diff --git a/blake2b_simd.cpp b/blake2b_simd.cpp
index f408b8fa..7e3a5832 100644
--- a/blake2b_simd.cpp
+++ b/blake2b_simd.cpp
@@ -33,11 +33,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_SSE41_AVAILABLE)
 # include <emmintrin.h>
diff --git a/blake2s_simd.cpp b/blake2s_simd.cpp
index 4d00f609..a25cc1cd 100644
--- a/blake2s_simd.cpp
+++ b/blake2s_simd.cpp
@@ -43,11 +43,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_SSE41_AVAILABLE)
 # include <emmintrin.h>
diff --git a/chacha_simd.cpp b/chacha_simd.cpp
index 4e5a3cc3..556070e5 100644
--- a/chacha_simd.cpp
+++ b/chacha_simd.cpp
@@ -45,11 +45,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_ARM_NEON_HEADER)
 # include <arm_neon.h>
diff --git a/cham_simd.cpp b/cham_simd.cpp
index b848ba10..8048fd3d 100644
--- a/cham_simd.cpp
+++ b/cham_simd.cpp
@@ -23,11 +23,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 // Clang intrinsic casts, http://bugs.llvm.org/show_bug.cgi?id=20670
 #define DOUBLE_CAST(x) ((double*)(void*)(x))
diff --git a/config_ver.h b/config_ver.h
index c28abb86..a771de44 100644
--- a/config_ver.h
+++ b/config_ver.h
@@ -87,4 +87,10 @@
 # define CRYPTOPP_MSC_VERSION (_MSC_VER)
 #endif
 
+// To control <x86intrin.h> include. May need a guard, like GCC 4.5 and above
+// Also see https://stackoverflow.com/a/42493893 and https://github.com/weidai11/cryptopp/issues/1198
+#if defined(CRYPTOPP_GCC_VERSION) || defined(CRYPTOPP_APPLE_CLANG_VERSION) || defined(CRYPTOPP_LLVM_CLANG_VERSION)
+# define CRYPTOPP_GCC_COMPATIBLE 1
+#endif
+
 #endif  // CRYPTOPP_CONFIG_VERSION_H
diff --git a/keccak_simd.cpp b/keccak_simd.cpp
index 5a534a99..b2cf62ee 100644
--- a/keccak_simd.cpp
+++ b/keccak_simd.cpp
@@ -27,11 +27,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 // Squash MS LNK4221 and libtool warnings
 extern const char KECCAK_SIMD_FNAME[] = __FILE__;
diff --git a/lea_simd.cpp b/lea_simd.cpp
index 7ea9cfa5..a016cb38 100644
--- a/lea_simd.cpp
+++ b/lea_simd.cpp
@@ -23,11 +23,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_ARM_NEON_HEADER)
 # include "adv_simd.h"
diff --git a/lsh256_avx.cpp b/lsh256_avx.cpp
index 88df6a17..f4ac6b57 100644
--- a/lsh256_avx.cpp
+++ b/lsh256_avx.cpp
@@ -25,8 +25,7 @@ extern const char LSH256_AVX_FNAME[] = __FILE__;
 # include <immintrin.h>
 #endif
 
-// GCC at 4.5. Clang is unknown. Also see https://stackoverflow.com/a/42493893.
-#if (CRYPTOPP_GCC_VERSION >= 40500)
+#if defined(CRYPTOPP_GCC_COMPATIBLE)
 # include <x86intrin.h>
 #endif
 
diff --git a/lsh256_sse.cpp b/lsh256_sse.cpp
index fe96b789..cec70b77 100644
--- a/lsh256_sse.cpp
+++ b/lsh256_sse.cpp
@@ -30,8 +30,7 @@ extern const char LSH256_SSE_FNAME[] = __FILE__;
 # include <ammintrin.h>
 #endif
 
-// GCC at 4.5. Clang is unknown. Also see https://stackoverflow.com/a/42493893.
-#if (CRYPTOPP_GCC_VERSION >= 40500)
+#if defined(CRYPTOPP_GCC_COMPATIBLE)
 # include <x86intrin.h>
 #endif
 
diff --git a/lsh512_avx.cpp b/lsh512_avx.cpp
index afb3ba24..56fed7c8 100644
--- a/lsh512_avx.cpp
+++ b/lsh512_avx.cpp
@@ -25,8 +25,7 @@ extern const char LSH512_AVX_FNAME[] = __FILE__;
 # include <immintrin.h>
 #endif
 
-// GCC at 4.5. Clang is unknown. Also see https://stackoverflow.com/a/42493893.
-#if (CRYPTOPP_GCC_VERSION >= 40500)
+#if defined(CRYPTOPP_GCC_COMPATIBLE)
 # include <x86intrin.h>
 #endif
 
diff --git a/lsh512_sse.cpp b/lsh512_sse.cpp
index cc08ccef..96cffd45 100644
--- a/lsh512_sse.cpp
+++ b/lsh512_sse.cpp
@@ -29,8 +29,7 @@ extern const char LSH512_SSE_FNAME[] = __FILE__;
 # include <ammintrin.h>
 #endif
 
-// GCC at 4.5. Clang is unknown. Also see https://stackoverflow.com/a/42493893.
-#if (CRYPTOPP_GCC_VERSION >= 40500)
+#if defined(CRYPTOPP_GCC_COMPATIBLE)
 # include <x86intrin.h>
 #endif
 
diff --git a/misc.h b/misc.h
index f81e81f4..be9fcf38 100644
--- a/misc.h
+++ b/misc.h
@@ -80,9 +80,11 @@
 #endif
 
 #if defined(__BMI__)
-# include <x86intrin.h>
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
+#  include <x86intrin.h>
+# endif
 # include <immintrin.h>
-#endif  // GCC and BMI
+#endif  // BMI
 
 // More LLVM bullshit. Apple Clang 6.0 does not define them.
 // Later version of Clang defines them and results in warnings.
diff --git a/simon128_simd.cpp b/simon128_simd.cpp
index 5a0aaddf..4503dd90 100644
--- a/simon128_simd.cpp
+++ b/simon128_simd.cpp
@@ -23,11 +23,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_ARM_NEON_HEADER)
 # include "adv_simd.h"
diff --git a/speck128_simd.cpp b/speck128_simd.cpp
index a17ce38d..0130aca8 100644
--- a/speck128_simd.cpp
+++ b/speck128_simd.cpp
@@ -23,11 +23,11 @@
 #endif
 
 #if defined(__XOP__)
-# include <ammintrin.h>
-# if defined(__GNUC__)
+# if defined(CRYPTOPP_GCC_COMPATIBLE)
 #  include <x86intrin.h>
 # endif
-#endif
+# include <ammintrin.h>
+#endif  // XOP
 
 #if (CRYPTOPP_ARM_NEON_HEADER)
 # include "adv_simd.h"