mirror_zfs/config/always-sed.m4

dnl #
dnl # Set the flags used for sed in-place edits.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_SED], [
	ac_inplace=""
	AC_CACHE_CHECK([for sed --in-place], [ac_cv_path_SED],
		[AC_PATH_PROGS_FEATURE_CHECK([SED], [sed],
			[[tmpfile=$(mktemp)
			  echo foo > $tmpfile
			  $ac_path_SED --in-place 's#foo#bar#' $tmpfile \
			  && ac_cv_path_SED=$ac_path_SED
			  rm $tmpfile]],
			[ac_inplace="-i ''"])])
	AS_IF([test "x$ac_inplace" = "x"], [ac_inplace="--in-place"])
	AC_SUBST([ac_inplace])
])
Detect if sed supports --in-place Not all versions of sed have the --in-place flag. Detect support for the flag during ./configure and provide a fallback mechanism for those systems where sed's behavior differs. The autoconf variable ${ac_inplace} can be used to choose the correct flags for editing a file in place with sed. Replace violating usages in Makefile.am with ${ac_inplace}. Reviewed-by: Chris Dunlop <chris@onthe.net.au> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ryan Moeller <ryan@ixsystems.com> Closes #9463 2019-10-17 05:19:48 +03:00			`dnl #`
			`dnl # Set the flags used for sed in-place edits.`
			`dnl #`
			`AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_SED], [`
			`ac_inplace=""`
			`AC_CACHE_CHECK([for sed --in-place], [ac_cv_path_SED],`
			`[AC_PATH_PROGS_FEATURE_CHECK([SED], [sed],`
			`[[tmpfile=$(mktemp)`
			`echo foo > $tmpfile`
			`$ac_path_SED --in-place 's#foo#bar#' $tmpfile \`
			`&& ac_cv_path_SED=$ac_path_SED`
			`rm $tmpfile]],`
			`[ac_inplace="-i ''"])])`
			`AS_IF([test "x$ac_inplace" = "x"], [ac_inplace="--in-place"])`
			`AC_SUBST([ac_inplace])`
			`])`