1 files changed, 8 insertions, 4 deletions
diff --git a/ppc_simd.h b/ppc_simd.h
index 52056053..65008066 100644
--- a/ppc_simd.h
+++ b/ppc_simd.h
@@ -121,16 +121,20 @@
 // provide an option to set it. We have to set it
 // for the code below. This define must stay in
 // sync with the define in test_ppc_power7.cxx.
-#if defined(_AIX) && defined(_ARCH_PWR7) && defined(__xlC__)
-# define __VSX__ 1
+#ifndef CRYPTOPP_DISABLE_POWER7
+# if defined(_AIX) && defined(_ARCH_PWR7) && defined(__xlC__)
+#  define __VSX__ 1
+# endif
 #endif
 
 // XL C++ on AIX does not define CRYPTO and does not
 // provide an option to set it. We have to set it
 // for the code below. This define must stay in
 // sync with the define in test_ppc_power8.cxx
-#if defined(_AIX) && defined(_ARCH_PWR8) && defined(__xlC__)
-# define __CRYPTO__ 1
+#ifndef CRYPTOPP_DISABLE_POWER8
+# if defined(_AIX) && defined(_ARCH_PWR8) && defined(__xlC__)
+#  define __CRYPTO__ 1
+# endif
 #endif
 
 /// \brief Cast array to vector pointer