[Bug 49829] New: file.c:237:37: error: 'EXTATTR_NAMESPACE_USER' undeclared building with GCC 9 and FreeBSD

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49829

Bug ID: 49829
           Summary: file.c:237:37: error: 'EXTATTR_NAMESPACE_USER'
                    undeclared building with GCC 9 and FreeBSD
           Product: Wine-staging
           Version: 5.17
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail]
      Distribution: Other

Created attachment 68166
  --> https://bugs.winehq.org/attachment.cgi?id=68166
Excerpt from the failure log

This regression came between version 5.16 and 5.17 and only with
Wine Staging.

I am seeing this on FreeBSD/i386 11.x with GCC 9.