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This value is used to determine CONFIG_SHELL and SHELL which may get exported into
scripts shared via sstate onto other systems.

Some systems have /bin/sh -> dash and others /bin/sh -> bash. Bash is preferred 
but sometimes we can sometimes end up exporting /bin/sh yet use bashisms.

This patch puts bash first in the search results which avoids the bash/dash confusion.

RP 2012/9/23

Upstream-Status: Inappropriate [OE specific configuration]

Index: autoconf-2.69/lib/m4sugar/m4sh.m4
===================================================================
--- autoconf-2.69.orig/lib/m4sugar/m4sh.m4	2012-03-07 17:35:26.000000000 +0000
+++ autoconf-2.69/lib/m4sugar/m4sh.m4	2013-09-23 16:12:38.853597515 +0000
@@ -229,7 +229,7 @@
     [_AS_PATH_WALK([/bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH],
       [case $as_dir in @%:@(
 	 /*)
-	   for as_base in sh bash ksh sh5; do
+	   for as_base in bash sh ksh sh5; do
 	     # Try only shells that exist, to save several forks.
 	     as_shell=$as_dir/$as_base
 	     AS_IF([{ test -f "$as_shell" || test -f "$as_shell.exe"; } &&
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