ICU-8452 update the readme with the new location of the U_CHARSET_IS_UTF8 definition

X-SVN-Rev: 30419

diff --git a/icu4c/readme.html b/icu4c/readme.html
index 5fa13f0a5a3c57b0c237dfca1e18f065c3cb6c79..56c27baa1d6e7722412def11d8567f06474416fe 100644 (file)
--- a/icu4c/readme.html
+++ b/icu4c/readme.html
@@ -571,7 +571,9 @@
         and statically linked ICU libraries become smaller.
         (See the <a href="http://icu-project.org/apiref/icu4c/utypes_8h.html#0a33e1edf3cd23d9e9c972b63c9f7943">U_CHARSET_IS_UTF8</a>
         API documentation for more details.)<br>
-        You can <code>-DU_CHARSET_IS_UTF8=1</code> or modify unicode/utypes.h:
+        You can <code>-DU_CHARSET_IS_UTF8=1</code> or
+        modify unicode/utypes.h (in ICU 4.8 and below)
+        or modify unicode/platform.h (in ICU 49 and higher):
 <pre>Index: source/common/unicode/utypes.h
 ===================================================================
 --- source/common/unicode/utypes.h      (revision 26606)