diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7c89f6f..61912b4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,28 @@ add_library(${DECODER_LIB_NAME}
     $<TARGET_OBJECTS:bit_stream>
     )
 
+# SIMD命令をどこまで使うか？
+set(USE_SIMD_INTRINSICS "" CACHE STRING "Using SIMD operations (SSE41 or AVX2)")
+if("${USE_SIMD_INTRINSICS}" STREQUAL "SSE41")
+    add_compile_definitions(SRLA_USE_SSE41)
+    if(NOT MSVC)
+        add_compile_options(-msse4.1)
+    endif()
+elseif("${USE_SIMD_INTRINSICS}" STREQUAL "AVX2")
+    add_compile_definitions(SRLA_USE_AVX2)
+    if(MSVC)
+        add_compile_options(/arch:AVX2)
+    else()
+        add_compile_options(-msse4.1 -mavx2)
+    endif()
+endif()
+
+# 最適化オプション
+if(MSVC)
+    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Oi /Ot /Oy /GL")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
+endif()
+
 # 依存するプロジェクト
 add_subdirectory(libs)
 
diff --git a/libs/srla_decoder/CMakeLists.txt b/libs/srla_decoder/CMakeLists.txt
index 710e03e..cfd3ef8 100644
--- a/libs/srla_decoder/CMakeLists.txt
+++ b/libs/srla_decoder/CMakeLists.txt
@@ -41,11 +41,3 @@ set_target_properties(${LIB_NAME}
     C_STANDARD 90 C_EXTENSIONS OFF
     MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>"
     )
-
-# SIMD命令をどこまで使うか？
-set(USE_SIMD_INTRINSICS "" CACHE STRING "Using SIMD operations (SSE41 or AVX2)")
-if("${USE_SIMD_INTRINSICS}" STREQUAL "SSE41")
-    add_compile_definitions(SRLADECODER_USE_SSE41)
-elseif("${USE_SIMD_INTRINSICS}" STREQUAL "AVX2")
-    add_compile_definitions(SRLADECODER_USE_AVX2)
-endif()
diff --git a/libs/srla_decoder/src/srla_lpc_synthesize.c b/libs/srla_decoder/src/srla_lpc_synthesize.c
index 31f016b..889e6aa 100644
--- a/libs/srla_decoder/src/srla_lpc_synthesize.c
+++ b/libs/srla_decoder/src/srla_lpc_synthesize.c
@@ -5,7 +5,7 @@
 #include "srla_utility.h"
 
 /* LPC係数により合成(in-place) */
-#if defined(SRLADECODER_USE_SSE41)
+#if defined(SRLA_USE_SSE41)
 #ifdef _MSC_VER
 #include <intrin.h>
 #define DECLALIGN(x) __declspec(align(x))
@@ -104,7 +104,7 @@ void SRLALPC_Synthesize(
         data[smpl] -= (predict >> coef_rshift);
     }
 }
-#elif defined(SRLADECODER_USE_AVX2)
+#elif defined(SRLA_USE_AVX2)
 #ifdef _MSC_VER
 #include <immintrin.h>
 #define DECLALIGN(x) __declspec(align(x))
diff --git a/libs/srla_encoder/CMakeLists.txt b/libs/srla_encoder/CMakeLists.txt
index 471bfd6..35698bf 100644
--- a/libs/srla_encoder/CMakeLists.txt
+++ b/libs/srla_encoder/CMakeLists.txt
@@ -41,11 +41,3 @@ set_target_properties(${LIB_NAME}
     C_STANDARD 90 C_EXTENSIONS OFF
     MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>"
     )
-
-# SIMD命令をどこまで使うか？
-set(USE_SIMD_INTRINSICS "" CACHE STRING "Using SIMD operations (SSE41 or AVX2)")
-if("${USE_SIMD_INTRINSICS}" STREQUAL "SSE41")
-    add_compile_definitions(SRLAENCODER_USE_SSE41)
-elseif("${USE_SIMD_INTRINSICS}" STREQUAL "AVX2")
-    add_compile_definitions(SRLAENCODER_USE_AVX2)
-endif()
diff --git a/libs/srla_encoder/src/srla_lpc_predict.c b/libs/srla_encoder/src/srla_lpc_predict.c
index 67a4482..27bb32a 100644
--- a/libs/srla_encoder/src/srla_lpc_predict.c
+++ b/libs/srla_encoder/src/srla_lpc_predict.c
@@ -4,7 +4,7 @@
 #include "srla_internal.h"
 
 /* LPC係数により予測/誤差出力 */
-#if defined(SRLAENCODER_USE_SSE41)
+#if defined(SRLA_USE_SSE41)
 #ifdef _MSC_VER
 #include <intrin.h>
 #define DECLALIGN(x) __declspec(align(x))
@@ -107,7 +107,7 @@ void SRLALPC_Predict(
         residual[smpl] += (predict >> coef_rshift);
     }
 }
-#elif defined(SRLAENCODER_USE_AVX2)
+#elif defined(SRLA_USE_AVX2)
 #ifdef _MSC_VER
 #include <immintrin.h>
 #define DECLALIGN(x) __declspec(align(x))