[build] Fix arm64 build config

mi-ac · V8 LUCI CQ · commit dadce25374f5 · 2025-12-29T02:52:49.000-08:00
In multi-architecture builds, e.g. for Android, the current toolchain is reflected by the `v8_current_cpu`, not `v8_target_cpu`, as the target stays fixed for all varying sub-builds. Bug: 471444397 Change-Id: I09f7c94f9d90f24af565e9601892bf4e83d77681 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/7321244 Reviewed-by: Camillo Bruni <cbruni@chromium.org> Commit-Queue: Michael Achenbach <machenbach@chromium.org> Cr-Commit-Position: refs/heads/main@{#104463}
diff --git a/BUILD.gn b/BUILD.gn
@@ -1094,9 +1094,9 @@ if (target_os == "android") {
 # msan builds.
 # TODO(ishell): support all target archs and add V8_HAVE_TARGET_ARCH similar
 # to V8_TARGET_OS_* and V8_HAVE_TARGET_OS defines.
-if (v8_target_cpu == "arm64") {
+if (v8_current_cpu == "arm64") {
   enabled_external_v8_defines += [ "V8_TARGET_ARCH_ARM64" ]
-} else if (v8_target_cpu == "ppc64") {
+} else if (v8_current_cpu == "ppc64") {
   enabled_external_v8_defines += [ "V8_TARGET_ARCH_PPC64" ]
 }
 
