# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1217874818 14400
# Node ID bc2ead6b4d6c147c7c24c1de0229b7c98a558c3f
# Parent  8d0795fedf4a45cc15c6c769f4be104c731426e1
aclocal.m4 (OCTAVE_PROG_SED): fail if no usable sed is found

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2008-08-04  John W. Eaton  <jwe@octave.org>
 
+	* aclocal.m4: Fail if no usable version of sed is found.
+
 	* Makefile.in (header-msg): Mention GNU Make requirement.
 	Update GCC version info.
 
diff --git a/aclocal.m4 b/aclocal.m4
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -885,6 +885,9 @@
     rm -rf "$tmp"
   ])
   SED=$octave_cv_path_sed
+  if test -z "$SED"; then
+    AC_MSG_ERROR([no usable version of sed found])
+  fi
 fi
 AC_SUBST(SED)
 AC_MSG_RESULT([$SED])