8 files changed, 16 insertions, 0 deletions

diff --git a/xmss_commons.c b/xmss_commons.c
index cf031f883..ff3ddb4ae 100644
--- a/xmss_commons.c
+++ b/xmss_commons.c
@@ -10,7 +10,9 @@ Public domain.
 #include "xmss_commons.h"
 #include <stdlib.h>
 #include <stdio.h>
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 
 void to_byte(unsigned char *out, unsigned long long in, uint32_t bytes)
 {
diff --git a/xmss_commons.h b/xmss_commons.h
index 2cb7cc555..d9a920c02 100644
--- a/xmss_commons.h
+++ b/xmss_commons.h
@@ -8,7 +8,9 @@ Public domain.
 #define XMSS_COMMONS_H
 
 #include <stdlib.h>
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 
 void to_byte(unsigned char *output, unsigned long long in, uint32_t bytes);
 #if 0
diff --git a/xmss_fast.c b/xmss_fast.c
index 6aff36a07..b918f135a 100644
--- a/xmss_fast.c
+++ b/xmss_fast.c
@@ -10,7 +10,9 @@ Public domain.
 #include "xmss_fast.h"
 #include <stdlib.h>
 #include <string.h>
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 
 #include "crypto_api.h"
 #include "xmss_wots.h"
diff --git a/xmss_hash.c b/xmss_hash.c
index 9c42c4f40..c4cac47fd 100644
--- a/xmss_hash.c
+++ b/xmss_hash.c
@@ -12,7 +12,9 @@ Public domain.
 #include "xmss_hash.h"
 
 #include <stddef.h>
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 #include <stdio.h>
 #include <string.h>
 #include <openssl/sha.h>
diff --git a/xmss_hash_address.c b/xmss_hash_address.c
index 385868de7..0ff4fdb5a 100644
--- a/xmss_hash_address.c
+++ b/xmss_hash_address.c
@@ -6,7 +6,9 @@ Public domain.
 */
 #include "includes.h"
 
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 #include "xmss_hash_address.h"  /* prototypes */
 
 void setLayerADRS(uint32_t adrs[8], uint32_t layer){
diff --git a/xmss_hash_address.h b/xmss_hash_address.h
index 73cbfd61c..2bf434080 100644
--- a/xmss_hash_address.h
+++ b/xmss_hash_address.h
@@ -5,7 +5,9 @@ Joost Rijneveld
 Public domain.
 */
 
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 
 void setLayerADRS(uint32_t adrs[8], uint32_t layer);
 
diff --git a/xmss_wots.c b/xmss_wots.c
index 4120acf17..9f1900fcb 100644
--- a/xmss_wots.c
+++ b/xmss_wots.c
@@ -8,7 +8,9 @@ Public domain.
 #include "includes.h"
 
 #include <stdlib.h>
+#ifdef HAVE_STDINT_H
 #include <stdint.h>
+#endif
 #include <limits.h>
 #include "xmss_commons.h"
 #include "xmss_hash.h"
diff --git a/xmss_wots.h b/xmss_wots.h
index 495431087..8bcb44e04 100644
--- a/xmss_wots.h
+++ b/xmss_wots.h
@@ -8,7 +8,9 @@ Public domain.
 #ifndef WOTS_H
 #define WOTS_H
 
+#ifdef HAVE_STDINT_H
 #include "stdint.h"
+#endif
 
 /**
  * WOTS parameter set