TestGetSystemPythonExecutable.test_virtualenv test fail
The `TestGetSystemPythonExecutable.test_virtualenv` and `TestGetSystemPythonExecutable.test_venv` tests started failing all of a sudden.
Error was:
```
ModuleNotFoundError: No module named \\'pytoml\\'\\n'
```
This ca be reproduced in local via:
```sh
pytest tests/test_pythonpackage_basic.py::TestGetSystemPythonExecutable::test_virtualenv
```


diff --git a/pythonforandroid/recipes/libiconv/__init__.py b/pythonforandroid/recipes/libiconv/__init__.py
index 6bde196e..530497a2 100644
--- a/pythonforandroid/recipes/libiconv/__init__.py
+++ b/pythonforandroid/recipes/libiconv/__init__.py
@@ -20,7 +20,7 @@ class LibIconvRecipe(Recipe):
         with current_directory(self.get_build_dir(arch.arch)):
             shprint(
                 sh.Command('./configure'),
-                '--host=' + arch.toolchain_prefix,
+                '--host=' + arch.command_prefix,
                 '--prefix=' + self.ctx.get_python_install_dir(),
                 _env=env)
             shprint(sh.make, '-j' + str(cpu_count()), _env=env)
diff --git a/pythonforandroid/recipes/libzbar/__init__.py b/pythonforandroid/recipes/libzbar/__init__.py
index 8d7d48e2..5b1b62d8 100644
--- a/pythonforandroid/recipes/libzbar/__init__.py
+++ b/pythonforandroid/recipes/libzbar/__init__.py
@@ -32,7 +32,7 @@ class LibZBarRecipe(Recipe):
             shprint(sh.Command('autoreconf'), '-vif', _env=env)
             shprint(
                 sh.Command('./configure'),
-                '--host=' + arch.toolchain_prefix,
+                '--host=' + arch.command_prefix,
                 '--target=' + arch.toolchain_prefix,
                 '--prefix=' + self.ctx.get_python_install_dir(),
                 # Python bindings are compiled in a separated recipe
['pythonforandroid/recipes/libzbar/__init__.py', 'pythonforandroid/recipes/libiconv/__init__.py']