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dnl #
dnl # Set the flags used for sed in-place edits.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_SED], [
AC_REQUIRE([AC_PROG_SED])dnl
AC_CACHE_CHECK([for sed --in-place], [ac_cv_inplace], [
tmpfile=$(mktemp conftest.XXX)
echo foo >$tmpfile
AS_IF([$SED --in-place 's#foo#bar#' $tmpfile 2>/dev/null],
[ac_cv_inplace="--in-place"],
[$SED -i '' 's#foo#bar#' $tmpfile 2>/dev/null],
[ac_cv_inplace="-i ''"],
[AC_MSG_ERROR([$SED does not support in-place])])
])
AC_SUBST([ac_inplace], [$ac_cv_inplace])
])
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