Protect the _PLATFORM_ARCH* defines.

Signed-off-by: George Bosilca <[email protected]>

Author: bosilca

opal/include/opal/opal_portable_platform_real.h

@@ -1053,9 +1053,9 @@
 #elif defined(__LITTLE_ENDIAN__) || defined(WORDS_LITTLEENDIAN) || \
     ( __BYTE_ORDER__ > 0 && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ )
   #define PLATFORM_ARCH_LITTLE_ENDIAN 1
-#elif _PLATFORM_ARCH_BIG_ENDIAN
+#elif defined(_PLATFORM_ARCH_BIG_ENDIAN)
   #define PLATFORM_ARCH_BIG_ENDIAN 1
-#elif _PLATFORM_ARCH_LITTLE_ENDIAN
+#elif defined(_PLATFORM_ARCH_LITTLE_ENDIAN)
   #define PLATFORM_ARCH_LITTLE_ENDIAN 1
 #endif
 #undef _PLATFORM_ARCH_BIG_ENDIAN
@@ -1086,9 +1086,9 @@
       defined(__arch32__) || defined(__32BIT__) || \
       __INTPTR_MAX__ == 2147483647
   #define PLATFORM_ARCH_32 1
-#elif _PLATFORM_ARCH_64
+#elif defined(_PLATFORM_ARCH_64)
   #define PLATFORM_ARCH_64 1
-#elif _PLATFORM_ARCH_32
+#elif defined(_PLATFORM_ARCH_32)
   #define PLATFORM_ARCH_32 1
 #endif
 #undef _PLATFORM_ARCH_64