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dnl #
dnl # Check for libdevmapper. libdevmapper is optional for building, but
dnl # required for auto-online/auto-replace functionality for DM/multipath
dnl # disks.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_USER_LIBDEVMAPPER], [
AC_CHECK_HEADER([libdevmapper.h], [
AC_SUBST([LIBDEVMAPPER], ["-ldevmapper"])
AC_DEFINE([HAVE_LIBDEVMAPPER], 1, [Define if you have libdevmapper])
user_libdevmapper=yes
], [
user_libdevmapper=no
])
])
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