Refactored build-script-impl for cross-compiling support

CMakeLists.txt

@@ -469,15 +469,11 @@ function(is_sdk_requested name result_var_name)
   if("${SWIFT_HOST_VARIANT_SDK}" STREQUAL "${name}")
     set("${result_var_name}" "TRUE" PARENT_SCOPE)
   else()
-    if("${SWIFT_SDKS}" STREQUAL "")
-      set("${result_var_name}" "TRUE" PARENT_SCOPE)
+    list(FIND SWIFT_SDKS "${name}" sdk_index)
+    if(${sdk_index} EQUAL -1)
+      set("${result_var_name}" "FALSE" PARENT_SCOPE)
     else()
-      list(FIND SWIFT_SDKS "${name}" sdk_index)
-      if(${sdk_index} EQUAL -1)
-        set("${result_var_name}" "FALSE" PARENT_SCOPE)
-      else()
-        set("${result_var_name}" "TRUE" PARENT_SCOPE)
-      endif()
+      set("${result_var_name}" "TRUE" PARENT_SCOPE)
     endif()
   endif()
 endfunction()

utils/SwiftBuildSupport.py

@@ -194,6 +194,35 @@ def get_preset_options(substitutions, preset_file_names, preset_name):
                          "': " + ", ".join(missing_opts))
         sys.exit(1)
 
+    # Migrate 'swift-sdks' parameter to 'stdlib-deployment-targets'
+    for opt in build_script_impl_opts:
+        if opt.startswith("--swift-sdks"):
+            sdksToConfigure = opt.split("=")[1].split(";")
+            tgts = []
+            # Expand SDKs in to their deployment targets
+            from swift_build_support.targets import StdlibDeploymentTarget
+            for sdk in sdksToConfigure:
+                if sdk == "OSX":
+                    tgts += StdlibDeploymentTarget.OSX.allArchs
+                elif sdk == "IOS":
+                    tgts += StdlibDeploymentTarget.iOS.allArchs
+                elif sdk == "IOS_SIMULATOR":
+                    tgts += StdlibDeploymentTarget.iOSSimulator.allArchs
+                elif sdk == "TVOS":
+                    tgts += StdlibDeploymentTarget.AppleTV.allArchs
+                elif sdk == "TVOS_SIMULATOR":
+                    tgts += StdlibDeploymentTarget.AppleTVSimulator.allArchs
+                elif sdk == "WATCHOS":
+                    tgts += StdlibDeploymentTarget.AppleWatch.allArchs
+                elif sdk == "WATCHOS_SIMULATOR":
+                    tgts += StdlibDeploymentTarget.AppleWatchSimulator.allArchs
+
+            build_script_opts.append("--stdlib-deployment-targets=" +
+                                     " ".join(tgts))
+    # Filter the swift-sdks parameter
+    build_script_impl_opts = [opt for opt in build_script_impl_opts
+                              if not opt.startswith("--swift-sdks")]
+
     return build_script_opts + ["--"] + build_script_impl_opts
 
 

utils/build-presets.ini

@@ -32,8 +32,6 @@ dash-dash
 verbose-build
 build-ninja
 
-swift-sdks=OSX;IOS;IOS_SIMULATOR;TVOS;TVOS_SIMULATOR;WATCHOS;WATCHOS_SIMULATOR
-
 # Build static standard library because it is used
 # to build external projects.
 build-swift-static-stdlib
@@ -76,7 +74,7 @@ skip-build-tvos
 skip-test-tvos
 skip-build-watchos
 skip-test-watchos
-swift-sdks=OSX
+stdlib-deployment-targets=macosx-x86_64
 swift-primary-variant-sdk=OSX
 swift-primary-variant-arch=x86_64
 
@@ -406,7 +404,7 @@ skip-build-tvos
 skip-test-tvos
 skip-build-watchos
 skip-test-watchos
-swift-sdks=OSX
+stdlib-deployment-targets=macosx-x86_64
 swift-primary-variant-sdk=OSX
 swift-primary-variant-arch=x86_64
 
@@ -671,7 +669,6 @@ build-ninja
 build-swift-static-stdlib
 build-swift-stdlib-unittest-extra
 compiler-vendor=apple
-swift-sdks=OSX;IOS;IOS_SIMULATOR;TVOS;TVOS_SIMULATOR;WATCHOS;WATCHOS_SIMULATOR
 
 install-swift
 install-lldb

utils/build-script

@@ -47,6 +47,7 @@ from swift_build_support import products  # noqa (E402)
 from swift_build_support import shell  # noqa (E402)
 import swift_build_support.tar        # noqa (E402)
 import swift_build_support.targets    # noqa (E402)
+from swift_build_support.targets import StdlibDeploymentTarget  # noqa (E402)
 from swift_build_support.cmake import CMake  # noqa (E402)
 from swift_build_support.workspace import Workspace  # noqa(E402)
 from swift_build_support.workspace import compute_build_subdir  # noqa(E402)
@@ -353,13 +354,13 @@ details of the setups of other systems or automated environments.""")
         help="The host target. LLVM, Clang, and Swift will be built for this "
              "target. The built LLVM and Clang will be used to compile Swift "
              "for the cross-compilation targets.",
-        default=swift_build_support.targets.host_target())
+        default=StdlibDeploymentTarget.host_target())
     targets_group.add_argument(
         "--stdlib-deployment-targets",
         help="list of targets to compile or cross-compile the Swift standard "
              "library for. %(default)s by default.",
         nargs="*",
-        default=swift_build_support.targets.stdlib_deployment_targets())
+        default=StdlibDeploymentTarget.default_stdlib_deployment_targets())
 
     projects_group = parser.add_argument_group(
         title="Options to select projects")
@@ -1226,6 +1227,11 @@ details of the setups of other systems or automated environments.""")
     if args.build_subdir is None:
         args.build_subdir = compute_build_subdir(args)
 
+    # Add optional stdlib-deployment-targets
+    if args.android:
+        args.stdlib_deployment_targets.append(
+            StdlibDeploymentTarget.Android.armv7)
+
     workspace = Workspace(
         source_root=SWIFT_SOURCE_ROOT,
         build_root=os.path.join(SWIFT_BUILD_ROOT, args.build_subdir))
@@ -1274,7 +1280,7 @@ details of the setups of other systems or automated environments.""")
     build_script_impl_args = [
         "--workspace", workspace.source_root,
         "--build-dir", workspace.build_root,
-        "--install-prefix", os.path.abspath(args.install_prefix),
+        "--install-prefix", args.install_prefix,
         "--host-target", args.host_target,
         "--stdlib-deployment-targets",
         " ".join(args.stdlib_deployment_targets),