Msvc: Handle windows module definition file

Module-definition (.def) file provide the linker with information about
exports, attributes, and other information about the program to be linked.

This file can be used instead of e.g. __declspec(dllexport) keywords
inside of a header files to export an appropriate symbols:

 * https://docs.microsoft.com/en-us/cpp/build/reference/module-definition-dot-def-files?view=vs-2019
 * https://docs.microsoft.com/en-us/cpp/build/reference/def-specify-module-definition-file?view=vs-2019

To make it supported, we have created the additional 'def' file tag,
and now we can add the required module-definition file to the
{Product|Group}'s 'files' property.

Fixes: QBS-571
Change-Id: I831d2e1b8f9f061a4414a5eaac85b71584f48c5d
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 8 insertions, 0 deletions

diff --git a/doc/reference/modules/cpp-module.qdoc b/doc/reference/modules/cpp-module.qdoc
index ff8c0172e..3c1744e09 100644
--- a/doc/reference/modules/cpp-module.qdoc
+++ b/doc/reference/modules/cpp-module.qdoc
@@ -144,6 +144,14 @@
             and Objective-C++, respectively. There can be only one such file per product and
             language.
     \row
+        \li \c{"def"}
+        \li -
+        \li 1.17.0
+        \li This tag is used for a module-definition file (.def) to be passed to the linker.
+            Such a file provides the linker with information about exports, attributes,
+            and other information about the program to be linked. This file tag only has
+            an effect with the MSVC toolchain.
+    \row
         \li \c{"dynamiclibrary"}
         \li n/a
         \li 1.0.1