Swift: introduce Xcode autobuilder

Author: AlexDenisov

swift/BUILD.bazel

@@ -30,6 +30,13 @@ pkg_files(
     prefix = "tools",
 )
 
+pkg_files(
+    name = "autobuild",
+    srcs = ["tools/autobuild.sh"],
+    attributes = pkg_attributes(mode = "0755"),
+    prefix = "tools",
+)
+
 pkg_files(
     name = "tracing-config",
     srcs = ["tools/tracing-config.lua"],
@@ -48,6 +55,7 @@ pkg_filegroup(
         ":manifest",
         ":qltest",
         ":tracing-config",
+        ":autobuild",
     ],
     visibility = ["//visibility:public"],
 )
@@ -58,6 +66,12 @@ pkg_runfiles(
     prefix = "tools/" + codeql_platform,
 )
 
+pkg_runfiles(
+    name = "xcode-autobuilder",
+    srcs = ["//swift/xcode-autobuilder"],
+    prefix = "tools/" + codeql_platform,
+)
+
 pkg_files(
     name = "swift-test-sdk-arch",
     srcs = ["//swift/tools/prebuilt:swift-test-sdk"],
@@ -70,6 +84,7 @@ pkg_filegroup(
     srcs = [
         ":extractor",
         ":swift-test-sdk-arch",
+        ":xcode-autobuilder",
     ],
     visibility = ["//visibility:public"],
 )

swift/tools/autobuild.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+exec "${CODEQL_EXTRACTOR_SWIFT_ROOT}/tools/${CODEQL_PLATFORM}/xcode-autobuilder"

swift/xcode-autobuilder/BUILD.bazel

@@ -0,0 +1,13 @@
+load("//swift:rules.bzl", "swift_cc_binary")
+
+swift_cc_binary(
+    name = "xcode-autobuilder",
+    srcs = glob([
+        "*.cpp",
+    ]),
+    visibility = ["//swift:__pkg__"],
+    linkopts = [
+        "-lxml2",
+        "-framework CoreFoundation",
+    ],
+)