+AC_CHECK_HEADERS([ \
+ ctype.h \
+ fs_info.h \
+ fshelp.h \
+ grp.h \
+ kvm.h \
+ limits.h \
+ locale.h \
+ mntent.h \
+ mnttab.h \
+ paths.h \
+ pwd.h \
+ sys/fs_types.h \
+ sys/fstyp.h \
+ sys/mntent.h \
+ sys/mnttab.h \
+ sys/statfs.h \
+ sys/statvfs.h \
+ sys/un.h \
+ sys/vfs.h \
+ sys/vfstab.h \
+ sys/vmmeter.h \
+ wordexp.h \
+])
+
+AC_CHECK_HEADERS([xfs/xqm.h], [], [],
+[
+#define _GNU_SOURCE
+])