doc: update Qt 5 references from README

This change updates all the references we had in the README files
pointing to Qt5, PySide2, and old URLs.

Pick-to: 6.0
Change-Id: I9512522418df0c3996031333180e18aef03057ed
Reviewed-by: Friedemann Kleint <[email protected]>

Author: cmaureir

README.md

@@ -77,15 +77,15 @@ e.g.:
 
 * First, we create a bdist_wheel from a full PySide6 build:
   ```
-  python setup.py bdist_wheel --qmake=c:\Qt\5.12\bin\qmake.exe
+  python setup.py bdist_wheel --qmake=c:\Qt\6.0\bin\qmake.exe
         --cmake=c:\tools\cmake\bin\cmake.exe
         --openssl=c:\libs\OpenSSL32bit\bin
   ```
 * Then, we create a bdist_egg reusing the PySide6 build with option
   `--only-package`:
   ```
   python setup.py bdist_egg --only-package
-        --qmake=c:\Qt\5.15\bin\qmake.exe
+        --qmake=c:\Qt\6.0\bin\qmake.exe
         --cmake=c:\tools\cmake\bin\cmake.exe
         --openssl=c:\libs\OpenSSL32bit\bin
   ```
@@ -137,10 +137,10 @@ using `setup.py build`:
 
 ## Requirements
 
- * Python 3.6+ are supported,
+ * Python 3.6+ is supported,
  * CMake: Specify the path to cmake with `--cmake` option or add cmake to the
    system path.
- * Qt 5.12+ is supported. Specify the path to qmake with `--qmake` option or
+ * Qt 6.0+ is supported. Specify the path to qmake with `--qmake` option or
    add qmake to the system path.
 
 ### Optional
@@ -152,7 +152,7 @@ platforms.
 
 Please note that official Windows packages do not ship the OpenSSL libraries
 due to import/export restrictions as described in
-http://doc.qt.io/qt-5/ssl.html#import-and-export-restrictions
+http://doc.qt.io/qt-6/ssl.html#import-and-export-restrictions
 
 You can specify the location of the OpenSSL DLLs with the following option:
 `--openssl=</path/to/openssl/bin-directory>`.

README.pyside6.md

@@ -2,9 +2,11 @@
 
 ### Introduction
 
+**Important:** for Qt5 compatibility, check [PySide2](https://pypi.org/project/PySide2)
+
 PySide6 is the official Python module from the
 [Qt for Python project](http://wiki.qt.io/Qt_for_Python),
-which provides access to the complete Qt 5.12+ framework.
+which provides access to the complete Qt 6.0+ framework.
 
 The Qt for Python project is developed in the open, with all facilities you'd expect
 from any modern OSS project such as all code in a git repository and an open
@@ -23,8 +25,8 @@ pip install PySide6
 
 #### Dependencies
 
-PySide6 versions following 5.12 use a C++ parser based on
-[Clang](http://clang.org/). The Clang library (C-bindings), version 6.0 or
+PySide6 versions following 6.0 use a C++ parser based on
+[Clang](http://clang.org/). The Clang library (C-bindings), version 10.0 or
 higher is required for building. Prebuilt versions of it can be downloaded from
 [download.qt.io](http://download.qt.io/development_releases/prebuilt/libclang/).
 
@@ -46,21 +48,20 @@ SET LLVM_INSTALL_DIR=%CD%\libclang
 ### Building from source
 
 For building PySide6 from scratch, please read about
-[getting started](https://wiki.qt.io/Qt_for_Python/GettingStarted).
+[getting started](https://doc.qt.io/qtforpython/gettingstarted.html).
 This process will include getting the code:
 
 ```
 git clone https://code.qt.io/pyside/pyside-setup
 cd pyside-setup
-git branch --track 5.14 origin/5.15
-git checkout 5.15
+git checkout 6.x # if a specific version is needed
 ```
 
 then install the dependencies, and following the instructions per platform.
 A common build command will look like:
 
 ```
-python setup.py install --qmake=path/to/qmake/ --parallel=8 --build-tests
+python setup.py install --qmake=/path/to/bin/qmake --parallel=8 --build-tests
 ```
 
 You can obtain more information about the options to build PySide and Shiboken

README.shiboken6.md

@@ -1,6 +1,6 @@
 # Shiboken6 module
 
-The purpose of the [shiboken6 Python module](https://wiki.qt.io/Qt_for_Python/Shiboken)
+The purpose of the **shiboken6 Python module**
 is to access information related to the binding generation that could be used to integrate
 C++ programs to Python, or even to get useful information to debug
 an application.