d/README.Debian Add minimal documentation for the error message

diff --git a/debian/dcmtk.README.Debian b/debian/dcmtk.README.Debian
index d0113f0d2d0f82c286d1d6e7868950c7fb342a08..96859ec7d768ae3db02946df1489745c30b31004 100644 (file)
--- a/debian/dcmtk.README.Debian
+++ b/debian/dcmtk.README.Debian
@@ -147,4 +147,20 @@ and
 
    http://forum.dcmtk.org/
 
- -- Mathieu Malaterre <malat@debian.org>  Wed, 15 May 2013 10:34:58 +0200
+---
+
+DCMTK on Debian is either build using ICU or stdlibc (iconv) to support
+CharacterSet in DICOM. However full support for CharacterSet is only
+implemented in libiconv. Since Debian does not ship libiconv, user may get the
+following error message for the non-supported CharacterSet (ISO 2022 IR 87 in
+this case):
+
+E: DcmSpecificCharacterSet: 'ISO 2022 IR 87' is not supported by the utilized
+  character set conversion library 'ICU, Version 63.1.0'
+
+or
+
+E: DcmSpecificCharacterSet: 'ISO 2022 IR 87' is not supported by the utilized
+  character set conversion library 'GNU C library (iconv), version 2.28'
+
+ -- Mathieu Malaterre <malat@debian.org>  Thu, 20 May 2021 11:36:10 +0200