added a recipe for bcrypt library (#2035)

closes #1910

pythonforandroid/recipes/bcrypt/__init__.py

@@ -0,0 +1,22 @@
+from pythonforandroid.recipe import CompiledComponentsPythonRecipe, Recipe
+
+
+class BCryptRecipe(CompiledComponentsPythonRecipe):
+    name = 'bcrypt'
+    version = '3.1.7'
+    url = 'https://github.com/pyca/bcrypt/archive/{version}.tar.gz'
+    depends = ['openssl', 'cffi']
+    call_hostpython_via_targetpython = False
+
+    def get_recipe_env(self, arch):
+        env = super(BCryptRecipe, self).get_recipe_env(arch)
+
+        openssl_recipe = Recipe.get_recipe('openssl', self.ctx)
+        env['CFLAGS'] += openssl_recipe.include_flags(arch)
+        env['LDFLAGS'] += openssl_recipe.link_dirs_flags(arch)
+        env['LIBS'] = openssl_recipe.link_libs_flags()
+
+        return env
+
+
+recipe = BCryptRecipe()