Prevent XML_UNICODE being redefined

diff --git a/expat/lib/expat_external.h b/expat/lib/expat_external.h
index 055be1b328199edd05933a6b4237637d4ab26d74..bf99303cef8e963a3efed1f273c531b77276dfc6 100644 (file)
--- a/expat/lib/expat_external.h
+++ b/expat/lib/expat_external.h
@@ -121,7 +121,9 @@ extern "C" {
 #endif
 
 #ifdef XML_UNICODE_WCHAR_T
-# define XML_UNICODE
+# ifndef XML_UNICODE
+#   define XML_UNICODE
+# endif
 # if defined(__SIZEOF_WCHAR_T__) && (__SIZEOF_WCHAR_T__ != 2)
 #  error "sizeof(wchar_t) != 2; Need -fshort-wchar for both Expat and libc"
 # endif