diff --git a/sha.cpp b/sha.cpp
index f02c0e19..441a5c65 100644
--- a/sha.cpp
+++ b/sha.cpp
@@ -20,6 +20,13 @@
 #include "misc.h"
 #include "cpu.h"
 
+#if defined(CRYPTOPP_DISABLE_SHA_ASM)
+# undef CRYPTOPP_X86_ASM_AVAILABLE
+# undef CRYPTOPP_X32_ASM_AVAILABLE
+# undef CRYPTOPP_X64_ASM_AVAILABLE
+# undef CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+#endif
+
 NAMESPACE_BEGIN(CryptoPP)
 
 // start of Steve Reid's code
@@ -102,7 +109,7 @@ void SHA256::InitState(HashWordType *state)
 	memcpy(state, s, sizeof(s));
 }
 
-#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && !defined(CRYPTOPP_DISABLE_SHA_ASM)
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
 CRYPTOPP_ALIGN_DATA(16) extern const word32 SHA256_K[64] CRYPTOPP_SECTION_ALIGN16 = {
 #else
 extern const word32 SHA256_K[64] = {
@@ -127,7 +134,7 @@ extern const word32 SHA256_K[64] = {
 
 #endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
 
-#if (defined(CRYPTOPP_X86_ASM_AVAILABLE) || defined(CRYPTOPP_X32_ASM_AVAILABLE) || defined(CRYPTOPP_GENERATE_X64_MASM)) && !defined(CRYPTOPP_DISABLE_SHA_ASM)
+#if (defined(CRYPTOPP_X86_ASM_AVAILABLE) || defined(CRYPTOPP_X32_ASM_AVAILABLE) || defined(CRYPTOPP_GENERATE_X64_MASM))
 
 static void CRYPTOPP_FASTCALL X86_SHA256_HashBlocks(word32 *state, const word32 *data, size_t len
 #if defined(_MSC_VER) && (_MSC_VER == 1200)
diff --git a/sha.h b/sha.h
index 7c145115..86151cc2 100644
--- a/sha.h
+++ b/sha.h
@@ -11,6 +11,7 @@
 #include "iterhash.h"
 
 // Clang 3.3 integrated assembler crash on Linux
+//  http://github.com/weidai11/cryptopp/issues/264
 #if defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION < 30400)
 # define CRYPTOPP_DISABLE_SHA_ASM
 #endif
diff --git a/tiger.cpp b/tiger.cpp
index fc62be7d..d7261f92 100644
--- a/tiger.cpp
+++ b/tiger.cpp
@@ -7,6 +7,13 @@
 #include "misc.h"
 #include "cpu.h"
 
+#if defined(CRYPTOPP_DISABLE_TIGER_ASM)
+# undef CRYPTOPP_X86_ASM_AVAILABLE
+# undef CRYPTOPP_X32_ASM_AVAILABLE
+# undef CRYPTOPP_X64_ASM_AVAILABLE
+# undef CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+#endif
+
 NAMESPACE_BEGIN(CryptoPP)
 
 void Tiger::InitState(HashWordType *state)
diff --git a/tiger.h b/tiger.h
index 395d7805..71e5964b 100644
--- a/tiger.h
+++ b/tiger.h
@@ -4,6 +4,12 @@
 #include "config.h"
 #include "iterhash.h"
 
+// Clang 3.3 integrated assembler crash on Linux
+//  http://github.com/weidai11/cryptopp/issues/264
+#if defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION < 30400)
+# define CRYPTOPP_DISABLE_TIGER_ASM
+#endif
+
 NAMESPACE_BEGIN(CryptoPP)
 
 /// <a href="http://www.cryptolounge.org/wiki/Tiger">Tiger</a>
diff --git a/vmac.cpp b/vmac.cpp
index a6662f21..d482cc7c 100644
--- a/vmac.cpp
+++ b/vmac.cpp
@@ -9,6 +9,13 @@
 #include "argnames.h"
 #include "secblock.h"
 
+#if defined(CRYPTOPP_DISABLE_VMAC_ASM)
+# undef CRYPTOPP_X86_ASM_AVAILABLE
+# undef CRYPTOPP_X32_ASM_AVAILABLE
+# undef CRYPTOPP_X64_ASM_AVAILABLE
+# undef CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+#endif
+
 #if CRYPTOPP_MSC_VERSION
 # pragma warning(disable: 4731)
 #endif
@@ -154,13 +161,13 @@ void VMAC_Base::HashEndianCorrectedBlock(const word64 *data)
 unsigned int VMAC_Base::OptimalDataAlignment() const
 {
 	return
-#if (CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)) && !defined(CRYPTOPP_DISABLE_VMAC_ASM)
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
 		HasSSE2() ? 16 :
 #endif
 		GetCipher().OptimalDataAlignment();
 }
 
-#if (CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && (CRYPTOPP_BOOL_X86 || (CRYPTOPP_BOOL_X32 && !defined(CRYPTOPP_DISABLE_VMAC_ASM))))
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32)
 #if CRYPTOPP_MSC_VERSION
 # pragma warning(disable: 4731)	// frame pointer register 'ebp' modified by inline assembly code
 #endif
@@ -798,7 +805,7 @@ void VMAC_Base::VHASH_Update_Template(const word64 *data, size_t blocksRemaining
 
 inline void VMAC_Base::VHASH_Update(const word64 *data, size_t blocksRemainingInWord64)
 {
-#if (CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && (CRYPTOPP_BOOL_X86 || (CRYPTOPP_BOOL_X32 && !defined(CRYPTOPP_DISABLE_VMAC_ASM))))
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32)
 	if (HasSSE2())
 	{
 		VHASH_Update_SSE2(data, blocksRemainingInWord64, 0);
diff --git a/vmac.h b/vmac.h
index bae39971..0723b1c4 100644
--- a/vmac.h
+++ b/vmac.h
@@ -10,7 +10,9 @@
 #include "iterhash.h"
 #include "seckey.h"
 
-#if CRYPTOPP_BOOL_X32
+// Clang 3.3 integrated assembler crash on Linux
+//  http://github.com/weidai11/cryptopp/issues/264
+#if (defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION < 30400)) || CRYPTOPP_BOOL_X32
 # define CRYPTOPP_DISABLE_VMAC_ASM
 #endif