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rules_cc/tools/migration/legacy_fields_migration_lib_test.py

1241 lines
50 KiB
Python

import unittest
from google.protobuf import text_format
from third_party.com.github.bazelbuild.bazel.src.main.protobuf import crosstool_config_pb2
from tools.migration.legacy_fields_migration_lib import ALL_CC_COMPILE_ACTIONS
from tools.migration.legacy_fields_migration_lib import ALL_OBJC_COMPILE_ACTIONS
from tools.migration.legacy_fields_migration_lib import ALL_CXX_COMPILE_ACTIONS
from tools.migration.legacy_fields_migration_lib import ALL_CC_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import ALL_OBJC_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import DYNAMIC_LIBRARY_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import NODEPS_DYNAMIC_LIBRARY_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import TRANSITIVE_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import TRANSITIVE_DYNAMIC_LIBRARY_LINK_ACTIONS
from tools.migration.legacy_fields_migration_lib import CC_LINK_EXECUTABLE
from tools.migration.legacy_fields_migration_lib import migrate_legacy_fields
def assert_has_feature(self, toolchain, name):
self.assertTrue(any(feature.name == name for feature in toolchain.feature))
def make_crosstool(string):
crosstool = crosstool_config_pb2.CrosstoolRelease()
text_format.Merge("major_version: '123' minor_version: '456'", crosstool)
toolchain = crosstool.toolchain.add()
text_format.Merge(string, toolchain)
return crosstool
def migrate_to_string(crosstool):
migrate_legacy_fields(crosstool)
return to_string(crosstool)
def to_string(crosstool):
return text_format.MessageToString(crosstool)
class LegacyFieldsMigrationLibTest(unittest.TestCase):
def test_deletes_fields(self):
crosstool = make_crosstool("""
debian_extra_requires: 'debian-1'
gcc_plugin_compiler_flag: 'gcc_plugin_compiler_flag-1'
ar_flag: 'ar_flag-1'
ar_thin_archives_flag: 'ar_thin_archives_flag-1'
gcc_plugin_header_directory: 'gcc_plugin_header_directory-1'
mao_plugin_header_directory: 'mao_plugin_header_directory-1'
default_python_top: 'default_python_top-1'
default_python_version: 'default_python_version-1'
python_preload_swigdeps: false
supports_normalizing_ar: false
supports_thin_archives: false
supports_incremental_linker: false
supports_dsym: false
supports_gold_linker: false
needsPic: false
supports_start_end_lib: false
supports_interface_shared_objects: false
supports_fission: false
supports_embedded_runtimes: false
static_runtimes_filegroup: 'yolo'
dynamic_runtimes_filegroup: 'yolo'
""")
output = migrate_to_string(crosstool)
self.assertNotIn("debian_extra_requires", output)
self.assertNotIn("gcc_plugin_compiler_flag", output)
self.assertNotIn("ar_flag", output)
self.assertNotIn("ar_thin_archives_flag", output)
self.assertNotIn("gcc_plugin_header_directory", output)
self.assertNotIn("mao_plugin_header_directory", output)
self.assertNotIn("supports_normalizing_ar", output)
self.assertNotIn("supports_thin_archives", output)
self.assertNotIn("supports_incremental_linker", output)
self.assertNotIn("supports_dsym", output)
self.assertNotIn("default_python_top", output)
self.assertNotIn("default_python_version", output)
self.assertNotIn("python_preload_swigdeps", output)
self.assertNotIn("supports_gold_linker", output)
self.assertNotIn("needsPic", output)
self.assertNotIn("supports_start_end_lib", output)
self.assertNotIn("supports_interface_shared_objects", output)
self.assertNotIn("supports_fission", output)
self.assertNotIn("supports_embedded_runtimes", output)
self.assertNotIn("static_runtimes_filegroup", output)
self.assertNotIn("dynamic_runtimes_filegroup", output)
def test_deletes_default_toolchains(self):
crosstool = make_crosstool("")
crosstool.default_toolchain.add()
self.assertEqual(len(crosstool.default_toolchain), 1)
migrate_legacy_fields(crosstool)
self.assertEqual(len(crosstool.default_toolchain), 0)
def test_replace_legacy_compile_flags(self):
crosstool = make_crosstool("""
feature { name: 'foo' }
feature { name: 'legacy_compile_flags' }
compiler_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compiler_flag), 0)
self.assertEqual(output.feature[0].name, "foo")
self.assertEqual(output.feature[1].name, "default_compile_flags")
self.assertEqual(output.feature[1].flag_set[0].action,
ALL_CC_COMPILE_ACTIONS)
self.assertEqual(output.feature[1].flag_set[0].flag_group[0].flag,
["clang-flag-1"])
def test_replace_legacy_compile_flags_in_action_configs(self):
crosstool = make_crosstool("""
feature {
name: 'foo'
implies: 'legacy_compile_flags'
requires: { feature: 'legacy_compile_flags' }
flag_set {
with_feature { feature: 'legacy_compile_flags' }
with_feature { not_feature: 'legacy_compile_flags' }
}
env_set {
