Build all products in build command

Author: fwcd

build-script.py

@@ -434,10 +434,11 @@ def __init__(
         self.verbose = verbose
         self.toolchain = toolchain
 
-    def build(self, product_name: str) -> None:
-        print("** Building " + product_name + " **")
+    def build(self, product_name: Optional[str] = None) -> None:
+        print("** Building " + (product_name or "all products") + " **")
         command = list(self.swiftpm_call)
-        command.extend(["--product", product_name])
+        if product_name:
+            command.extend(["--product", product_name])
 
         env = dict(os.environ)
         env["SWIFT_BUILD_SCRIPT_ENVIRONMENT"] = "1"
@@ -761,12 +762,8 @@ def build_command(args: argparse.Namespace) -> None:
             verbose=args.verbose,
             disable_sandbox=args.disable_sandbox,
         )
-        # Until rdar://53881101 is implemented, we cannot request a build of multiple
-        # targets simultaneously. For now, just build one product after the other.
-        builder.build("SwiftSyntax")
-        builder.build("SwiftSyntaxParser")
-        builder.build("SwiftSyntaxBuilder")
-        builder.build("SwiftSyntaxBuilderGeneration")
+        # Build all products.
+        builder.build()
     except subprocess.CalledProcessError as e:
         fail_for_called_process_error("Building SwiftSyntax failed", e)