CONFIGURATION!

scripts/kconfig/tests/conditional_dep/Kconfig

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+# SPDX-License-Identifier: GPL-2.0
+# Test Kconfig file for conditional dependencies.
+
+# Enable module support for tristate testing
+config MODULES
+	bool "Enable loadable module support"
+	modules
+	default y
+
+config FOO
+	bool "FOO symbol"
+
+config BAR
+	bool "BAR symbol"
+
+config TEST_BASIC
+	bool "Test basic conditional dependency"
+	depends on FOO if BAR
+	default y
+
+config TEST_COMPLEX
+	bool "Test complex conditional dependency"
+	depends on (FOO && BAR) if (FOO || BAR)
+	default y
+
+config BAZ
+	tristate "BAZ symbol"
+
+config TEST_OPTIONAL
+	tristate "Test simple optional dependency"
+	depends on BAZ if BAZ
+	default y

scripts/kconfig/tests/conditional_dep/__init__.py

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+# SPDX-License-Identifier: GPL-2.0
+"""
+Correctly handle conditional dependencies.
+"""
+
+def test(conf):
+    assert conf.oldconfig('test_config1') == 0
+    assert conf.config_matches('expected_config1')
+
+    assert conf.oldconfig('test_config2') == 0
+    assert conf.config_matches('expected_config2')
+
+    assert conf.oldconfig('test_config3') == 0
+    assert conf.config_matches('expected_config3')

scripts/kconfig/tests/conditional_dep/expected_config1

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+#
+# Automatically generated file; DO NOT EDIT.
+# Main menu
+#
+CONFIG_MODULES=y
+CONFIG_FOO=y
+CONFIG_BAR=y
+CONFIG_TEST_BASIC=y
+CONFIG_TEST_COMPLEX=y
+CONFIG_BAZ=m
+CONFIG_TEST_OPTIONAL=m

scripts/kconfig/tests/conditional_dep/expected_config2

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+#
+# Automatically generated file; DO NOT EDIT.
+# Main menu
+#
+CONFIG_MODULES=y
+# CONFIG_FOO is not set
+CONFIG_BAR=y
+CONFIG_BAZ=y
+CONFIG_TEST_OPTIONAL=y

scripts/kconfig/tests/conditional_dep/expected_config3

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+#
+# Automatically generated file; DO NOT EDIT.
+# Main menu
+#
+CONFIG_MODULES=y
+# CONFIG_FOO is not set
+# CONFIG_BAR is not set
+CONFIG_TEST_BASIC=y
+CONFIG_TEST_COMPLEX=y
+# CONFIG_BAZ is not set
+CONFIG_TEST_OPTIONAL=y

scripts/kconfig/tests/conditional_dep/test_config1

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+# Basic check that everything can be configured if selected.
+CONFIG_FOO=y
+CONFIG_BAR=y
+CONFIG_BAZ=m
+# Ensure that TEST_OPTIONAL=y with BAZ=m is converted to TEST_OPTIONAL=m
+CONFIG_TEST_OPTIONAL=y

scripts/kconfig/tests/conditional_dep/test_config2

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+# If FOO is not selected, then TEST_BASIC should fail the conditional
+# dependency since BAR is set.
+# TEST_COMPLEX will fail dependency as it depends on both FOO and BAR
+# if either of those is selected.
+CONFIG_FOO=n
+CONFIG_BAR=y
+CONFIG_BAZ=y

scripts/kconfig/tests/conditional_dep/test_config3

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+# If FOO is not selected, but BAR is also not selected, then TEST_BASIC
+# should pass since the dependency on FOO is conditional on BAR.
+# TEST_COMPLEX should be also set since neither FOO nor BAR are selected
+# so it has no dependencies.
+CONFIG_FOO=n
+CONFIG_BAR=n