icu-68 disable TRUE/FALSE by default.
--- a/cbits/text_icu.c
+++ b/cbits/text_icu.c
@@ -305,7 +305,7 @@ int32_t __hs_u_strFoldCase(UChar *dest, int32_t destCapacity,
 
 int32_t __hs_u_strCompareIter(UCharIterator *iter1, UCharIterator *iter2)
 {
-    return u_strCompareIter(iter1, iter2, TRUE);
+    return u_strCompareIter(iter1, iter2, true);
 }
 
 UBlockCode __hs_ublock_getCode(UChar32 c)