with_feature { feature: 'legacy_compile_flags' }
with_feature { not_feature: 'legacy_compile_flags' }
}
}
feature { name: 'legacy_compile_flags' }
action_config {
action_name: 'foo'
config_name: 'foo'
implies: 'legacy_compile_flags'
requires: { feature: 'legacy_compile_flags' }
flag_set {
with_feature { feature: 'legacy_compile_flags' }
with_feature { not_feature: 'legacy_compile_flags' }
}
env_set {
with_feature { feature: 'legacy_compile_flags' }
with_feature { not_feature: 'legacy_compile_flags' }
}
}
compiler_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.action_config[0].action_name, "foo")
self.assertEqual(output.action_config[0].implies, [])
self.assertEqual(output.action_config[0].requires[0].feature,
["default_compile_flags"])
self.assertEqual(
output.action_config[0].flag_set[0].with_feature[0].feature,
["default_compile_flags"])
self.assertEqual(
output.action_config[0].flag_set[0].with_feature[1].not_feature,
["default_compile_flags"])
self.assertEqual(output.action_config[0].env_set[0].with_feature[0].feature,
["default_compile_flags"])
self.assertEqual(
output.action_config[0].env_set[0].with_feature[1].not_feature,
["default_compile_flags"])
self.assertEqual(output.feature[0].name, "foo")
self.assertEqual(output.feature[0].implies, [])
self.assertEqual(output.feature[0].requires[0].feature,
["default_compile_flags"])
self.assertEqual(output.feature[0].flag_set[0].with_feature[0].feature,
["default_compile_flags"])
self.assertEqual(output.feature[0].flag_set[0].with_feature[1].not_feature,
["default_compile_flags"])
self.assertEqual(output.feature[0].env_set[0].with_feature[0].feature,
["default_compile_flags"])
self.assertEqual(output.feature[0].env_set[0].with_feature[1].not_feature,
["default_compile_flags"])
def test_replace_legacy_link_flags(self):
crosstool = make_crosstool("""
feature { name: 'foo' }
feature { name: 'legacy_link_flags' }
linker_flag: 'ld-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compiler_flag), 0)
self.assertEqual(output.feature[0].name, "foo")
self.assertEqual(output.feature[1].name, "default_link_flags")
self.assertEqual(output.feature[1].flag_set[0].action, ALL_CC_LINK_ACTIONS)
self.assertEqual(output.feature[1].flag_set[0].flag_group[0].flag,
["ld-flag-1"])
def test_replace_legacy_link_flags_in_action_configs(self):
crosstool = make_crosstool("""
feature {
name: 'foo'
implies: 'legacy_link_flags'
requires: { feature: 'legacy_link_flags' }
flag_set {
with_feature { feature: 'legacy_link_flags' }
with_feature { not_feature: 'legacy_link_flags' }
}
env_set {
with_feature { feature: 'legacy_link_flags' }
with_feature { not_feature: 'legacy_link_flags' }
}
}
feature { name: 'legacy_link_flags' }
action_config {
action_name: 'foo'
config_name: 'foo'
implies: 'legacy_link_flags'
requires: { feature: 'legacy_link_flags' }
flag_set {
with_feature { feature: 'legacy_link_flags' }
with_feature { not_feature: 'legacy_link_flags' }
}
env_set {
with_feature { feature: 'legacy_link_flags' }
with_feature { not_feature: 'legacy_link_flags' }
}
}
linker_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.action_config[0].action_name, "foo")
self.assertEqual(output.action_config[0].implies, [])
self.assertEqual(output.action_config[0].requires[0].feature,
["default_link_flags"])
self.assertEqual(
output.action_config[0].flag_set[0].with_feature[0].feature,
["default_link_flags"])
self.assertEqual(
output.action_config[0].flag_set[0].with_feature[1].not_feature,
["default_link_flags"])
self.assertEqual(output.action_config[0].env_set[0].with_feature[0].feature,
["default_link_flags"])
self.assertEqual(
output.action_config[0].env_set[0].with_feature[1].not_feature,
["default_link_flags"])
self.assertEqual(output.feature[0].name, "foo")
self.assertEqual(output.feature[0].implies, [])
self.assertEqual(output.feature[0].requires[0].feature,
["default_link_flags"])
self.assertEqual(output.feature[0].flag_set[0].with_feature[0].feature,
["default_link_flags"])
self.assertEqual(output.feature[0].flag_set[0].with_feature[1].not_feature,
["default_link_flags"])
self.assertEqual(output.feature[0].env_set[0].with_feature[0].feature,
["default_link_flags"])
self.assertEqual(output.feature[0].env_set[0].with_feature[1].not_feature,
["default_link_flags"])
def test_migrate_compiler_flags(self):
crosstool = make_crosstool("""
compiler_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compiler_flag), 0)
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].action, ALL_CC_COMPILE_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["clang-flag-1"])
def test_migrate_compiler_flags_for_objc(self):
crosstool = make_crosstool("""
action_config { action_name: "objc-compile" }
compiler_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compiler_flag), 0)
