diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1352b36d..249452d6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -158,37 +158,37 @@ endif()
 include(AddCXXCompilerFlag)
 if (NOT MSVC)
   add_cxx_compiler_flag("-Wall")
+  add_cxx_compiler_flag("-Wextra")
+  add_cxx_compiler_flag("-Wimplicit-fallthrough=2")
+  add_cxx_compiler_flag("-Wpointer-arith")
+  add_cxx_compiler_flag("-Wcast-qual")
+  add_cxx_compiler_flag("-Wsign-compare")
+  add_cxx_compiler_flag("-Wduplicated-branches")
+  add_cxx_compiler_flag("-Wduplicated-cond")
+  add_cxx_compiler_flag("-Walloc-zero")
+  add_cxx_compiler_flag("-Wlogical-op")
+  add_cxx_compiler_flag("-Wno-tautological-compare")
+  add_cxx_compiler_flag("-Wpointer-arith")
+  add_cxx_compiler_flag("-Wvla")
+  add_cxx_compiler_flag("-Wnon-virtual-dtor")
+  add_cxx_compiler_flag("-Wno-unused-parameter")
+  add_cxx_compiler_flag("-Wconversion")
+  add_cxx_compiler_flag("-Wno-sign-conversion")
+  add_cxx_compiler_flag("-Wc++14-compat-pedantic")
+  add_cxx_compiler_flag("-Qunused-arguments")
+  add_cxx_compiler_flag("-Wodr")
+  add_cxx_compiler_flag("-flto-odr-type-merging")
+
+#  add_cxx_compiler_flag("-Werror")
+
+#  add_cxx_compiler_flag("-Wcast-align")
+
+#std::int32_t <-> int and off_t <-> std::size_t/std::int64_t
+#  add_cxx_compiler_flag("-Wuseless-cast")
+
+#external headers like openssl
+#  add_cxx_compiler_flag("-Wzero-as-null-pointer-constant")
 endif()
-add_cxx_compiler_flag("-Wextra")
-add_cxx_compiler_flag("-Wimplicit-fallthrough=2")
-add_cxx_compiler_flag("-Wpointer-arith")
-add_cxx_compiler_flag("-Wcast-qual")
-add_cxx_compiler_flag("-Wsign-compare")
-add_cxx_compiler_flag("-Wduplicated-branches")
-add_cxx_compiler_flag("-Wduplicated-cond")
-add_cxx_compiler_flag("-Walloc-zero")
-add_cxx_compiler_flag("-Wlogical-op")
-add_cxx_compiler_flag("-Wno-tautological-compare")
-add_cxx_compiler_flag("-Wpointer-arith")
-add_cxx_compiler_flag("-Wvla")
-add_cxx_compiler_flag("-Wnon-virtual-dtor")
-add_cxx_compiler_flag("-Wno-unused-parameter")
-add_cxx_compiler_flag("-Wconversion")
-add_cxx_compiler_flag("-Wno-sign-conversion")
-add_cxx_compiler_flag("-Wc++14-compat-pedantic")
-add_cxx_compiler_flag("-Qunused-arguments")
-add_cxx_compiler_flag("-Wodr")
-add_cxx_compiler_flag("-flto-odr-type-merging")
-
-#add_cxx_compiler_flag("-Werror")
-
-#add_cxx_compiler_flag("-Wcast-align")
-
-# std::int32_t <-> int and off_t <-> std::size_t/std::int64_t
-#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wuseless-cast")
-
-# external headers like openssl
-#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wzero-as-null-pointer-constant")
 
 #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -isystem /usr/include/c++/v1")
 #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")