Implement proper package versioning

This change is inspired by / follows PEP 440 for handling version
numbers and also takes into account the Qt versioning scheme.

PySide2 as package name will stay as-is (not renamed to PySide5).

Release versions would have the following pattern:
PySide2 5.x.y (e.g. 5.6.3)

Package (wheel) name would also contain the bundled Qt version, e.g.:
PySide2-5.6.0-5.6.4-cp27-cp27m-macosx_10_7_intel.whl

Pre-release versions would look like:
PySide2 5.6.0a1, 5.6.0a2, 5.6.0b1, 5.6.0b2, 5.6.0rc1, etc.

Development (snapshot) versions would look like:
PySide2 5.6.0-dev123456789 (last part is timestamp of build time)

All of the examples above comply with the PEP 440 rules.

In the example above where the Qt version is specified as part of the
wheel package name ("5.6.4"), the Qt version is not part of the
package version itself, because it doesn't comply with PEP 440.

But it does comply with wheel package names (PEP 427), and by that
PEP's definitions, it will be the optional "build tag" part of the
file name, which is preceded by the actual package version, and
followed by the python version / abi tag.

Implementation:
This change defines two new python configuration files which will be
the authoritative source for the shiboken and PySide2 libraries, as
well as the final PySide2 package itself:
sources/shiboken/shiboken_version.py
sources/pyside2/pyside_version.py

The pyside_version.py file will be the source of the final package
version.

The shiboken and PySide2 version should be modified in sync, when
bumping the version of the package before a release.

The reason for having both files instead of 1, is to make life easier
for developers that might extract only shiboken from the repository.
If at some point shiboken and PySide2 CMake projects get merged into
one project, the duplicate version files would go away.

The version files are parsed by CMake to correctly name the shared
libraries (and SO versions), and they are also read by the setup.py
script, to generate correct package metadata and a correct package
(wheel) name.

This change also removes the broken dist targets from PySide2's and
shiboken's CMakelists files, which depended on some version suffix
which was never set in setup.py.

PEP440: https://www.python.org/dev/peps/pep-0440/
PEP427: https://www.python.org/dev/peps/pep-0427/

Change-Id: I3226460b1adf2555c8711fa2ba47c223b957cb44
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/sources/shiboken2/shiboken_version.py b/sources/shiboken2/shiboken_version.py
new file mode 100644
index 000000000..b207d6b9c
--- /dev/null
+++ b/sources/shiboken2/shiboken_version.py
@@ -0,0 +1,10 @@
+major_version = "5"
+minor_version = "6"
+patch_version = "0"
+pre_release_version_type = "a" # e.g. "a", "b", "rc".
+pre_release_version = "1" # e.g "1", "2", (which means "beta1", "beta2", if type is "b")
+
+if __name__ == '__main__':
+    # Used by CMake.
+    print('{0};{1};{2};{3};{4}'.format(major_version, minor_version, patch_version,
+                                       pre_release_version_type, pre_release_version))