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].action, ALL_CC_COMPILE_ACTIONS + ALL_OBJC_COMPILE_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["clang-flag-1"])
def test_migrate_cxx_flags(self):
crosstool = make_crosstool("""
cxx_flag: 'clang-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.cxx_flag), 0)
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].action,
ALL_CXX_COMPILE_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["clang-flag-1"])
def test_compiler_flag_come_before_cxx_flags(self):
crosstool = make_crosstool("""
compiler_flag: 'clang-flag-1'
cxx_flag: 'clang-flag-2'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].action, ALL_CC_COMPILE_ACTIONS)
self.assertEqual(output.feature[0].flag_set[1].action,
ALL_CXX_COMPILE_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["clang-flag-1"])
self.assertEqual(output.feature[0].flag_set[1].flag_group[0].flag,
["clang-flag-2"])
def test_migrate_linker_flags(self):
crosstool = make_crosstool("""
linker_flag: 'linker-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.linker_flag), 0)
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[0].flag_set[0].action, ALL_CC_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["linker-flag-1"])
def test_migrate_dynamic_library_linker_flags(self):
crosstool = make_crosstool("""
dynamic_library_linker_flag: 'linker-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.dynamic_library_linker_flag), 0)
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[0].flag_set[0].action,
DYNAMIC_LIBRARY_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["linker-flag-1"])
def test_compilation_mode_flags(self):
crosstool = make_crosstool("""
compiler_flag: "compile-flag-1"
cxx_flag: "cxx-flag-1"
linker_flag: "linker-flag-1"
compilation_mode_flags {
mode: OPT
compiler_flag: "opt-flag-1"
cxx_flag: "opt-flag-2"
linker_flag: "opt-flag-3"
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compilation_mode_flags), 0)
assert_has_feature(self, output, "opt")
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[1].name, "default_link_flags")
# flag set for compiler_flag fields
self.assertEqual(len(output.feature[0].flag_set[0].with_feature), 0)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["compile-flag-1"])
# flag set for compiler_flag from compilation_mode_flags
self.assertEqual(len(output.feature[0].flag_set[1].with_feature), 1)
self.assertEqual(output.feature[0].flag_set[1].with_feature[0].feature[0],
"opt")
self.assertEqual(output.feature[0].flag_set[1].flag_group[0].flag,
["opt-flag-1"])
# flag set for cxx_flag fields
self.assertEqual(len(output.feature[0].flag_set[2].with_feature), 0)
self.assertEqual(output.feature[0].flag_set[2].flag_group[0].flag,
["cxx-flag-1"])
# flag set for cxx_flag from compilation_mode_flags
self.assertEqual(len(output.feature[0].flag_set[3].with_feature), 1)
self.assertEqual(output.feature[0].flag_set[3].with_feature[0].feature[0],
"opt")
self.assertEqual(output.feature[0].flag_set[3].flag_group[0].flag,
["opt-flag-2"])
# default_link_flags, flag set for linker_flag
self.assertEqual(len(output.feature[1].flag_set[0].with_feature), 0)
self.assertEqual(output.feature[1].flag_set[0].flag_group[0].flag,
["linker-flag-1"])
# default_link_flags, flag set for linker_flag from
# compilation_mode_flags
self.assertEqual(len(output.feature[1].flag_set[1].with_feature), 1)
self.assertEqual(output.feature[1].flag_set[1].with_feature[0].feature[0],
"opt")
self.assertEqual(output.feature[1].flag_set[1].flag_group[0].flag,
["opt-flag-3"])
def test_linking_mode_flags(self):
crosstool = make_crosstool("""
linker_flag: "linker-flag-1"
compilation_mode_flags {
mode: DBG
linker_flag: "dbg-flag-1"
}
linking_mode_flags {
mode: MOSTLY_STATIC
linker_flag: "mostly-static-flag-1"
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.compilation_mode_flags), 0)
self.assertEqual(len(output.linking_mode_flags), 0)
# flag set for linker_flag
self.assertEqual(len(output.feature[0].flag_set[0].with_feature), 0)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["linker-flag-1"])
# flag set for compilation_mode_flags
self.assertEqual(len(output.feature[0].flag_set[1].with_feature), 1)
self.assertEqual(output.feature[0].flag_set[1].with_feature[0].feature[0],
"dbg")
self.assertEqual(output.feature[0].flag_set[1].flag_group[0].flag,
["dbg-flag-1"])
# flag set for linking_mode_flags
self.assertEqual(len(output.feature[0].flag_set[2].with_feature), 1)
self.assertEqual(output.feature[0].flag_set[2].action, CC_LINK_EXECUTABLE)
self.assertEqual(output.feature[0].flag_set[2].with_feature[0].feature[0],
"static_linking_mode")
self.assertEqual(output.feature[0].flag_set[2].flag_group[0].flag,
["mostly-static-flag-1"])
