[Build] Skip early-* on non-darwin hosts

These builds do not work outside of darwin currently. Rather than adding
the skip to all the necessary build presets, just disable in the product
instead.

Author: bnbarham

utils/build-presets.ini

@@ -890,11 +890,6 @@ installable-package=%(installable_package)s
 # in Linux CI bots
 relocate-xdg-cache-home-under-build-subdir
 
-# Temporarily disable early swift driver/syntax builds so that linux images
-# can use the swift release images as a base.
-skip-early-swift-driver
-skip-early-swiftsyntax
-
 [preset: buildbot_linux_base]
 mixin-preset=
     mixin_linux_installation
@@ -1149,11 +1144,6 @@ reconfigure
 # in Linux CI bots
 relocate-xdg-cache-home-under-build-subdir
 
-# Temporarily disable early swift driver/syntax builds so that linux images
-# can use the swift release images as a base.
-skip-early-swift-driver
-skip-early-swiftsyntax
-
 [preset: buildbot_incremental_linux]
 mixin-preset=
     buildbot_incremental_linux_base

utils/swift_build_support/swift_build_support/products/earlyswiftdriver.py

@@ -11,6 +11,7 @@
 # ----------------------------------------------------------------------------
 
 import os
+import sys
 
 from . import earlyswiftsyntax
 from . import product
@@ -42,6 +43,11 @@ def is_before_build_script_impl_product(cls):
         return True
 
     def should_build(self, host_target):
+        # Temporarily disable for non-darwin since this build never works
+        # outside of that case currently.
+        if sys.platform != 'darwin':
+            return False
+
         if self.is_cross_compile_target(host_target):
             return False
 

utils/swift_build_support/swift_build_support/products/earlyswiftsyntax.py

@@ -10,6 +10,8 @@
 #
 # ----------------------------------------------------------------------------
 
+import sys
+
 from . import cmake_product
 from .. import toolchain
 
@@ -32,6 +34,11 @@ def is_before_build_script_impl_product(cls):
         return True
 
     def should_build(self, host_target):
+        # Temporarily disable for non-darwin since this build never works
+        # outside of that case currently.
+        if sys.platform != 'darwin':
+            return False
+
         if self.args.build_early_swiftsyntax:
             if toolchain.host_toolchain().find_tool("swift") is None:
                 warn_msg = 'Host toolchain could not locate a '\

validation-test/BuildSystem/infer_dumps_deps_if_verbose_build.test

@@ -2,7 +2,7 @@
 # RUN: mkdir -p %t
 # RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --verbose-build --dry-run --infer --swiftpm --cmake %cmake 2>&1 | %FileCheck %s
 
-# REQUIRES: standalone_build
+# REQUIRES: standalone_build, OS=macosx
 
 # Just make sure we compute the build graph/emit output.
 #

validation-test/BuildSystem/test_early_swift_driver_and_infer.swift

@@ -1,4 +1,4 @@
-# REQUIRES: standalone_build
+# REQUIRES: standalone_build, OS=macosx
 
 # RUN: %empty-directory(%t)
 # RUN: mkdir -p %t

validation-test/BuildSystem/test_early_swift_driver_and_test.test

@@ -1,8 +1,8 @@
-# REQUIRES: standalone_build
+# REQUIRES: standalone_build, OS=macosx
 
 # RUN: %empty-directory(%t)
 # RUN: mkdir -p %t
 # RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --dry-run --test --cmake %cmake 2>&1 | %FileCheck %s
 
 # CHECK: --- Building earlyswiftdriver ---
-# CHECK: cmake --build {{.*}}check-swift-only_early_swiftdriver
+# CHECK: cmake --build {{.*}}check-swift-only_early_swiftdriver