Change how building Foundation macros is disabled and Foundation is configured on the CI

Author: finagolfin

swift-android.patch

@@ -2,30 +2,40 @@ diff --git a/swift/utils/build-script-impl b/swift/utils/build-script-impl
 index 16e05052609..114e768bdbb 100755
 --- a/swift/utils/build-script-impl
 +++ b/swift/utils/build-script-impl
-@@ -2412,7 +2412,7 @@ for host in "${ALL_HOSTS[@]}"; do
- 
-                 ;;
-             foundation_macros)
--                if [[ ${host} == "macosx"* ]]; then
-+                if [[ ${host} == "macosx"* ]] || [[ "${host}" == "android-"* ]]; then
-                     echo "Skipping Foundation Macros on OS X -- Foundation is part of the OS on this platform"
+@@ -2409,6 +2409,11 @@ for host in "${ALL_HOSTS[@]}"; do
                      continue
                  fi
-@@ -2601,6 +2601,7 @@ for host in "${ALL_HOSTS[@]}"; do
-                 if [[ "${host}" == "android-"* ]]; then
-                     cmake_options+=(
-                         -DCMAKE_HAVE_LIBC_PTHREAD=True
-+                        -DSwiftFoundation_MODULE_TRIPLE:STRING="${ANDROID_ARCH}-unknown-linux-android"
+ 
++                if [[ "${BUILD_SWIFT_TOOLS}" == "0" ]]; then
++                    echo "Skipping building Foundation Macros for ${host}, because the host tools are not being built"
++                    continue
++                fi
++
+                 if [[ "${SKIP_CLEAN_FOUNDATION}" == "0" ]]
+                 then
+                   # The Swift project might have been changed, but CMake might
+@@ -2558,11 +2563,6 @@ for host in "${ALL_HOSTS[@]}"; do
+                         -DCMAKE_FIND_ROOT_PATH:PATH="${CROSS_COMPILE_DEPS_PATH}"
                      )
                  fi
+-                if [[ "${host}" == "android-"* ]]; then
+-                    cmake_options+=(
+-                        -DCMAKE_HAVE_LIBC_PTHREAD=True
+-                    )
+-                fi
                  ;;
-@@ -3113,7 +3113,7 @@ for host in "${ALL_HOSTS[@]}"; do
-                 ;;
-             foundation|foundation_static|foundation_macros)
-                 # FIXME: Foundation doesn't build from the script on OS X
--                if [[ ${host} == "macosx"* ]]; then
-+                if [[ ${host} == "macosx"* ]] || [[ "${host}" == "android-"* && "${product}" == "foundation_macros" ]]; then
-                     echo "Skipping Foundation on OS X -- Foundation does not build for this platform"
+             libdispatch|libdispatch_static)
+                 LIBDISPATCH_BUILD_DIR=$(build_directory ${host} ${product})
+@@ -3009,6 +3009,11 @@ for host in "${ALL_HOSTS[@]}"; do
+                     continue
+                 fi
+ 
++                if [[ "${BUILD_SWIFT_TOOLS}" == "0" && "${product}" == "foundation_macros" ]]; then
++                    echo "Skipping installing Foundation Macros for ${host}, because the host tools are not being built"
++                    continue
++                fi
++
+                 if [[ -z "${INSTALL_FOUNDATION}" ]] ; then
                      continue
                  fi
 diff --git a/swift-corelibs-foundation/CMakeLists.txt b/swift-corelibs-foundation/CMakeLists.txt
@@ -68,3 +78,18 @@ index 016bf294..5c42986a 100644
 
  if(LINKER_SUPPORTS_BUILD_ID)
    target_link_options(Foundation PRIVATE "LINKER:--build-id=sha1")
+diff --git a/swift-foundation/cmake/modules/SwiftFoundationSwiftSupport.cmake b/swift-foundation/cmake/modules/SwiftFoundationSwiftSupport.cmake
+index cbdfc2a..bb4121d 100644
+--- a/swift-foundation/cmake/modules/SwiftFoundationSwiftSupport.cmake
++++ b/swift-foundation/cmake/modules/SwiftFoundationSwiftSupport.cmake
+@@ -37,6 +37,10 @@ function(_swift_foundation_install_target module)
+     set(module_triple_command "${CMAKE_Swift_COMPILER}" -print-target-info)
+     if(CMAKE_Swift_COMPILER_TARGET)
+       list(APPEND module_triple_command -target ${CMAKE_Swift_COMPILER_TARGET})
++    else()
++      set(arg_list ${CMAKE_Swift_FLAGS})
++      separate_arguments(arg_list)
++      list(APPEND module_triple_command ${arg_list})
+     endif()
+     execute_process(COMMAND ${module_triple_command} OUTPUT_VARIABLE target_info_json)
+     string(JSON module_triple GET "${target_info_json}" "target" "moduleTriple")