def test_coverage_compilation_mode_ignored(self):
crosstool = make_crosstool("""
compilation_mode_flags {
mode: COVERAGE
compiler_flag: "coverage-flag-1"
cxx_flag: "coverage-flag-2"
linker_flag: "coverage-flag-3"
}
""")
output = migrate_to_string(crosstool)
self.assertNotIn("compilation_mode_flags", output)
self.assertNotIn("coverage-flag-1", output)
self.assertNotIn("coverage-flag-2", output)
self.assertNotIn("coverage-flag-3", output)
self.assertNotIn("COVERAGE", output)
def test_supports_dynamic_linker_when_dynamic_library_linker_flag_is_used(
self):
crosstool = make_crosstool("""
dynamic_library_linker_flag: "foo"
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[1].name, "supports_dynamic_linker")
self.assertEqual(output.feature[1].enabled, True)
def test_supports_dynamic_linker_is_added_when_DYNAMIC_present(self):
crosstool = make_crosstool("""
linking_mode_flags {
mode: DYNAMIC
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_dynamic_linker")
self.assertEqual(output.feature[0].enabled, True)
def test_supports_dynamic_linker_is_not_added_when_present(self):
crosstool = make_crosstool("""
feature { name: "supports_dynamic_linker" enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_dynamic_linker")
self.assertEqual(output.feature[0].enabled, False)
def test_all_linker_flag_ordering(self):
crosstool = make_crosstool("""
linker_flag: 'linker-flag-1'
compilation_mode_flags {
mode: OPT
linker_flag: 'cmf-flag-2'
}
linking_mode_flags {
mode: MOSTLY_STATIC
linker_flag: 'lmf-flag-3'
}
linking_mode_flags {
mode: DYNAMIC
linker_flag: 'lmf-dynamic-flag-4'
}
dynamic_library_linker_flag: 'dl-flag-5'
test_only_linker_flag: 'to-flag-6'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].action[:], ALL_CC_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag[:],
["linker-flag-1"])
self.assertEqual(output.feature[0].flag_set[1].action[:], ALL_CC_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[1].with_feature[0].feature[0],
"opt")
self.assertEqual(output.feature[0].flag_set[1].flag_group[0].flag,
["cmf-flag-2"])
self.assertEqual(output.feature[0].flag_set[2].action, CC_LINK_EXECUTABLE)
self.assertEqual(output.feature[0].flag_set[2].with_feature[0].feature[0],
"static_linking_mode")
self.assertEqual(output.feature[0].flag_set[2].flag_group[0].flag,
["lmf-flag-3"])
self.assertEqual(len(output.feature[0].flag_set[3].with_feature), 0)
self.assertEqual(output.feature[0].flag_set[3].flag_group[0].flag,
["lmf-dynamic-flag-4"])
self.assertEqual(output.feature[0].flag_set[3].action,
NODEPS_DYNAMIC_LIBRARY_LINK_ACTIONS)
self.assertEqual(
output.feature[0].flag_set[4].with_feature[0].not_feature[0],
"static_link_cpp_runtimes")
self.assertEqual(output.feature[0].flag_set[4].flag_group[0].flag,
["lmf-dynamic-flag-4"])
self.assertEqual(output.feature[0].flag_set[4].action,
TRANSITIVE_DYNAMIC_LIBRARY_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[5].with_feature[0].feature[0],
"dynamic_linking_mode")
self.assertEqual(output.feature[0].flag_set[5].flag_group[0].flag,
["lmf-dynamic-flag-4"])
self.assertEqual(output.feature[0].flag_set[5].action,
CC_LINK_EXECUTABLE)
self.assertEqual(output.feature[0].flag_set[6].flag_group[0].flag,
["dl-flag-5"])
self.assertEqual(output.feature[0].flag_set[6].action,
DYNAMIC_LIBRARY_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[7].flag_group[0].flag,
["to-flag-6"])
self.assertEqual(output.feature[0].flag_set[7].action, ALL_CC_LINK_ACTIONS)
self.assertEqual(
output.feature[0].flag_set[7].flag_group[0].expand_if_all_available,
["is_cc_test"])
def test_all_linker_flag_objc_actions(self):
crosstool = make_crosstool("""
action_config { action_name: "objc-compile" }
linker_flag: 'linker-flag-1'
compilation_mode_flags {
mode: OPT
linker_flag: 'cmf-flag-2'
}
linking_mode_flags {
mode: MOSTLY_STATIC
linker_flag: 'lmf-flag-3'
}
dynamic_library_linker_flag: 'dl-flag-5'
test_only_linker_flag: 'to-flag-6'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[0].flag_set[0].action[:],
ALL_CC_LINK_ACTIONS + ALL_OBJC_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[1].action[:],
ALL_CC_LINK_ACTIONS + ALL_OBJC_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[2].action[:],
CC_LINK_EXECUTABLE)
self.assertEqual(output.feature[0].flag_set[3].action[:],
DYNAMIC_LIBRARY_LINK_ACTIONS)
self.assertEqual(output.feature[0].flag_set[4].action[:],
ALL_CC_LINK_ACTIONS + ALL_OBJC_LINK_ACTIONS)
def test_linking_mode_features_are_not_added_when_present(self):
crosstool = make_crosstool("""
linking_mode_flags {
mode: DYNAMIC
linker_flag: 'dynamic-flag'
}
linking_mode_flags {
mode: FULLY_STATIC
linker_flag: 'fully-static-flag'
}
linking_mode_flags {
mode: MOSTLY_STATIC
linker_flag: 'mostly-static-flag'
}
linking_mode_flags {
