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Date: Fri, 30 Jun 2017 20:19:13 +0800
From: Eryu Guan <eguan@redhat.com>
Subject: xfsprogs for-next branch build failure
Message-ID: <20170630121913.GE23360@eguan.usersys.redhat.com>
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To: linux-xfs@vger.kernel.org
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>, Eric Sandeen <sandeen@sandeen.net>

Hi all,

I'm seeing a xfsprogs for-next branch (HEAD is f77f9908851e) build
failure in my test.

This build failure only happens if I installed 4.12-rc kernel headers,
which has /usr/include/linux/fsmap.h installed, so that in
xfsprogs/include/builddefs it has "HAVE_GETFSMAP = yes" defined.

e.g. install Fedora rawhide kernel package and its kernel header files,
and re-compile xfsprogs.
kernel-4.12.0-0.rc6.git3.1.fc27.x86_64
kernel-headers-4.12.0-0.rc6.git3.1.fc27.x86_64

Build failure log:

...
Building fsck
Building growfs
...
Building io
...
    [CC]     fsmap.o
In file included from ../include/xfs.h:68:0,
                 from io.h:19,   
                 from fsmap.c:24:
fsmap.c: In function ‘special_owner’:
../include/xfs/xfs_fs.h:117:26: error: ‘FMR_OWN_FREE’ undeclared (first use in this function)
 #define XFS_FMR_OWN_FREE FMR_OWN_FREE      /* free space */
                          ^
fsmap.c:61:7: note: in expansion of macro ‘XFS_FMR_OWN_FREE’
  case XFS_FMR_OWN_FREE:
       ^
../include/xfs/xfs_fs.h:117:26: note: each undeclared identifier is reported only once for each function it appears in
 #define XFS_FMR_OWN_FREE FMR_OWN_FREE      /* free space */
                          ^
fsmap.c:61:7: note: in expansion of macro ‘XFS_FMR_OWN_FREE’
  case XFS_FMR_OWN_FREE:
       ^
../include/xfs/xfs_fs.h:118:29: error: ‘FMR_OWN_UNKNOWN’ undeclared (first use in this function)
 #define XFS_FMR_OWN_UNKNOWN FMR_OWN_UNKNOWN   /* unknown owner */
                             ^
fsmap.c:63:7: note: in expansion of macro ‘XFS_FMR_OWN_UNKNOWN’
  case XFS_FMR_OWN_UNKNOWN:
       ^
fsmap.c:65:2: warning: implicit declaration of function ‘FMR_OWNER’ [-Wimplicit-function-declaration]
  case XFS_FMR_OWN_FS:
  ^
...

Thanks,
Eryu