$NetBSD: patch-configure,v 1.1 2015/12/08 11:02:25 jperkin Exp $

Use $as_echo to ensure \1 etc are supported.

--- configure.orig	2013-11-11 04:41:53.000000000 +0000
+++ configure
@@ -19087,23 +19087,23 @@ $as_echo X/* automatically generated */
 	    q
 	  }
 	  s/.*/./; q'
-    echo '#ifndef '$ac_prefix_conf_DEF >$ac_prefix_conf_OUT
-    echo '#define '$ac_prefix_conf_DEF' 1' >>$ac_prefix_conf_OUT
-    echo ' ' >>$ac_prefix_conf_OUT
-    echo /'*' $ac_prefix_conf_OUT. Generated automatically at end of configure. '*'/ >>$ac_prefix_conf_OUT
+    $as_echo '#ifndef '$ac_prefix_conf_DEF >$ac_prefix_conf_OUT
+    $as_echo '#define '$ac_prefix_conf_DEF' 1' >>$ac_prefix_conf_OUT
+    $as_echo ' ' >>$ac_prefix_conf_OUT
+    $as_echo /'*' $ac_prefix_conf_OUT. Generated automatically at end of configure. '*'/ >>$ac_prefix_conf_OUT
 
-    echo 's/#undef  *\([A-Z_]\)/#undef '$ac_prefix_conf_UPP'_\1/' >conftest.sed
-    echo 's/#undef  *\([a-z]\)/#undef '$ac_prefix_conf_LOW'_\1/' >>conftest.sed
-    echo 's/#define  *\([A-Z_][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_UPP"_\\1 \\" >>conftest.sed
-    echo '#define '$ac_prefix_conf_UPP"_\\1 \\2 \\" >>conftest.sed
-    echo '#endif/' >>conftest.sed
-    echo 's/#define  *\([a-z][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_LOW"_\\1 \\" >>conftest.sed
-    echo '#define '$ac_prefix_conf_LOW"_\\1 \\2 \\" >>conftest.sed
-    echo '#endif/' >>conftest.sed
+    $as_echo 's/#undef  *\([A-Z_]\)/#undef '$ac_prefix_conf_UPP'_\1/' >conftest.sed
+    $as_echo 's/#undef  *\([a-z]\)/#undef '$ac_prefix_conf_LOW'_\1/' >>conftest.sed
+    $as_echo 's/#define  *\([A-Z_][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_UPP"_\\1 \\" >>conftest.sed
+    $as_echo '#define '$ac_prefix_conf_UPP"_\\1 \\2 \\" >>conftest.sed
+    $as_echo '#endif/' >>conftest.sed
+    $as_echo 's/#define  *\([a-z][A-Za-z0-9_]*\)\(.*\)/#ifndef '$ac_prefix_conf_LOW"_\\1 \\" >>conftest.sed
+    $as_echo '#define '$ac_prefix_conf_LOW"_\\1 \\2 \\" >>conftest.sed
+    $as_echo '#endif/' >>conftest.sed
     sed -f conftest.sed $ac_prefix_conf_INP >>$ac_prefix_conf_OUT
-    echo ' ' >>$ac_prefix_conf_OUT
-    echo '/*' $ac_prefix_conf_DEF '*/' >>$ac_prefix_conf_OUT
-    echo '#endif' >>$ac_prefix_conf_OUT
+    $as_echo ' ' >>$ac_prefix_conf_OUT
+    $as_echo '/*' $ac_prefix_conf_DEF '*/' >>$ac_prefix_conf_OUT
+    $as_echo '#endif' >>$ac_prefix_conf_OUT
   else
     as_fn_error $? "input file $ac_prefix_conf_IN does not exist,     skip generating $ac_prefix_conf_OUT" "$LINENO" 5
   fi