mode: MOSTLY_STATIC_LIBRARIES
linker_flag: 'mostly-static-libraries-flag'
}
feature { name: "static_linking_mode" }
feature { name: "dynamic_linking_mode" }
feature { name: "static_linking_mode_nodeps_library" }
feature { name: "fully_static_link" }
""")
output = migrate_to_string(crosstool)
self.assertNotIn("linking_mode_flags", output)
self.assertNotIn("DYNAMIC", output)
self.assertNotIn("MOSTLY_STATIC", output)
self.assertNotIn("MOSTLY_STATIC_LIBRARIES", output)
self.assertNotIn("MOSTLY_STATIC_LIBRARIES", output)
self.assertNotIn("dynamic-flag", output)
self.assertNotIn("fully-static-flag", output)
self.assertNotIn("mostly-static-flag", output)
self.assertNotIn("mostly-static-libraries-flag", output)
def test_unfiltered_require_user_compile_flags_and_sysroot(self):
crosstool = make_crosstool("""
feature { name: 'preexisting_feature' }
unfiltered_cxx_flag: 'unfiltered-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
# all these features are added after features that are already present in
# the crosstool
self.assertEqual(output.feature[0].name, "preexisting_feature")
self.assertEqual(output.feature[1].name, "user_compile_flags")
self.assertEqual(output.feature[2].name, "sysroot")
self.assertEqual(output.feature[3].name, "unfiltered_compile_flags")
def test_user_compile_flags_not_migrated_when_present(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
feature { name: 'user_compile_flags' }
feature { name: 'preexisting_feature' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "user_compile_flags")
self.assertEqual(output.feature[1].name, "preexisting_feature")
self.assertEqual(output.feature[2].name, "sysroot")
self.assertEqual(output.feature[3].name, "unfiltered_compile_flags")
def test_sysroot_not_migrated_when_present(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
feature { name: 'sysroot' }
feature { name: 'preexisting_feature' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "sysroot")
self.assertEqual(output.feature[1].name, "preexisting_feature")
self.assertEqual(output.feature[2].name, "user_compile_flags")
self.assertEqual(output.feature[3].name, "unfiltered_compile_flags")
def test_user_compile_flags(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "user_compile_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].action,
ALL_CC_COMPILE_ACTIONS)
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].expand_if_all_available,
["user_compile_flags"])
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].iterate_over,
"user_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["%{user_compile_flags}"])
def test_sysroot(self):
sysroot_actions = ALL_CC_COMPILE_ACTIONS + ALL_CC_LINK_ACTIONS
sysroot_actions.remove("assemble")
self.assertTrue("assemble" not in sysroot_actions)
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[1].name, "sysroot")
self.assertEqual(output.feature[1].enabled, True)
self.assertEqual(output.feature[1].flag_set[0].action, sysroot_actions)
self.assertEqual(
output.feature[1].flag_set[0].flag_group[0].expand_if_all_available,
["sysroot"])
self.assertEqual(output.feature[1].flag_set[0].flag_group[0].flag,
["--sysroot=%{sysroot}"])
def test_unfiltered_compile_flags_is_not_added_when_already_present(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
feature { name: 'something_else' }
feature { name: 'unfiltered_compile_flags' }
feature { name: 'something_else_2' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(output.feature[1].name, "unfiltered_compile_flags")
self.assertEqual(len(output.feature[1].flag_set), 0)
self.assertEqual(output.feature[2].name, "something_else_2")
def test_unfiltered_compile_flags_is_not_edited_if_old_variant_present(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
feature {
name: 'unfiltered_compile_flags'
flag_set {
action: 'c-compile'
flag_group {
flag: 'foo-flag-1'
}
}
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "unfiltered_compile_flags")
self.assertEqual(len(output.feature[0].flag_set), 1)
self.assertEqual(output.feature[0].flag_set[0].action, ["c-compile"])
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["foo-flag-1"])
def test_use_of_unfiltered_compile_flags_var_is_removed_and_replaced(self):
crosstool = make_crosstool("""
unfiltered_cxx_flag: 'unfiltered-flag-1'
feature {
name: 'unfiltered_compile_flags'
flag_set {
action: 'c-compile'
flag_group {
flag: 'foo-flag-1'
}
}
flag_set {
action: 'c++-compile'
flag_group {
flag: 'bar-flag-1'
}
flag_group {
expand_if_all_available: 'unfiltered_compile_flags'
iterate_over: 'unfiltered_compile_flags'
flag: '%{unfiltered_compile_flags}'
}
flag_group {
flag: 'bar-flag-2'
}
}
flag_set {
action: 'c-compile'
flag_group {
flag: 'foo-flag-2'
}
}
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "unfiltered_compile_flags")
