* ltmain.in <startup, shell wrapper>: Add _AS_BOURNE_COMPATIBLE
	code from Autoconf, to fix issues with zsh and other shells.
	Reported by David Gómez Espinosa <address@hidden>.

Index: ltmain.in
===================================================================
RCS file: /cvsroot/libtool/libtool/Attic/ltmain.in,v
retrieving revision 1.334.2.121
diff -u -r1.334.2.121 ltmain.in
--- ltmain.in	5 Feb 2006 11:08:52 -0000	1.334.2.121
+++ ltmain.in	13 Feb 2006 14:35:05 -0000
@@ -46,11 +46,19 @@
 address@hidden@
 TIMESTAMP="@TIMESTAMP@"
 
-# See if we are running on zsh, and set the options which allow our
-# commands through without removal of \ escapes.
-if test -n "${ZSH_VERSION+set}" ; then
+# Be Bourne compatible (taken from Autoconf:_AS_BOURNE_COMPATIBLE).
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
   setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
 fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
 
 # Check that we have a working $echo.
 if test "X$1" = X--no-reexec; then
@@ -5271,6 +5279,20 @@
 Xsed='${SED} -e 1s/^X//'
 sed_quote_subst='$sed_quote_subst'
 
+# Be Bourne compatible (taken from Autoconf:_AS_BOURNE_COMPATIBLE).
+if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on \${1+\"address@hidden"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"address@hidden"}'='\"address@hidden"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
 # The HP-UX ksh and POSIX shell print the target directory to stdout
 # if CDPATH is set.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH