[Bug 293845] Compilation fails with "use of undeclared identifier '__builtin_ia32_readeflags_u32'" on aarch64

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From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 15 Mar 2026 22:03:00 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293845

            Bug ID: 293845
           Summary: Compilation fails with "use of undeclared identifier
                    '__builtin_ia32_readeflags_u32'" on aarch64
           Product: Base System
           Version: 15.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: yuri@freebsd.org

The graphics/openusd port fails to compile on aarch64.

Log:
https://pkg-status.freebsd.org/ampere5/data/150arm64-default/df4f957ea181/logs/openusd-25.11.log

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