Doc: Mention exact Qt version the third party attributions apply to

We do add, remove or update third party code in minor releases,
sometimes even in patch level releases. However, the documentation is
supposed to be valid for all existing Qt 5 versions, but doing this for
attributions would require infrastructure we don't have.

Therefore rather make it explicit which Qt version the attributions
apply to. Also mention since when Qt is available under LGPLv3
(starting with Qt 5.4).

Task-number: QTBUG-65665
Change-Id: I328b5bf0c143f78ea61aad51f0644c3cbb6dee49
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/corelib/doc/src/qtcore-index.qdoc b/src/corelib/doc/src/qtcore-index.qdoc
index 9004c018ed..04af0e9416 100644
--- a/src/corelib/doc/src/qtcore-index.qdoc
+++ b/src/corelib/doc/src/qtcore-index.qdoc
@@ -104,17 +104,18 @@
     \section1 Licenses and Attributions
 
     Qt Core is available under commercial licenses from \l{The Qt Company}.
-    In addition, it is available under the
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
     \l{GNU Lesser General Public License, version 3}, or
     the \l{GNU General Public License, version 2}.
     See \l{Qt Licensing} for further details.
 
     Executables on Windows potentially link
     against \l{The qtmain Library}. This library is available
-    under commercial licenses, and in addition under the
+    under commercial licenses and also under the
     \l{BSD 3-clause "New" or "Revised" License}.
 
-    Furthermore Qt Core potentially contains third party
+    Furthermore, Qt Core in Qt \QtVersion may contain third party
     modules under following permissive licenses:
 
     \generatelist{groupsbymodule attributions-qtcore}