X-Git-Url: http://git.annexia.org/?p=portablexdr.git;a=blobdiff_plain;f=byteswap.h;h=991e85b084b3d0d445d7e60cbad6b8e700bebdd7;hp=3509acf4638bb4e6f1a85aefb170338406c0abef;hb=6b839b35324dc93ee2e032c2beaa16dbf1e629b5;hpb=f0ecda34fc6ad92793cf9d1e7fa3c5aa9165f9d0

diff --git a/byteswap.h b/byteswap.h
index 3509acf..991e85b 100644
--- a/byteswap.h
+++ b/byteswap.h
@@ -20,6 +20,10 @@
 #ifndef _PORTABLEXDR_BYTESWAP_H
 #define _PORTABLEXDR_BYTESWAP_H 1
 
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
 /* Swap bytes in 16 bit value.  */
 #define __bswap_constant_16(x) \
      ((((x) >> 8) & 0xffu) | (((x) & 0xffu) << 8))
@@ -107,6 +111,7 @@ static inline uint32_t
 htonl (x)
      uint32_t x;
 {
+#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
 #if BYTE_ORDER == BIG_ENDIAN
   return x;
 #elif BYTE_ORDER == LITTLE_ENDIAN
@@ -114,6 +119,9 @@ htonl (x)
 #else
 # error "What kind of system is this?"
 #endif
+#else
+#error "BYTE_ORDER/BIG_ENDIAN/LITTLE_ENDIAN are not defined"
+#endif
 }
 
 #define ntohl htonl
@@ -147,6 +155,7 @@ static inline uint16_t
 htons (x)
      uint16_t x;
 {
+#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN)
 #if BYTE_ORDER == BIG_ENDIAN
   return x;
 #elif BYTE_ORDER == LITTLE_ENDIAN
@@ -154,6 +163,9 @@ htons (x)
 #else
 # error "What kind of system is this?"
 #endif
+#else
+#error "BYTE_ORDER/BIG_ENDIAN/LITTLE_ENDIAN are not defined"
+#endif
 }
 
 #define ntohs htons