Generalize the winmain/qtmain entry-point library

The use-case is relevant for other platforms as well.

Now that Qt has a module system we can also replace a lot of the
hand crafted logic for linking with simpler constructs.

Change-Id: Ib6853aaf81bfea79c31f2de741d65b4b56f23ef6
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

3 files changed, 0 insertions, 168 deletions

diff --git a/src/winmain/CMakeLists.txt b/src/winmain/CMakeLists.txt
deleted file mode 100644
index 3f3e6f0f1c..0000000000
--- a/src/winmain/CMakeLists.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-# special case begin
-# special case skip regeneration
-if (NOT WIN32)
-    return()
-endif()
-
-qt_internal_add_module(WinMain
-  STATIC
-  NO_SYNC_QT
-  NO_MODULE_HEADERS
-  DEFINES
-      QT_NO_FOREACH
-  INCLUDE_DIRECTORIES
-      $<TARGET_PROPERTY:Qt::Core,INTERFACE_INCLUDE_DIRECTORIES>
-)
-
-if (MSVC)
-    # Store debug information inside the static lib
-    qt_internal_replace_compiler_flags(
-        "/Zi" "/Z7"
-        CONFIGS DEBUG RELWITHDEBINFO
-        IN_CURRENT_SCOPE)
-endif()
-
-set_property(TARGET WinMain PROPERTY OUTPUT_NAME qtmain)
-
-qt_internal_extend_target(WinMain CONDITION
-    SOURCES qtmain_win.cpp
-    LIBRARIES shell32
-)
-
-qt_internal_extend_target(WinMain CONDITION MINGW
-    DEFINES QT_NEEDS_QMAIN
-)
-# special case end
diff --git a/src/winmain/qtmain_win.cpp b/src/winmain/qtmain_win.cpp
deleted file mode 100644
index 5520a447a9..0000000000
--- a/src/winmain/qtmain_win.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2019 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the Windows main function of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** 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.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <windows.h>
-#include <shellapi.h>
-
-/*
-  This file contains the code in the qtmain library for Windows.
-  qtmain contains the Windows startup code and is required for
-  linking to the Qt DLL.
-
-  When a Windows application starts, the WinMain function is
-  invoked.
-*/
-
-#if defined(QT_NEEDS_QMAIN)
-int qMain(int, char **);
-#define main qMain
-#else
-extern "C" int main(int, char **);
-#endif
-
-/*
-  WinMain() - Initializes Windows and calls user's startup function main().
-  NOTE: WinMain() won't be called if the application was linked as a "console"
-  application.
-*/
-
-// Convert a wchar_t to char string, equivalent to QString::toLocal8Bit()
-// when passed CP_ACP.
-static inline char *wideToMulti(unsigned int codePage, const wchar_t *aw)
-{
-    const int required = WideCharToMultiByte(codePage, 0, aw, -1, nullptr, 0, nullptr, nullptr);
-    char *result = new char[required];
-    WideCharToMultiByte(codePage, 0, aw, -1, result, required, nullptr, nullptr);
-    return result;
-}
-
-extern "C" int APIENTRY WinMain(HINSTANCE, HINSTANCE, LPSTR /*cmdParamarg*/, int /* cmdShow */)
-{
-    int argc = 0;
-    wchar_t **argvW = CommandLineToArgvW(GetCommandLineW(), &argc);
-    if (argvW == nullptr)
-        return -1;
-    char **argv = new char *[argc + 1];
-    for (int i = 0; i != argc; ++i)
-        argv[i] = wideToMulti(CP_ACP, argvW[i]);
-    argv[argc] = nullptr;
-    LocalFree(argvW);
-    const int exitCode = main(argc, argv);
-    for (int i = 0; (i != argc) && (argv[i] != nullptr); ++i)
-        delete [] argv[i];
-    delete [] argv;
-    return exitCode;
-}
diff --git a/src/winmain/winmain.pro b/src/winmain/winmain.pro
deleted file mode 100644
index 19ce9ffa82..0000000000
--- a/src/winmain/winmain.pro
+++ /dev/null
@@ -1,31 +0,0 @@
-# Additional Qt project file for qtmain lib on Windows
-!win32:error("$$_FILE_ is intended only for Windows!")
-
-TEMPLATE = lib
-TARGET = qtmain
-DESTDIR = $$QT.core.libs
-
-CONFIG += static
-QT = core
-
-DEFINES += QT_NO_FOREACH
-
-qtConfig(debug_and_release): CONFIG += build_all
-
-msvc: QMAKE_CFLAGS_DEBUG -= -Zi
-msvc: QMAKE_CXXFLAGS_DEBUG -= -Zi
-msvc: QMAKE_CFLAGS_DEBUG *= -Z7
-msvc: QMAKE_CXXFLAGS_DEBUG *= -Z7
-mingw: DEFINES += QT_NEEDS_QMAIN
-
-CONFIG -= qt
-SOURCES = qtmain_win.cpp
-QMAKE_USE_PRIVATE += shell32
-
-load(qt_installs)
-
-TARGET = $$qtLibraryTarget($$TARGET$$QT_LIBINFIX) #do this towards the end
-
-load(qt_targets)
-load(qt_build_paths)
-load(qt_common)