Merge pull request #66655 from apple/maxd/bsi-bsd-arm64

build-script-impl: add support for `freebsd-arm64`

Author: swift-ci

cmake/modules/SwiftConfigureSDK.cmake

@@ -378,7 +378,7 @@ macro(configure_sdk_unix name architectures)
           message(FATAL_ERROR "unknown arch for ${prefix}: ${arch}")
         endif()
       elseif("${prefix}" STREQUAL "FREEBSD")
-        if(NOT arch STREQUAL x86_64)
+        if(NOT arch MATCHES "(arm64|x86_64)")
           message(FATAL_ERROR "unsupported arch for FreeBSD: ${arch}")
         endif()
 
@@ -389,7 +389,7 @@ macro(configure_sdk_unix name architectures)
         string(REGEX REPLACE "[-].*" "" freebsd_system_version ${CMAKE_SYSTEM_VERSION})
         message(STATUS "FreeBSD Version: ${freebsd_system_version}")
 
-        set(SWIFT_SDK_FREEBSD_ARCH_x86_64_TRIPLE "x86_64-unknown-freebsd${freebsd_system_version}")
+        set(SWIFT_SDK_FREEBSD_ARCH_${arch}_TRIPLE "${arch}-unknown-freebsd${freebsd_system_version}")
       elseif("${prefix}" STREQUAL "OPENBSD")
         if(NOT arch STREQUAL amd64)
           message(FATAL_ERROR "unsupported arch for OpenBSD: ${arch}")

utils/build-script-impl

@@ -452,7 +452,8 @@ function should_execute_host_actions_for_phase() {
 function verify_host_is_supported() {
     local host="$1"
     case ${host} in
-      freebsd-x86_64            \
+      freebsd-arm64             \
+      | freebsd-x86_64          \
       | openbsd-amd64           \
       | cygwin-x86_64           \
       | haiku-x86_64            \