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>

4 files changed, 103 insertions, 0 deletions

diff --git a/tests/auto/blackbox/testdata/linker-module-definition/linker-module-definition.qbs b/tests/auto/blackbox/testdata/linker-module-definition/linker-module-definition.qbs
new file mode 100644
index 000000000..519b6e065
--- /dev/null
+++ b/tests/auto/blackbox/testdata/linker-module-definition/linker-module-definition.qbs
@@ -0,0 +1,20 @@
+import qbs
+
+Project {
+    condition: {
+        var result = qbs.targetPlatform === qbs.hostPlatform;
+        if (!result)
+            console.info("targetPlatform differs from hostPlatform");
+        return result;
+    }
+    DynamicLibrary {
+        name: "testlib"
+        Depends { name: "cpp"}
+        files: ["testlib.cpp", "testlib.def"]
+    }
+    CppApplication {
+        name: "testapp"
+        Depends { name: "testlib"}
+        files: ["testapp.cpp"]
+    }
+}
diff --git a/tests/auto/blackbox/testdata/linker-module-definition/testapp.cpp b/tests/auto/blackbox/testdata/linker-module-definition/testapp.cpp
new file mode 100644
index 000000000..7cb5ee901
--- /dev/null
+++ b/tests/auto/blackbox/testdata/linker-module-definition/testapp.cpp
@@ -0,0 +1,39 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 Denis Shienkov <denis.shienkov@gmail.com>
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qbs.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms and
+** conditions see http://www.qt.io/terms-conditions. For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+extern void foo();
+extern void bar();
+
+int main()
+{
+    foo();
+    bar();
+    return 0;
+}
diff --git a/tests/auto/blackbox/testdata/linker-module-definition/testlib.cpp b/tests/auto/blackbox/testdata/linker-module-definition/testlib.cpp
new file mode 100644
index 000000000..d1cfc253a
--- /dev/null
+++ b/tests/auto/blackbox/testdata/linker-module-definition/testlib.cpp
@@ -0,0 +1,41 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 Denis Shienkov <denis.shienkov@gmail.com>
+** Contact: http://www.qt.io/licensing
+**
+** This file is part of Qbs.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms and
+** conditions see http://www.qt.io/terms-conditions. For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include <cstdio>
+
+void foo()
+{
+    printf("foo\n");
+}
+
+void bar()
+{
+    printf("bar\n");
+}
diff --git a/tests/auto/blackbox/testdata/linker-module-definition/testlib.def b/tests/auto/blackbox/testdata/linker-module-definition/testlib.def
new file mode 100644
index 000000000..36967ddd5
--- /dev/null
+++ b/tests/auto/blackbox/testdata/linker-module-definition/testlib.def
@@ -0,0 +1,3 @@
+EXPORTS
+foo
+bar