✨ Add bz2 and lzma support to Python3

Author: opacam

pythonforandroid/python.py

@@ -169,6 +169,14 @@ def add_flags(include_flags, link_dirs, link_libs):
             add_flags(recipe.include_flags(arch),
                       recipe.link_dirs_flags(arch), recipe.link_libs_flags())
 
+        for library_name in {'libbz2', 'liblzma'}:
+            if library_name in self.ctx.recipe_build_order:
+                info(f'Activating flags for {library_name}')
+                recipe = Recipe.get_recipe(library_name, self.ctx)
+                add_flags(recipe.get_library_includes(arch),
+                          recipe.get_library_ldflags(arch),
+                          recipe.get_library_libs_flag())
+
         # python build system contains hardcoded zlib version which prevents
         # the build of zlib module, here we search for android's zlib version
         # and sets the right flags, so python can be build with android's zlib

pythonforandroid/recipes/python3/__init__.py

@@ -39,6 +39,10 @@ class Python3Recipe(GuestPythonRecipe):
         ]
 
     depends = ['hostpython3', 'sqlite3', 'openssl', 'libffi']
+    # those optional depends allow us to build python compression modules:
+    #   - _bz2.so
+    #   - _lzma.so
+    opt_depends = ['libbz2', 'liblzma']
     conflicts = ['python2']
 
     configure_args = (