cmake: Set APR_IS_BIGENDIAN based on CMAKE_C_BYTE_ORDER.

git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@1934390 13f79535-47bb-0310-9956-ffa450edef68

Author: Ivan Zhakov

CMakeLists.txt

@@ -120,6 +120,14 @@ if(APR_HAS_LDAP)
   set(LDAP_LIBRARIES wldap32)
 endif()
 
+if (CMAKE_C_BYTE_ORDER STREQUAL "BIG_ENDIAN")
+  set(APR_IS_BIGENDIAN 1)
+elseif (CMAKE_C_BYTE_ORDER STREQUAL "LITTLE_ENDIAN")
+  set(APR_IS_BIGENDIAN 0)
+else ()
+  message(FATAL_ERROR "Endianness could not be determined.")
+endif ()
+
 if(APR_POOL_DEBUG)
   add_compile_definitions(APR_POOL_DEBUG=1)
 endif()

include/apr.hwc

@@ -393,9 +393,7 @@ typedef  apr_uint32_t            apr_uintptr_t;
 typedef  apr_int32_t             apr_intptr_t;
 #endif
 
-/* Are we big endian? */
-/* XXX: Fatal assumption on Alpha platforms */
-#define APR_IS_BIGENDIAN        0
+#cmakedefine01 APR_IS_BIGENDIAN
 
 /* Mechanisms to properly type numeric literals */