[pull] swiftwasm-release/5.3 from release/5.3

Package.swift

@@ -247,7 +247,7 @@ if ProcessInfo.processInfo.environment["SWIFTPM_LLBUILD_FWK"] == nil {
 
 if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
     package.dependencies += [
-        .package(url: "https://github.com/apple/swift-tools-support-core.git", .branch("master")),
+        .package(url: "https://github.com/apple/swift-tools-support-core.git", .branch("release/5.3")),
     ]
 } else {
     package.dependencies += [

Sources/Build/BuildPlan.swift

@@ -1042,11 +1042,11 @@ public final class ProductBuildDescription {
             }
         case .executable:
             // Link the Swift stdlib statically, if requested.
-            //
-            // FIXME: This does not work for linux yet (SR-648).
             if buildParameters.shouldLinkStaticSwiftStdlib {
                 if buildParameters.triple.isDarwin() {
                     diagnostics.emit(.swiftBackDeployError)
+                } else if buildParameters.triple.isLinux() {
+                    args += ["-static-stdlib"]
                 }
             }
             args += ["-emit-executable"]

Sources/PackageDescription/CMakeLists.txt

@@ -47,6 +47,8 @@ foreach(PACKAGE_DESCRIPTION_VERSION 4 4_2)
     if(NOT CMAKE_SYSTEM_NAME STREQUAL Darwin)
       target_link_libraries(PD${PACKAGE_DESCRIPTION_VERSION} PRIVATE
         Foundation)
+      target_link_options(PD${PACKAGE_DESCRIPTION_VERSION} PRIVATE
+        "SHELL:-no-toolchain-stdlib-rpath")
     endif()
 
     if(CMAKE_HOST_SYSTEM_NAME STREQUAL Darwin)

Sources/PackageLoading/PackageBuilder.swift

@@ -829,12 +829,12 @@ public final class PackageBuilder {
     func buildConditions(from condition: PackageConditionDescription?) -> [PackageConditionProtocol] {
         var conditions: [PackageConditionProtocol] = []
 
-        if let config = condition?.config.map({ BuildConfiguration(rawValue: $0)! }) {
+        if let config = condition?.config.flatMap({ BuildConfiguration(rawValue: $0) }) {
             let condition = ConfigurationCondition(configuration: config)
             conditions.append(condition)
         }
 
-        if let platforms = condition?.platformNames.map({ platformRegistry.platformByName[$0]! }), !platforms.isEmpty {
+        if let platforms = condition?.platformNames.flatMap({ platformRegistry.platformByName[$0] }), !platforms.isEmpty {
             let condition = PlatformsCondition(platforms: platforms)
             conditions.append(condition)
         }

Tests/BuildTests/BuildPlanTests.swift

@@ -144,7 +144,7 @@ final class BuildPlanTests: XCTestCase {
         let linkArguments = [
             "/fake/path/to/swiftc", "-L", "/path/to/build/debug",
             "-o", "/path/to/build/debug/exe", "-module-name", "exe",
-            "-emit-executable",
+            "-static-stdlib", "-emit-executable",
             "-Xlinker", "-rpath=$ORIGIN",
             "@/path/to/build/debug/exe.product/Objects.LinkFileList",
             "-target", defaultTargetTriple,

Utilities/bootstrap

@@ -610,6 +610,11 @@ def get_swiftpm_flags(args):
     elif cross_compile_hosts:
         error("cannot cross-compile for %s" % cross_compile_hosts)
 
+    # On ELF platforms, remove the host toolchain's stdlib absolute rpath from
+    # installed executables and shared libraries.
+    if platform.system() != "Darwin" and args.command == 'install':
+        build_flags.extend(["-Xswiftc", "-no-toolchain-stdlib-rpath"])
+
     return build_flags
 
 if __name__ == '__main__':