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Build Setting: Add a SWIFT_DISABLE_PARSE_AS_LIBRARY Setting #775

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Merged
merged 1 commit into from
Sep 4, 2025
Merged

Build Setting: Add a SWIFT_DISABLE_PARSE_AS_LIBRARY Setting #775

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2 changes: 2 additions & 0 deletions Sources/SWBCore/Settings/BuiltinMacros.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -1046,6 +1046,7 @@ public final class BuiltinMacros {
public static let SWIFT_INDEX_STORE_PATH = BuiltinMacros.declarePathMacro("SWIFT_INDEX_STORE_PATH")
public static let SWIFT_INSTALL_OBJC_HEADER = BuiltinMacros.declareBooleanMacro("SWIFT_INSTALL_OBJC_HEADER")
public static let SWIFT_INSTALLAPI_LAZY_TYPECHECK = BuiltinMacros.declareBooleanMacro("SWIFT_INSTALLAPI_LAZY_TYPECHECK")
public static let SWIFT_DISABLE_PARSE_AS_LIBRARY = BuiltinMacros.declareBooleanMacro("SWIFT_DISABLE_PARSE_AS_LIBRARY")
public static let SWIFT_LIBRARIES_ONLY = BuiltinMacros.declareBooleanMacro("SWIFT_LIBRARIES_ONLY")
public static let SWIFT_LIBRARY_LEVEL = BuiltinMacros.declareStringMacro("SWIFT_LIBRARY_LEVEL")
public static let SWIFT_LIBRARY_PATH = BuiltinMacros.declarePathMacro("SWIFT_LIBRARY_PATH")
Expand Down Expand Up @@ -2222,6 +2223,7 @@ public final class BuiltinMacros {
_SWIFT_EXPLICIT_MODULES_ALLOW_CXX_INTEROP,
_SWIFT_EXPLICIT_MODULES_ALLOW_BEFORE_SWIFT_5,
_EXPERIMENTAL_SWIFT_EXPLICIT_MODULES,
SWIFT_DISABLE_PARSE_AS_LIBRARY,
SWIFT_ENABLE_BARE_SLASH_REGEX,
SWIFT_ENABLE_EMIT_CONST_VALUES,
SWIFT_ENABLE_OPAQUE_TYPE_ERASURE,
Expand Down
2 changes: 1 addition & 1 deletion Sources/SWBCore/SpecImplementations/Tools/SwiftCompiler.swift
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Expand Up @@ -1628,7 +1628,7 @@ public final class SwiftCompilerSpec : CompilerSpec, SpecIdentifierType, SwiftDi
// If there is only a single input, ensure we pass -parse-as-library as appropriate.
if cbc.inputs.count == 1 {
let filename = cbc.inputs[0].absolutePath.basename
if filename != SwiftCompilerSpec.mainFileName && !cbc.scope.evaluate(BuiltinMacros.SWIFT_LIBRARIES_ONLY) {
if filename != SwiftCompilerSpec.mainFileName && !cbc.scope.evaluate(BuiltinMacros.SWIFT_LIBRARIES_ONLY) && !cbc.scope.evaluate(BuiltinMacros.SWIFT_DISABLE_PARSE_AS_LIBRARY) {
// Add -parse-as-library if the only input's file name isn't main.swift and if we didn't already add it due to SWIFT_LIBRARIES_ONLY.
args.append("-parse-as-library")
}
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1 change: 1 addition & 0 deletions Sources/SwiftBuild/ProjectModel/BuildSettings.swift
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Expand Up @@ -99,6 +99,7 @@ extension ProjectModel {
case STRIP_INSTALLED_PRODUCT
case SUPPORTS_TEXT_BASED_API
case SUPPRESS_WARNINGS
case SWIFT_DISABLE_PARSE_AS_LIBRARY
case SWIFT_ENABLE_BARE_SLASH_REGEX
case SWIFT_INDEX_STORE_ENABLE
case SWIFT_INSTALL_MODULE
Expand Down
58 changes: 58 additions & 0 deletions Tests/SWBTaskConstructionTests/SwiftTaskConstructionTests.swift
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Expand Up @@ -4260,6 +4260,64 @@ fileprivate struct SwiftTaskConstructionTests: CoreBasedTests {
}
}

@Test(.requireSDKs(.host))
func swiftDisableParseAsLibrarySettings() async throws {
let targetName = "targetName"
try await withTemporaryDirectory { tmpDir in
let testProject = try await TestProject(
"ProjectName",
sourceRoot: tmpDir.join("srcroot"),
groupTree: TestGroup(
"SomeFiles",
children: [
TestFile("File1.swift"),
]),
targets: [
TestStandardTarget(
targetName,
type: .framework,
buildConfigurations: [
TestBuildConfiguration("Debug", buildSettings: [
"PRODUCT_NAME": "$(TARGET_NAME)",
"SWIFT_EXEC": swiftCompilerPath.str,
"CODE_SIGN_IDENTITY": "",
"SWIFT_VERSION": swiftVersion,
]),
],
buildPhases: [
TestSourcesBuildPhase([
TestBuildFile("File1.swift"),
]),
])
])

let tester = try await TaskConstructionTester(getCore(), testProject)
await tester.checkBuild(
BuildParameters(configuration: "Debug", overrides: ["SWIFT_DISABLE_PARSE_AS_LIBRARY": "YES"]),
runDestination: .host,
) { results in
results.checkTarget(targetName) { target in
results.checkTask(.matchTarget(target), .matchRuleType("SwiftDriver Compilation")) { task in
task.checkCommandLineDoesNotContain("-parse-as-library")
}
}
}

await tester.checkBuild(
BuildParameters(configuration: "Debug", overrides: ["SWIFT_DISABLE_PARSE_AS_LIBRARY": "NO"]),
runDestination: .host,
) { results in
results.checkTarget(targetName) { target in
results.checkTask(.matchTarget(target), .matchRuleType("SwiftDriver Compilation")) { task in
task.checkCommandLineContains(["-parse-as-library"])
}
}
}


}
}

@Test(.requireSDKs(.macOS))
func layoutStringValueWitnesses() async throws {
try await withTemporaryDirectory { tmpDir in
Expand Down