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Diffstat (limited to 'ext/x64-salsa2012-asm/salsa2012.h')
-rw-r--r--ext/x64-salsa2012-asm/salsa2012.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/ext/x64-salsa2012-asm/salsa2012.h b/ext/x64-salsa2012-asm/salsa2012.h
index d8c2e48c..73e375eb 100644
--- a/ext/x64-salsa2012-asm/salsa2012.h
+++ b/ext/x64-salsa2012-asm/salsa2012.h
@@ -1,3 +1,6 @@
+#ifndef ZT_X64_SALSA2012_ASM
+#define ZT_X64_SALSA2012_ASM
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -9,3 +12,5 @@ extern int zt_salsa2012_amd64_xmm6(unsigned char *, unsigned long long, const un
#ifdef __cplusplus
}
#endif
+
+#endif