self.assertEqual(output.feature[0].flag_set[0].action, ["c-compile"])
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["foo-flag-1"])
self.assertEqual(output.feature[0].flag_set[1].action, ["c++-compile"])
self.assertEqual(output.feature[0].flag_set[1].flag_group[0].flag,
["bar-flag-1"])
self.assertEqual(output.feature[0].flag_set[1].flag_group[1].flag,
["unfiltered-flag-1"])
self.assertEqual(output.feature[0].flag_set[1].flag_group[2].flag,
["bar-flag-2"])
self.assertEqual(output.feature[0].flag_set[2].action, ["c-compile"])
self.assertEqual(output.feature[0].flag_set[2].flag_group[0].flag,
["foo-flag-2"])
def test_unfiltered_compile_flags_is_added_at_the_end(self):
crosstool = make_crosstool("""
feature { name: 'something_else' }
unfiltered_cxx_flag: 'unfiltered-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(output.feature[1].name, "user_compile_flags")
self.assertEqual(output.feature[2].name, "sysroot")
self.assertEqual(output.feature[3].name, "unfiltered_compile_flags")
self.assertEqual(output.feature[3].flag_set[0].action,
ALL_CC_COMPILE_ACTIONS)
self.assertEqual(output.feature[3].flag_set[0].flag_group[0].flag,
["unfiltered-flag-1"])
def test_unfiltered_compile_flags_are_not_added_for_objc(self):
crosstool = make_crosstool("""
action_config { action_name: "obc-compile" }
feature { name: 'something_else' }
unfiltered_cxx_flag: 'unfiltered-flag-1'
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[3].name, "unfiltered_compile_flags")
self.assertEqual(output.feature[3].flag_set[0].action,
ALL_CC_COMPILE_ACTIONS)
self.assertEqual(output.feature[3].flag_set[0].flag_group[0].flag,
["unfiltered-flag-1"])
def test_default_link_flags_is_added_first(self):
crosstool = make_crosstool("""
linker_flag: 'linker-flag-1'
feature { name: 'something_else' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_link_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["linker-flag-1"])
def test_default_link_flags_is_not_added_when_already_present(self):
crosstool = make_crosstool("""
linker_flag: 'linker-flag-1'
feature { name: 'something_else' }
feature { name: 'default_link_flags' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(output.feature[1].name, "default_link_flags")
def test_default_compile_flags_is_not_added_when_no_reason_to(self):
crosstool = make_crosstool("""
feature { name: 'something_else' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(len(output.feature), 1)
def test_default_compile_flags_is_first(self):
crosstool = make_crosstool("""
compiler_flag: 'compiler-flag-1'
feature { name: 'something_else' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "default_compile_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag,
["compiler-flag-1"])
def test_default_compile_flags_not_added_when_present(self):
crosstool = make_crosstool("""
compiler_flag: 'compiler-flag-1'
feature { name: 'something_else' }
feature { name: 'default_compile_flags' }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(output.feature[1].name, "default_compile_flags")
self.assertEqual(len(output.feature[1].flag_set), 0)
def test_supports_start_end_lib_migrated(self):
crosstool = make_crosstool("supports_start_end_lib: true")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_start_end_lib")
self.assertEqual(output.feature[0].enabled, True)
def test_supports_start_end_lib_not_migrated_on_false(self):
crosstool = make_crosstool("supports_start_end_lib: false")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.feature), 0)
def test_supports_start_end_lib_not_migrated_when_already_present(self):
crosstool = make_crosstool("""
supports_start_end_lib: true
feature { name: "supports_start_end_lib" enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_start_end_lib")
self.assertEqual(output.feature[0].enabled, False)
def test_supports_interface_shared_libraries_migrated(self):
crosstool = make_crosstool("supports_interface_shared_objects: true")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name,
"supports_interface_shared_libraries")
self.assertEqual(output.feature[0].enabled, True)
def test_supports_interface_shared_libraries_not_migrated_on_false(self):
crosstool = make_crosstool("supports_interface_shared_objects: false")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.feature), 0)
def test_supports_interface_shared_libraries_not_migrated_when_present(self):
crosstool = make_crosstool("""
supports_interface_shared_objects: true
feature {
name: "supports_interface_shared_libraries"
enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name,
"supports_interface_shared_libraries")
self.assertEqual(output.feature[0].enabled, False)
def test_supports_embedded_runtimes_migrated(self):
