Merge pull request #2399 from viblo/pymunk-crash

Fix Pymunk crash on older versions of Android

Author: AndreMiras

pythonforandroid/recipes/pymunk/__init__.py

@@ -10,7 +10,8 @@ class PymunkRecipe(CompiledComponentsPythonRecipe):
 
     def get_recipe_env(self, arch):
         env = super().get_recipe_env(arch)
-        env["LDFLAGS"] += " -llog"
+        env["LDFLAGS"] += " -llog"  # Used by Chipmunk cpMessage
+        env["LDFLAGS"] += " -lm"  # For older versions of Android
         return env