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-rw-r--r--block-sha1/sha1.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block-sha1/sha1.c b/block-sha1/sha1.c
index d31f2e386c..92d9121602 100644
--- a/block-sha1/sha1.c
+++ b/block-sha1/sha1.c
@@ -9,7 +9,7 @@
#include "sha1.h"
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
/*
* Force usage of rol or ror by selecting the one with the smaller constant.
@@ -54,7 +54,7 @@
#if defined(__i386__) || defined(__x86_64__)
#define setW(x, val) (*(volatile unsigned int *)&W(x) = (val))
-#elif defined(__arm__)
+#elif defined(__GNUC__) && defined(__arm__)
#define setW(x, val) do { W(x) = (val); __asm__("":::"memory"); } while (0)
#else
#define setW(x, val) (W(x) = (val))