crosstool = make_crosstool("supports_embedded_runtimes: true")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "static_link_cpp_runtimes")
self.assertEqual(output.feature[0].enabled, True)
def test_supports_embedded_runtimes_not_migrated_on_false(self):
crosstool = make_crosstool("supports_embedded_runtimes: false")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.feature), 0)
def test_supports_embedded_runtimes_not_migrated_when_already_present(self):
crosstool = make_crosstool("""
supports_embedded_runtimes: true
feature { name: "static_link_cpp_runtimes" enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "static_link_cpp_runtimes")
self.assertEqual(output.feature[0].enabled, False)
def test_needs_pic_migrated(self):
crosstool = make_crosstool("needsPic: true")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_pic")
self.assertEqual(output.feature[0].enabled, True)
def test_needs_pic_not_migrated_on_false(self):
crosstool = make_crosstool("needsPic: false")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.feature), 0)
def test_needs_pic_not_migrated_when_already_present(self):
crosstool = make_crosstool("""
needsPic: true
feature { name: "supports_pic" enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "supports_pic")
self.assertEqual(output.feature[0].enabled, False)
def test_supports_fission_migrated(self):
crosstool = make_crosstool("supports_fission: true")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "per_object_debug_info")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].expand_if_all_available,
["is_using_fission"])
def test_supports_fission_not_migrated_on_false(self):
crosstool = make_crosstool("supports_fission: false")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(len(output.feature), 0)
def test_supports_fission_not_migrated_when_already_present(self):
crosstool = make_crosstool("""
supports_fission: true
feature { name: "per_object_debug_info" enabled: false }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "per_object_debug_info")
self.assertEqual(output.feature[0].enabled, False)
def test_migrating_objcopy_embed_flag(self):
crosstool = make_crosstool("""
tool_path { name: "objcopy" path: "foo/objcopy" }
objcopy_embed_flag: "a"
objcopy_embed_flag: "b"
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "objcopy_embed_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].action[:],
["objcopy_embed_data"])
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag[:],
["a", "b"])
self.assertEqual(len(output.objcopy_embed_flag), 0)
self.assertEqual(output.action_config[0].action_name, "objcopy_embed_data")
self.assertEqual(output.action_config[0].tool[0].tool_path, "foo/objcopy")
def test_not_migrating_objcopy_embed_flag_when_feature_present(self):
crosstool = make_crosstool("""
objcopy_embed_flag: "a"
objcopy_embed_flag: "b"
feature { name: "objcopy_embed_flags" }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "objcopy_embed_flags")
self.assertEqual(output.feature[0].enabled, False)
def test_migrating_ld_embed_flag(self):
crosstool = make_crosstool("""
tool_path { name: "ld" path: "foo/ld" }
ld_embed_flag: "a"
ld_embed_flag: "b"
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "ld_embed_flags")
self.assertEqual(output.feature[0].enabled, True)
self.assertEqual(output.feature[0].flag_set[0].action[:], ["ld_embed_data"])
self.assertEqual(output.feature[0].flag_set[0].flag_group[0].flag[:],
["a", "b"])
self.assertEqual(len(output.ld_embed_flag), 0)
self.assertEqual(output.action_config[0].action_name, "ld_embed_data")
self.assertEqual(output.action_config[0].tool[0].tool_path, "foo/ld")
def test_not_migrating_objcopy_embed_flag_when_feature_present(self):
crosstool = make_crosstool("""
objcopy_embed_flag: "a"
objcopy_embed_flag: "b"
feature { name: "objcopy_embed_flags" }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "objcopy_embed_flags")
self.assertEqual(output.feature[0].enabled, False)
def test_migrate_expand_if_all_available_from_flag_sets(self):
crosstool = make_crosstool("""
action_config {
action_name: 'something'
config_name: 'something'
flag_set {
expand_if_all_available: 'foo'
flag_group {
flag: '%{foo}'
}
flag_group {
flag: 'bar'
}
}
}
feature {
name: 'something_else'
flag_set {
action: 'c-compile'
expand_if_all_available: 'foo'
flag_group {
flag: '%{foo}'
}
flag_group {
flag: 'bar'
}
}
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.action_config[0].action_name, "something")
self.assertEqual(len(output.action_config[0].flag_set), 1)
self.assertEqual(
len(output.action_config[0].flag_set[0].expand_if_all_available), 0)
self.assertEqual(len(output.action_config[0].flag_set[0].flag_group), 2)
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[0]
.expand_if_all_available, ["foo"])
