python: expose the BUILD_DEPRECATED constants as well.

Ugh, I thought I would never need them but then there are plugin
features depending on this and it's A MESS.

doc/python/conf.py

@@ -24,13 +24,14 @@ import magnum.trade
 
 # So the doc see everything
 # TODO: use just +=, m.css should reorder this on its own
-corrade.__all__ = ['containers', 'pluginmanager', 'BUILD_STATIC', 'BUILD_MULTITHREADED', 'TARGET_UNIX', 'TARGET_APPLE', 'TARGET_IOS', 'TARGET_IOS_SIMULATOR', 'TARGET_WINDOWS', 'TARGET_WINDOWS_RT', 'TARGET_EMSCRIPTEN', 'TARGET_ANDROID']
+corrade.__all__ = ['containers', 'pluginmanager', 'BUILD_DEPRECATED', 'BUILD_STATIC', 'BUILD_MULTITHREADED', 'TARGET_UNIX', 'TARGET_APPLE', 'TARGET_IOS', 'TARGET_IOS_SIMULATOR', 'TARGET_WINDOWS', 'TARGET_WINDOWS_RT', 'TARGET_EMSCRIPTEN', 'TARGET_ANDROID']
-magnum.__all__ = ['math', 'gl', 'meshtools', 'platform', 'primitives', 'shaders', 'scenegraph', 'text', 'trade', 'BUILD_STATIC', 'TARGET_GL', 'TARGET_GLES', 'TARGET_GLES2', 'TARGET_WEBGL', 'TARGET_EGL', 'TARGET_VK'] + magnum.__all__
+magnum.__all__ = ['math', 'gl', 'meshtools', 'platform', 'primitives', 'shaders', 'scenegraph', 'text', 'trade', 'BUILD_DEPRECATED', 'BUILD_STATIC', 'TARGET_GL', 'TARGET_GLES', 'TARGET_GLES2', 'TARGET_WEBGL', 'TARGET_EGL', 'TARGET_VK'] + magnum.__all__
 
 # hide values of the preprocessor defines to avoid confusion by assigning a
 # class without __repr__ to them
 # TODO: more systematic solution directly in m.css
 class DoNotPrintValue: pass
+corrade.BUILD_DEPRECATED = DoNotPrintValue()
 corrade.BUILD_STATIC = DoNotPrintValue()
 corrade.BUILD_MULTITHREADED = DoNotPrintValue()
 corrade.TARGET_UNIX = DoNotPrintValue()
@@ -41,6 +42,7 @@ corrade.TARGET_WINDOWS = DoNotPrintValue()
 corrade.TARGET_WINDOWS_RT = DoNotPrintValue()
 corrade.TARGET_EMSCRIPTEN = DoNotPrintValue()
 corrade.TARGET_ANDROID = DoNotPrintValue()
+magnum.BUILD_DEPRECATED = DoNotPrintValue()
 magnum.BUILD_STATIC = DoNotPrintValue()
 magnum.TARGET_GL = DoNotPrintValue()
 magnum.TARGET_GLES = DoNotPrintValue()
@@ -51,6 +53,7 @@ magnum.TARGET_VK = DoNotPrintValue()
 
 # TODO ugh... can this be expressed directly in pybind?
 corrade.__annotations__ = {
+    'BUILD_DEPRECATED': bool,
     'BUILD_STATIC': bool,
     'BUILD_MULTITHREADED': bool,
     'TARGET_UNIX': bool,
@@ -63,6 +66,7 @@ corrade.__annotations__ = {
     'TARGET_ANDROID': bool
 }
 magnum.__annotations__ = {
+    'BUILD_DEPRECATED': bool,
     'BUILD_STATIC': bool,
     'TARGET_GL': bool,
     'TARGET_GLES': bool,

doc/python/corrade.rst

@@ -36,6 +36,7 @@
     >>> from corrade import *
 
 .. py:module:: corrade
+    :data BUILD_DEPRECATED: Build with deprecated features enabled
     :data BUILD_STATIC: Static library build
     :data BUILD_MULTITHREADED: Multi-threaded build
     :data TARGET_UNIX: Unix target

doc/python/magnum.rst

@@ -29,6 +29,7 @@
     >>> from magnum import *
 
 .. py:module:: magnum
+    :data BUILD_DEPRECATED: Build with deprecated features enabled
     :data BUILD_STATIC: Static library build
     :data TARGET_GL: OpenGL interoperability
     :data TARGET_GLES: OpenGL ES target

doc/python/pages/changelog.rst

@@ -35,6 +35,10 @@ Changelog
 `Changes since 2020.06`_
 ========================
 
+-   Exposed the :ref:`corrade.BUILD_DEPRECATED` and
+    :ref:`magnum.BUILD_DEPRECATED` constants, as some features may work
+    differently depending on these being enabled or not and it's useful to be
+    able to query this
 -   Exposed missing :ref:`Vector4` constructor from a :ref:`Vector3` and a
     W component and :ref:`Vector3` from :ref:`Vector2` and a Z component
 -   Renamed :py:`Matrix3.from()` / :py:`Matrix4.from()` to :ref:`Matrix3.from_()`

src/python/corrade/corrade.cpp

@@ -39,6 +39,13 @@ namespace py = pybind11;
 extern "C" PYBIND11_EXPORT PyObject* PyInit__corrade();
 PYBIND11_MODULE(_corrade, m) {
     m.doc() = "Root Corrade module";
+    m.attr("BUILD_DEPRECATED") =
+        #ifdef CORRADE_BUILD_DEPRECATED
+        true
+        #else
+        false
+        #endif
+        ;
     m.attr("BUILD_STATIC") =
         #ifdef CORRADE_BUILD_STATIC
         true

src/python/magnum/magnum.cpp

@@ -156,6 +156,13 @@ template<class T> void imageViewFromMutable(py::class_<T, PyImageViewHolder<T>>&
 }
 
 void magnum(py::module_& m) {
+    m.attr("BUILD_DEPRECATED") =
+        #ifdef MAGNUM_BUILD_DEPRECATED
+        true
+        #else
+        false
+        #endif
+        ;
     m.attr("BUILD_STATIC") =
         #ifdef MAGNUM_BUILD_STATIC
         true