- Ditch the header, replace it with $HEADER$ (to be filled in later)

- Add LAM_UNIQ m4 macro

This commit was SVN r31.

config/lam_functions.m4

@@ -1,13 +1,8 @@
 dnl -*- shell-script -*-
 dnl
-dnl Copyright (c) 2003 The Trustees of Indiana University.  
-dnl                    All rights reserved.
-dnl 
-dnl This file is part of the LAM software package.  For license
-dnl information, see the LICENSE file in the top level directory of the
-dnl LAM source distribution.
+dnl $HEADER$
 dnl
-dnl $Id: lam_functions.m4,v 1.1 2003/12/22 16:29:11 twoodall Exp $
+dnl $Id: lam_functions.m4,v 1.2 2004/01/07 07:46:37 jsquyres Exp $
 dnl
 
 AC_DEFUN(LAM_CONFIGURE_SETUP,[
@@ -47,3 +42,76 @@ LAM_CONFIGURE_DATE="`date`"
 
 CLEANFILES="*~ .\#*"
 AC_SUBST(CLEANFILES)])dnl
+
+dnl #######################################################################
+
+AC_DEFUN(LAM_UNIQ,[
+# 1 is the variable name to be uniq-ized
+lam_name=$1
+
+# Go through each item in the variable and only keep the unique ones
+
+lam_count=0
+for val in ${$1}; do
+    lam_done=0
+    lam_i=1
+    lam_found=0
+
+    # Loop over every token we've seen so far
+
+    lam_done="`expr $lam_i \> $lam_count`"
+    while test "$lam_found" = "0" -a "$lam_done" = "0"; do
+
+	# Have we seen this token already?  Prefix the comparison with
+	# "x" so that "-Lfoo" values won't be cause an error.
+
+	lam_eval="expr x$val = x\$lam_array_$lam_i"
+	lam_found=`eval $lam_eval`
+
+	# Check the ending condition
+
+	lam_done="`expr $lam_i \>= $lam_count`"
+
+	# Increment the counter
+
+	lam_i="`expr $lam_i + 1`"
+    done
+
+    # If we didn't find the token, add it to the "array"
+
+    if test "$lam_found" = "0"; then
+	lam_eval="lam_array_$lam_i=$val"
+	eval $lam_eval
+	lam_count="`expr $lam_count + 1`"
+    else
+	lam_i="`expr $lam_i - 1`"
+    fi
+done
+
+# Take all the items in the "array" and assemble them back into a
+# single variable
+
+lam_i=1
+lam_done="`expr $lam_i \> $lam_count`"
+lam_newval=
+while test "$lam_done" = "0"; do
+    lam_eval="lam_newval=\"$lam_newval \$lam_array_$lam_i\""
+    eval $lam_eval
+
+    lam_eval="unset lam_array_$lam_i"
+    eval $lam_eval
+
+    lam_done="`expr $lam_i \>= $lam_count`"
+    lam_i="`expr $lam_i + 1`"
+done
+
+# Done; do the assignment
+
+lam_newval="`echo $lam_newval`"
+lam_eval="$lam_name=\"$lam_newval\""
+eval $lam_eval
+
+# Clean up
+
+unset lam_name lam_i lam_done lam_newval lam_eval lam_count])dnl
+