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[1]
.expand_if_all_available, ["foo"])
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(len(output.feature[0].flag_set), 1)
self.assertEqual(
len(output.feature[0].flag_set[0].expand_if_all_available), 0)
self.assertEqual(len(output.feature[0].flag_set[0].flag_group), 2)
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].expand_if_all_available,
["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].expand_if_all_available,
["foo"])
def test_enable_previously_default_features(self):
default_features = [
"dependency_file", "random_seed", "module_maps", "module_map_home_cwd",
"header_module_compile", "include_paths", "pic", "preprocessor_define"
]
crosstool = make_crosstool("""
feature { name: "dependency_file" }
feature { name: "random_seed" }
feature { name: "module_maps" }
feature { name: "module_map_home_cwd" }
feature { name: "header_module_compile" }
feature { name: "include_paths" }
feature { name: "pic" }
feature { name: "preprocessor_define" }
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
for i in range(0, 8):
self.assertEqual(output.feature[i].name, default_features[i])
self.assertTrue(output.feature[i].enabled)
def test_migrate_repeated_expand_if_all_available_from_flag_groups(self):
crosstool = make_crosstool("""
action_config {
action_name: 'something'
config_name: 'something'
flag_set {
flag_group {
expand_if_all_available: 'foo'
expand_if_all_available: 'bar'
flag: '%{foo}'
}
flag_group {
expand_if_none_available: 'foo'
expand_if_none_available: 'bar'
flag: 'bar'
}
}
}
feature {
name: 'something_else'
flag_set {
action: 'c-compile'
flag_group {
expand_if_all_available: 'foo'
expand_if_all_available: 'bar'
flag: '%{foo}'
}
flag_group {
expand_if_none_available: 'foo'
expand_if_none_available: 'bar'
flag: 'bar'
}
}
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.action_config[0].action_name, "something")
self.assertEqual(len(output.action_config[0].flag_set), 1)
self.assertEqual(
len(output.action_config[0].flag_set[0].expand_if_all_available), 0)
self.assertEqual(len(output.action_config[0].flag_set[0].flag_group), 2)
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[0]
.expand_if_all_available, ["foo"])
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[0].flag_group[0]
.expand_if_all_available, ["bar"])
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[1]
.expand_if_none_available, ["foo"])
self.assertEqual(
output.action_config[0].flag_set[0].flag_group[1].flag_group[0]
.expand_if_none_available, ["bar"])
self.assertEqual(output.feature[0].name, "something_else")
self.assertEqual(len(output.feature[0].flag_set), 1)
self.assertEqual(
len(output.feature[0].flag_set[0].expand_if_all_available), 0)
self.assertEqual(len(output.feature[0].flag_set[0].flag_group), 2)
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].expand_if_all_available,
["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].flag_group[0]
.expand_if_all_available, ["bar"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].expand_if_none_available,
["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0]
.expand_if_none_available, ["bar"])
def test_migrate_repeated_expands_from_nested_flag_groups(self):
crosstool = make_crosstool("""
feature {
name: 'something'
flag_set {
action: 'c-compile'
flag_group {
flag_group {
expand_if_all_available: 'foo'
expand_if_all_available: 'bar'
flag: '%{foo}'
}
}
flag_group {
flag_group {
expand_if_all_available: 'foo'
expand_if_all_available: 'bar'
expand_if_none_available: 'foo'
expand_if_none_available: 'bar'
flag: '%{foo}'
}
}
}
}
""")
migrate_legacy_fields(crosstool)
output = crosstool.toolchain[0]
self.assertEqual(output.feature[0].name, "something")
self.assertEqual(len(output.feature[0].flag_set[0].flag_group), 2)
self.assertEqual(
len(output.feature[0].flag_set[0].flag_group[0].expand_if_all_available
), 0)
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].flag_group[0]
.expand_if_all_available, ["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].flag_group[0].flag_group[0]
.expand_if_all_available, ["bar"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[0].flag_group[0].flag_group[0]
.flag, ["%{foo}"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0]
.expand_if_all_available, ["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0]
.expand_if_none_available, ["foo"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0].flag_group[0]
.expand_if_none_available, ["bar"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0].flag_group[0]
.expand_if_all_available, ["bar"])
self.assertEqual(
output.feature[0].flag_set[0].flag_group[1].flag_group[0].flag_group[0]
.flag, ["%{foo}"])
if __name__ == "__main__":
unittest.main()