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-rw-r--r--configure.in3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index 6d86b68a8b..4e44f1ed45 100644
--- a/configure.in
+++ b/configure.in
@@ -512,6 +512,9 @@ AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
   [GNU texinfo.* \([0-9][0-9.]*\)],
   [3.1[1-9] | 3.[2-9][0-9] | 4.* | 1.6[89] | 1.7[0-9]], MAKEINFO=: aux_missing=t)
+AC_CHECK_PROG_VER(SED, gsed sed, --version,
+  [GNU sed version \([0-9]*\.[0-9.]*\)],
+  [3.02], SED=: aux_missing=t)
 
 if test -n "$critic_missing"; then
 AC_MSG_ERROR([