---- autoconf-2.69/tests/foreign.at.orig 2012-03-07 18:35:26.000000000 +0100
-+++ autoconf-2.69/tests/foreign.at 2017-01-31 16:34:36.105261591 +0100
-@@ -57,7 +57,7 @@
- # Make sure at-path contains something valid, and let the test suite
- # display it when verbose. And fail, skipping would too easily hide
- # problems.
--AT_CHECK([sed -n ["s,^.*\`\\(/[^']*\\)'.*,\\1,p"] stdout], [0], [stdout])
-+AT_CHECK([sed -n ["s,^.*[\`']\\(/[^']*\\)'.*,\\1,p"] stdout], [0], [stdout])
- AT_CHECK([test -f "`sed -n 1p stdout`"])
-
- # Older libtoolize installed everything but install-sh...
+--- autoconf-2.69/tests/m4sh.at.orig 2012-03-07 18:35:26.000000000 +0100
++++ autoconf-2.69/tests/m4sh.at 2017-01-31 21:50:56.350739217 +0100
+@@ -237,7 +237,7 @@
+ [[AS@&t@_INIT
+ m4@&t@_divert_text([], [
+ if $2; then
+- AS@&t@_UNSET([LINENO])
++ { LINENO=0; unset LINENO;}
+ fi
+ ])
+ AS@&t@_LINENO_PREPARE