Remove target specific flags from the linker capabilities check

Remove target specific flags from static_link_order.
Move the check to the common config.tests folder.

Amends 5fb99e3860eb43f4bacacec7f4a4626cb0159b14

Pick-to: 6.2
Task-number: QTBUG-93002
Task-number: QTBUG-94528
Change-Id: I1368075ec6bd1e743b2b89fd93143df38a278ec2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

5 files changed, 151 insertions, 0 deletions

diff --git a/config.tests/static_link_order/CMakeLists.txt b/config.tests/static_link_order/CMakeLists.txt
new file mode 100644
index 0000000000..36ce10e87c
--- /dev/null
+++ b/config.tests/static_link_order/CMakeLists.txt
@@ -0,0 +1,22 @@
+# The test represents the order-related issue that we have with the ld linker.
+#
+# CMake versions < 3.21.0 produce the following linker line:
+# <binary_name> main.cpp -o static_link_order_test libstaticLib.a objlib.cpp.o
+# Since 'static_link_order_test' doesn't have direct use of 'staticlib2.cpp.o' symbols
+# the translation unit is not linked. When we link objlib.cpp.o it cannot resolve symbols from
+# staticlib2.cpp.o.
+#
+# For now it's only applicable for ld-like linkers. 'lld' has no such issue.
+cmake_minimum_required(VERSION 3.14)
+
+project(static_link_order_test LANGUAGES CXX)
+
+add_library(objLib OBJECT objlib.cpp)
+add_library(staticLib STATIC staticlib1.cpp staticlib2.cpp)
+
+target_link_libraries(staticLib
+    INTERFACE objLib "$<TARGET_OBJECTS:objLib>"
+)
+
+add_executable(static_link_order_test main.cpp)
+target_link_libraries(static_link_order_test PRIVATE staticLib)
diff --git a/config.tests/static_link_order/main.cpp b/config.tests/static_link_order/main.cpp
new file mode 100644
index 0000000000..02f10d1620
--- /dev/null
+++ b/config.tests/static_link_order/main.cpp
@@ -0,0 +1,33 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+void staticLibFunc1();
+
+int main() {
+    staticLibFunc1();
+}
diff --git a/config.tests/static_link_order/objlib.cpp b/config.tests/static_link_order/objlib.cpp
new file mode 100644
index 0000000000..c3889e04d7
--- /dev/null
+++ b/config.tests/static_link_order/objlib.cpp
@@ -0,0 +1,33 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+void staticLibFunc2();
+
+void objLibFunc() {
+    staticLibFunc2();
+}
diff --git a/config.tests/static_link_order/staticlib1.cpp b/config.tests/static_link_order/staticlib1.cpp
new file mode 100644
index 0000000000..b2e933e510
--- /dev/null
+++ b/config.tests/static_link_order/staticlib1.cpp
@@ -0,0 +1,33 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+void objLibFunc();
+
+void staticLibFunc1() {
+    objLibFunc();
+}
diff --git a/config.tests/static_link_order/staticlib2.cpp b/config.tests/static_link_order/staticlib2.cpp
new file mode 100644
index 0000000000..7e84289797
--- /dev/null
+++ b/config.tests/static_link_order/staticlib2.cpp
@@ -0,0 +1,30 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+void staticLibFunc2() {
+}