FLAGS_VAR_NAME}} /W4")
-                endif()
-            endmacro()
-
-            add_definitions(-D_CRT_SECURE_NO_WARNINGS)
-            # Force to always compile with W4
-            ADJUST_MSVC_WARNING_LEVEL(CMAKE_C_FLAGS)
-            #ADJUST_MSVC_WARNING_LEVEL(CMAKE_CXX_FLAGS)
+    if(MSVC)
+        # Force to always compile with W4
+        add_definitions(-D_CRT_SECURE_NO_WARNINGS)
+        if(${CMAKE_C_FLAGS} MATCHES "/W[0-4]")
+            string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+        else()
+            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
         endif()
     endif()
     if (BASE64_GNU_C_COMPATIBLE)