Merge branch 'esp8266-native-pch' into esp32-idf-pch

tests/unit_tests/build_helpers/test_pch.py

@@ -120,3 +120,10 @@ def test_include_closure_marks_unreadable(
         locked.chmod(0o644)
     assert closure["locked.h"] == b"<unreadable>"
     assert "Could not read locked.h" in caplog.text
+
+
+def test_pch_extra_scripts_gated(monkeypatch: pytest.MonkeyPatch) -> None:
+    with patch.dict(os.environ, {}, clear=True):
+        assert pch.pch_extra_scripts() == ["post:pch.py"]
+    monkeypatch.setenv("ESPHOME_PCH_ENABLE", "0")
+    assert pch.pch_extra_scripts() == []

tests/unit_tests/test_platformio_pch_script.py

@@ -165,3 +165,19 @@ def test_copy_pch_script(tmp_path: Path) -> None:
     CORE.build_path = tmp_path
     toolchain.copy_pch_script()
     assert (tmp_path / "pch.py").read_text() == _SCRIPT.read_text()
+
+
+def test_pch_script_hashes_project_local_include_dirs(tmp_path: Path) -> None:
+    """Generated headers in project-local -I dirs (e.g. rp2's lwip_override)
+    must invalidate the checksum when they change."""
+    proj = tmp_path / "dev"
+    override = proj / "lwip_override"
+    override.mkdir(parents=True)
+    (override / "lwipopts.h").write_text("#define TCP_MSS 1460\n")
+    flags = ["-DX=1", "-I", str(override)]
+    _run_script(tmp_path, flags=flags)
+    first = (proj / "esphome_pch.h.gch.sum").read_text()
+    (override / "lwipopts.h").write_text("#define TCP_MSS 536\n")
+    (tmp_path / "fake-gxx.argv").unlink(missing_ok=True)
+    _run_script(tmp_path, flags=flags)
+    assert (proj / "esphome_pch.h.gch.sum").read_text() != first